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
  60 /* supported controls */
  61 static struct v4l2_queryctrl tm6000_qctrl[] = {
  62         {
  63                 .id            = V4L2_CID_BRIGHTNESS,
  64                 .type          = V4L2_CTRL_TYPE_INTEGER,
  65                 .name          = "Brightness",
  66                 .minimum       = 0,
  67                 .maximum       = 255,
  68                 .step          = 1,
  69                 .default_value = 54,
  70                 .flags         = 0,
  71         }, {
  72                 .id            = V4L2_CID_CONTRAST,
  73                 .type          = V4L2_CTRL_TYPE_INTEGER,
  74                 .name          = "Contrast",
  75                 .minimum       = 0,
  76                 .maximum       = 255,
  77                 .step          = 0x1,
  78                 .default_value = 119,
  79                 .flags         = 0,
  80         }, {
  81                 .id            = V4L2_CID_SATURATION,
  82                 .type          = V4L2_CTRL_TYPE_INTEGER,
  83                 .name          = "Saturation",
  84                 .minimum       = 0,
  85                 .maximum       = 255,
  86                 .step          = 0x1,
  87                 .default_value = 112,
  88                 .flags         = 0,
  89         }, {
  90                 .id            = V4L2_CID_HUE,
  91                 .type          = V4L2_CTRL_TYPE_INTEGER,
  92                 .name          = "Hue",
  93                 .minimum       = -128,
  94                 .maximum       = 127,
  95                 .step          = 0x1,
  96                 .default_value = 0,
  97                 .flags         = 0,
  98         }
  99 };
 100
 101 static int qctl_regs[ARRAY_SIZE(tm6000_qctrl)];
 102
 103 static struct tm6000_fmt format[] = {
 104         {
 105                 .name     = "4:2:2, packed, YVY2",
 106                 .fourcc   = V4L2_PIX_FMT_YUYV,
 107                 .depth    = 16,
 108         }, {
 109                 .name     = "4:2:2, packed, UYVY",
 110                 .fourcc   = V4L2_PIX_FMT_UYVY,
 111                 .depth    = 16,
 112         }, {
 113                 .name     = "A/V + VBI mux packet",
 114                 .fourcc   = V4L2_PIX_FMT_TM6000,
 115                 .depth    = 16,
 116         }
 117 };
 118
 119 /* ------------------------------------------------------------------
 120         DMA and thread functions
 121    ------------------------------------------------------------------*/
 122
 123 #define norm_maxw(a) 720
 124 #define norm_maxh(a) 576
 125
 126 #define norm_minw(a) norm_maxw(a)
 127 #define norm_minh(a) norm_maxh(a)
 128
 129 /*
 130  * video-buf generic routine to get the next available buffer
 131  */
 132 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
 133                                struct tm6000_buffer   **buf)
 134 {
 135         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 136         char *outp;
 137
 138         if (list_empty(&dma_q->active)) {
 139                 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
 140                 *buf = NULL;
 141                 return;
 142         }
 143
 144         *buf = list_entry(dma_q->active.next,
 145                         struct tm6000_buffer, vb.queue);
 146
 147         if (!buf)
 148                 return;
 149
 150         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 151         outp = videobuf_to_vmalloc(&(*buf)->vb);
 152 //      if (outp)
 153 //              memset(outp, 0, (*buf)->vb.size);
 154
 155         return;
 156 }
 157
 158 /*
 159  * Announces that a buffer were filled and request the next
 160  */
 161 static inline void buffer_filled(struct tm6000_core *dev,
 162                                  struct tm6000_dmaqueue *dma_q,
 163                                  struct tm6000_buffer *buf)
 164 {
 165         /* Advice that buffer was filled */
 166         dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
 167         buf->vb.state = VIDEOBUF_DONE;
 168         buf->vb.field_count++;
 169         do_gettimeofday(&buf->vb.ts);
 170
 171         list_del(&buf->vb.queue);
 172         wake_up(&buf->vb.done);
 173 }
 174
 175 const char *tm6000_msg_type[] = {
 176         "unknown(0)",   /* 0 */
 177         "video",        /* 1 */
 178         "audio",        /* 2 */
 179         "vbi",          /* 3 */
 180         "pts",          /* 4 */
 181         "err",          /* 5 */
 182         "unknown(6)",   /* 6 */
 183         "unknown(7)",   /* 7 */
 184 };
 185
 186 /*
 187  * Identify the tm5600/6000 buffer header type and properly handles
 188  */
 189 static int copy_packet(struct urb *urb, u32 header, u8 **ptr, u8 *endp,
 190                         u8 *out_p, struct tm6000_buffer **buf)
 191 {
 192         struct tm6000_dmaqueue  *dma_q = urb->context;
 193         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 194         u8 c;
 195         unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
 196         int rc = 0;
 197         /* FIXME: move to tm6000-isoc */
 198         static int last_line = -2, start_line = -2, last_field = -2;
 199
 200         /* FIXME: this is the hardcoded window size
 201          */
 202         unsigned int linewidth = (*buf)->vb.width << 1;
 203
 204         if (!dev->isoc_ctl.cmd) {
 205                 c = (header >> 24) & 0xff;
 206
 207                 /* split the header fields */
 208                 size  = ((header & 0x7e) << 1);
 209
 210                 if (size > 0)
 211                         size -= 4;
 212
 213                 block = (header >> 7) & 0xf;
 214                 field = (header >> 11) & 0x1;
 215                 line  = (header >> 12) & 0x1ff;
 216                 cmd   = (header >> 21) & 0x7;
 217
 218                 /* Validates header fields */
 219                 if(size > TM6000_URB_MSG_LEN)
 220                         size = TM6000_URB_MSG_LEN;
 221
 222                 if (cmd == TM6000_URB_MSG_VIDEO) {
 223                         if ((block+1)*TM6000_URB_MSG_LEN>linewidth)
 224                                 cmd = TM6000_URB_MSG_ERR;
 225
 226                         /* FIXME: Mounts the image as field0+field1
 227                          * It should, instead, check if the user selected
 228                          * entrelaced or non-entrelaced mode
 229                          */
 230                         pos = ((line << 1) - field - 1) * linewidth +
 231                                 block * TM6000_URB_MSG_LEN;
 232
 233                         /* Don't allow to write out of the buffer */
 234                         if (pos+TM6000_URB_MSG_LEN > (*buf)->vb.size) {
 235                                 dprintk(dev, V4L2_DEBUG_ISOC,
 236                                         "ERR: size=%d, num=%d, line=%d, "
 237                                         "field=%d\n",
 238                                         size, block, line, field);
 239
 240                                 cmd = TM6000_URB_MSG_ERR;
 241                         }
 242                 } else {
 243                         pos=0;
 244                 }
 245
 246                 /* Prints debug info */
 247                 dprintk(dev, V4L2_DEBUG_ISOC, "size=%d, num=%d, "
 248                                 " line=%d, field=%d\n",
 249                                 size, block, line, field);
 250
 251                 if ((last_line!=line)&&(last_line+1!=line) &&
 252                     (cmd != TM6000_URB_MSG_ERR) )  {
 253                         if (cmd != TM6000_URB_MSG_VIDEO)  {
 254                                 dprintk(dev, V4L2_DEBUG_ISOC,  "cmd=%d, "
 255                                         "size=%d, num=%d, line=%d, field=%d\n",
 256                                         cmd, size, block, line, field);
 257                         }
 258                         if (start_line<0)
 259                                 start_line=last_line;
 260                         /* Prints debug info */
 261                         dprintk(dev, V4L2_DEBUG_ISOC, "lines= %d-%d, "
 262                                         "field=%d\n",
 263                                         start_line, last_line, field);
 264
 265                         if ((start_line<6 && last_line>200) &&
 266                                 (last_field != field) ) {
 267
 268                                 dev->isoc_ctl.nfields++;
 269                                 if (dev->isoc_ctl.nfields>=2) {
 270                                         dev->isoc_ctl.nfields=0;
 271
 272                                         /* Announces that a new buffer were filled */
 273                                         buffer_filled (dev, dma_q, *buf);
 274                                         dprintk(dev, V4L2_DEBUG_ISOC,
 275                                                         "new buffer filled\n");
 276                                         get_next_buf (dma_q, buf);
 277                                         if (!*buf)
 278                                                 return rc;
 279                                         out_p = videobuf_to_vmalloc(&((*buf)->vb));
 280                                         if (!out_p)
 281                                                 return rc;
 282
 283                                         pos = dev->isoc_ctl.pos = 0;
 284                                 }
 285                         }
 286
 287                         start_line=line;
 288                         last_field=field;
 289                 }
 290                 if (cmd == TM6000_URB_MSG_VIDEO)
 291                         last_line = line;
 292
 293                 pktsize = TM6000_URB_MSG_LEN;
 294         } else {
 295                 /* Continue the last copy */
 296                 cmd = dev->isoc_ctl.cmd;
 297                 size= dev->isoc_ctl.size;
 298                 pos = dev->isoc_ctl.pos;
 299                 pktsize = dev->isoc_ctl.pktsize;
 300         }
 301
 302         cpysize = (endp-(*ptr) > size) ? size : endp - *ptr;
 303
 304         if (cpysize) {
 305                 /* handles each different URB message */
 306                 switch(cmd) {
 307                 case TM6000_URB_MSG_VIDEO:
 308                         /* Fills video buffer */
 309                         memcpy(&out_p[pos], *ptr, cpysize);
 310                         break;
 311                 case TM6000_URB_MSG_PTS:
 312                         break;
 313                 case TM6000_URB_MSG_AUDIO:
 314                         /* Need some code to process audio */
 315                         printk ("%ld: cmd=%s, size=%d\n", jiffies,
 316                                 tm6000_msg_type[cmd],size);
 317                         break;
 318                 case TM6000_URB_MSG_VBI:
 319                         break;
 320                 default:
 321                         dprintk (dev, V4L2_DEBUG_ISOC, "cmd=%s, size=%d\n",
 322                                                 tm6000_msg_type[cmd],size);
 323                 }
 324         }
 325         if (cpysize<size) {
 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-cpysize;
 333                 (*ptr)+=cpysize;
 334         } else {
 335                 dev->isoc_ctl.cmd = 0;
 336                 (*ptr)+=pktsize;
 337         }
 338
 339         return rc;
 340 }
 341
 342 static int copy_streams(u8 *data, unsigned long len,
 343                         struct urb *urb)
 344 {
 345         struct tm6000_dmaqueue  *dma_q = urb->context;
 346         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 347         u8 *ptr=data, *endp=data+len;
 348         unsigned long header=0;
 349         int rc=0;
 350         struct tm6000_buffer *buf;
 351         char *outp = NULL;
 352
 353         get_next_buf(dma_q, &buf);
 354         if (buf)
 355                 outp = videobuf_to_vmalloc(&buf->vb);
 356
 357         if (!outp)
 358                 return 0;
 359
 360         for (ptr=data; ptr<endp;) {
 361                 if (!dev->isoc_ctl.cmd) {
 362                         u8 *p=(u8 *)&dev->isoc_ctl.tmp_buf;
 363                         /* FIXME: This seems very complex
 364                          * It just recovers up to 3 bytes of the header that
 365                          * might be at the previous packet
 366                          */
 367                         if (dev->isoc_ctl.tmp_buf_len) {
 368                                 while (dev->isoc_ctl.tmp_buf_len) {
 369                                         if ( *(ptr+3-dev->isoc_ctl.tmp_buf_len) == 0x47) {
 370                                                 break;
 371                                         }
 372                                         p++;
 373                                         dev->isoc_ctl.tmp_buf_len--;
 374                                 }
 375                                 if (dev->isoc_ctl.tmp_buf_len) {
 376                                         memcpy(&header, p,
 377                                                 dev->isoc_ctl.tmp_buf_len);
 378                                         memcpy((u8 *)&header +
 379                                                 dev->isoc_ctl.tmp_buf_len,
 380                                                 ptr,
 381                                                 4 - dev->isoc_ctl.tmp_buf_len);
 382                                         ptr += 4 - dev->isoc_ctl.tmp_buf_len;
 383                                         goto HEADER;
 384                                 }
 385                         }
 386                         /* Seek for sync */
 387                         for (;ptr<endp-3;ptr++) {
 388                                 if (*(ptr+3)==0x47)
 389                                         break;
 390                         }
 391
 392                         if (ptr+3>=endp) {
 393                                 dev->isoc_ctl.tmp_buf_len=endp-ptr;
 394                                 memcpy (&dev->isoc_ctl.tmp_buf,ptr,
 395                                         dev->isoc_ctl.tmp_buf_len);
 396                                 dev->isoc_ctl.cmd=0;
 397                                 return rc;
 398                         }
 399
 400                         /* Get message header */
 401                         header=*(unsigned long *)ptr;
 402                         ptr+=4;
 403                 }
 404 HEADER:
 405                 /* Copy or continue last copy */
 406                 rc=copy_packet(urb,header,&ptr,endp,outp,&buf);
 407                 if (rc<0) {
 408                         buf=NULL;
 409                         printk(KERN_ERR "tm6000: buffer underrun at %ld\n",
 410                                         jiffies);
 411                         return rc;
 412                 }
 413                 if (!buf)
 414                         return 0;
 415         }
 416
 417         return 0;
 418 }
 419 /*
 420  * Identify the tm5600/6000 buffer header type and properly handles
 421  */
 422 static int copy_multiplexed(u8 *ptr, unsigned long len,
 423                         struct urb *urb)
 424 {
 425         struct tm6000_dmaqueue  *dma_q = urb->context;
 426         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 427         unsigned int pos=dev->isoc_ctl.pos,cpysize;
 428         int rc=1;
 429         struct tm6000_buffer *buf;
 430         char *outp = NULL;
 431
 432         get_next_buf(dma_q, &buf);
 433         if (buf)
 434                 outp = videobuf_to_vmalloc(&buf->vb);
 435
 436         if (!outp)
 437                 return 0;
 438
 439         while (len>0) {
 440                 cpysize=min(len,buf->vb.size-pos);
 441                 //printk("Copying %d bytes (max=%lu) from %p to %p[%u]\n",cpysize,(*buf)->vb.size,ptr,out_p,pos);
 442                 memcpy(&outp[pos], ptr, cpysize);
 443                 pos+=cpysize;
 444                 ptr+=cpysize;
 445                 len-=cpysize;
 446                 if (pos >= buf->vb.size) {
 447                         pos=0;
 448                         /* Announces that a new buffer were filled */
 449                         buffer_filled (dev, dma_q, buf);
 450                         dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
 451                         get_next_buf (dma_q, &buf);
 452                         if (!buf)
 453                                 break;
 454                         outp = videobuf_to_vmalloc(&(buf->vb));
 455                         if (!outp)
 456                                 return rc;
 457                         pos = 0;
 458                 }
 459         }
 460
 461         dev->isoc_ctl.pos=pos;
 462         return rc;
 463 }
 464
 465 static void inline print_err_status (struct tm6000_core *dev,
 466                                      int packet, int status)
 467 {
 468         char *errmsg = "Unknown";
 469
 470         switch(status) {
 471         case -ENOENT:
 472                 errmsg = "unlinked synchronuously";
 473                 break;
 474         case -ECONNRESET:
 475                 errmsg = "unlinked asynchronuously";
 476                 break;
 477         case -ENOSR:
 478                 errmsg = "Buffer error (overrun)";
 479                 break;
 480         case -EPIPE:
 481                 errmsg = "Stalled (device not responding)";
 482                 break;
 483         case -EOVERFLOW:
 484                 errmsg = "Babble (bad cable?)";
 485                 break;
 486         case -EPROTO:
 487                 errmsg = "Bit-stuff error (bad cable?)";
 488                 break;
 489         case -EILSEQ:
 490                 errmsg = "CRC/Timeout (could be anything)";
 491                 break;
 492         case -ETIME:
 493                 errmsg = "Device does not respond";
 494                 break;
 495         }
 496         if (packet<0) {
 497                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
 498                         status, errmsg);
 499         } else {
 500                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
 501                         packet, status, errmsg);
 502         }
 503 }
 504
 505
 506 /*
 507  * Controls the isoc copy of each urb packet
 508  */
 509 static inline int tm6000_isoc_copy(struct urb *urb)
 510 {
 511         struct tm6000_dmaqueue  *dma_q = urb->context;
 512         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 513         struct tm6000_buffer *buf;
 514         int i, len=0, rc=1, status;
 515         char *p;
 516
 517         if (urb->status < 0) {
 518                 print_err_status (dev, -1, urb->status);
 519                 return 0;
 520         }
 521
 522         for (i = 0; i < urb->number_of_packets; i++) {
 523                 status = urb->iso_frame_desc[i].status;
 524
 525                 if (status<0) {
 526                         print_err_status (dev,i,status);
 527                         continue;
 528                 }
 529
 530                 len = urb->iso_frame_desc[i].actual_length;
 531
 532                 if (len > 0) {
 533                         p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 534                         if (!urb->iso_frame_desc[i].status) {
 535                                 if ((dev->fourcc)==V4L2_PIX_FMT_TM6000) {
 536                                         rc=copy_multiplexed(p, len, urb);
 537                                         if (rc<=0)
 538                                                 return rc;
 539                                 } else {
 540                                         copy_streams(p, len, urb);
 541                                 }
 542                         }
 543                 }
 544         }
 545         return rc;
 546 }
 547
 548 /* ------------------------------------------------------------------
 549         URB control
 550    ------------------------------------------------------------------*/
 551
 552 /*
 553  * IRQ callback, called by URB callback
 554  */
 555 static void tm6000_irq_callback(struct urb *urb)
 556 {
 557         struct tm6000_dmaqueue  *dma_q = urb->context;
 558         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 559         int i;
 560
 561         if (!dev)
 562                 return;
 563
 564         spin_lock(&dev->slock);
 565         tm6000_isoc_copy(urb);
 566         spin_unlock(&dev->slock);
 567
 568         /* Reset urb buffers */
 569         for (i = 0; i < urb->number_of_packets; i++) {
 570                 urb->iso_frame_desc[i].status = 0;
 571                 urb->iso_frame_desc[i].actual_length = 0;
 572         }
 573
 574         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 575         if (urb->status)
 576                 tm6000_err("urb resubmit failed (error=%i)\n",
 577                         urb->status);
 578 }
 579
 580 /*
 581  * Stop and Deallocate URBs
 582  */
 583 static void tm6000_uninit_isoc(struct tm6000_core *dev)
 584 {
 585         struct urb *urb;
 586         int i;
 587
 588         dev->isoc_ctl.nfields = -1;
 589         dev->isoc_ctl.buf = NULL;
 590         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 591                 urb=dev->isoc_ctl.urb[i];
 592                 if (urb) {
 593                         usb_kill_urb(urb);
 594                         usb_unlink_urb(urb);
 595                         if (dev->isoc_ctl.transfer_buffer[i]) {
 596                                 usb_free_coherent(dev->udev,
 597                                                 urb->transfer_buffer_length,
 598                                                 dev->isoc_ctl.transfer_buffer[i],
 599                                                 urb->transfer_dma);
 600                         }
 601                         usb_free_urb(urb);
 602                         dev->isoc_ctl.urb[i] = NULL;
 603                 }
 604                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 605         }
 606
 607         kfree (dev->isoc_ctl.urb);
 608         kfree (dev->isoc_ctl.transfer_buffer);
 609
 610         dev->isoc_ctl.urb=NULL;
 611         dev->isoc_ctl.transfer_buffer=NULL;
 612         dev->isoc_ctl.num_bufs = 0;
 613
 614         dev->isoc_ctl.num_bufs=0;
 615 }
 616
 617 /*
 618  * Allocate URBs and start IRQ
 619  */
 620 static int tm6000_prepare_isoc(struct tm6000_core *dev, unsigned int framesize)
 621 {
 622         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 623         int i, j, sb_size, pipe, size, max_packets, num_bufs = 8;
 624         struct urb *urb;
 625
 626         /* De-allocates all pending stuff */
 627         tm6000_uninit_isoc(dev);
 628
 629         usb_set_interface(dev->udev,
 630                           dev->isoc_in.bInterfaceNumber,
 631                           dev->isoc_in.bAlternateSetting);
 632
 633         pipe = usb_rcvisocpipe(dev->udev,
 634                                dev->isoc_in.endp->desc.bEndpointAddress &
 635                                USB_ENDPOINT_NUMBER_MASK);
 636
 637         size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
 638
 639         if (size > dev->isoc_in.maxsize)
 640                 size = dev->isoc_in.maxsize;
 641
 642         dev->isoc_ctl.max_pkt_size = size;
 643
 644         max_packets = ( framesize + size - 1) / size;
 645
 646         if (max_packets > TM6000_MAX_ISO_PACKETS)
 647                 max_packets = TM6000_MAX_ISO_PACKETS;
 648
 649         sb_size = max_packets * size;
 650
 651         dev->isoc_ctl.num_bufs = num_bufs;
 652
 653         dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 654         if (!dev->isoc_ctl.urb) {
 655                 tm6000_err("cannot alloc memory for usb buffers\n");
 656                 return -ENOMEM;
 657         }
 658
 659         dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
 660                                    GFP_KERNEL);
 661         if (!dev->isoc_ctl.transfer_buffer) {
 662                 tm6000_err("cannot allocate memory for usbtransfer\n");
 663                 kfree(dev->isoc_ctl.urb);
 664                 return -ENOMEM;
 665         }
 666
 667         dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
 668                     " (%d bytes) of %d bytes each to handle %u size\n",
 669                     max_packets, num_bufs, sb_size,
 670                     dev->isoc_in.maxsize, size);
 671
 672         /* allocate urbs and transfer buffers */
 673         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 674                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 675                 if (!urb) {
 676                         tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
 677                         tm6000_uninit_isoc(dev);
 678                         usb_free_urb(urb);
 679                         return -ENOMEM;
 680                 }
 681                 dev->isoc_ctl.urb[i] = urb;
 682
 683                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
 684                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 685                 if (!dev->isoc_ctl.transfer_buffer[i]) {
 686                         tm6000_err ("unable to allocate %i bytes for transfer"
 687                                         " buffer %i%s\n",
 688                                         sb_size, i,
 689                                         in_interrupt()?" while in int":"");
 690                         tm6000_uninit_isoc(dev);
 691                         return -ENOMEM;
 692                 }
 693                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
 694
 695                 usb_fill_bulk_urb(urb, dev->udev, pipe,
 696                                   dev->isoc_ctl.transfer_buffer[i], sb_size,
 697                                   tm6000_irq_callback, dma_q);
 698                 urb->interval = dev->isoc_in.endp->desc.bInterval;
 699                 urb->number_of_packets = max_packets;
 700                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 701
 702                 for (j = 0; j < max_packets; j++) {
 703                         urb->iso_frame_desc[j].offset = size * j;
 704                         urb->iso_frame_desc[j].length = size;
 705                 }
 706         }
 707
 708         return 0;
 709 }
 710
 711 static int tm6000_start_thread( struct tm6000_core *dev)
 712 {
 713         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 714         int i;
 715
 716         dma_q->frame=0;
 717         dma_q->ini_jiffies=jiffies;
 718
 719         init_waitqueue_head(&dma_q->wq);
 720
 721         /* submit urbs and enables IRQ */
 722         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 723                 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 724                 if (rc) {
 725                         tm6000_err("submit of urb %i failed (error=%i)\n", i,
 726                                    rc);
 727                         tm6000_uninit_isoc(dev);
 728                         return rc;
 729                 }
 730         }
 731
 732         return 0;
 733 }
 734
 735 /* ------------------------------------------------------------------
 736         Videobuf operations
 737    ------------------------------------------------------------------*/
 738
 739 static int
 740 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 741 {
 742         struct tm6000_fh *fh = vq->priv_data;
 743
 744         *size = fh->fmt->depth * fh->width * fh->height >> 3;
 745         if (0 == *count)
 746                 *count = TM6000_DEF_BUF;
 747
 748         if (*count < TM6000_MIN_BUF) {
 749                 *count=TM6000_MIN_BUF;
 750         }
 751
 752         while (*size * *count > vid_limit * 1024 * 1024)
 753                 (*count)--;
 754
 755         return 0;
 756 }
 757
 758 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
 759 {
 760         struct tm6000_fh *fh = vq->priv_data;
 761         struct tm6000_core   *dev = fh->dev;
 762         unsigned long flags;
 763
 764         if (in_interrupt())
 765                 BUG();
 766
 767         /* We used to wait for the buffer to finish here, but this didn't work
 768            because, as we were keeping the state as VIDEOBUF_QUEUED,
 769            videobuf_queue_cancel marked it as finished for us.
 770            (Also, it could wedge forever if the hardware was misconfigured.)
 771
 772            This should be safe; by the time we get here, the buffer isn't
 773            queued anymore. If we ever start marking the buffers as
 774            VIDEOBUF_ACTIVE, it won't be, though.
 775         */
 776         spin_lock_irqsave(&dev->slock, flags);
 777         if (dev->isoc_ctl.buf == buf)
 778                 dev->isoc_ctl.buf = NULL;
 779         spin_unlock_irqrestore(&dev->slock, flags);
 780
 781         videobuf_vmalloc_free(&buf->vb);
 782         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 783 }
 784
 785 static int
 786 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 787                                                 enum v4l2_field field)
 788 {
 789         struct tm6000_fh     *fh  = vq->priv_data;
 790         struct tm6000_buffer *buf = container_of(vb,struct tm6000_buffer,vb);
 791         struct tm6000_core   *dev = fh->dev;
 792         int rc = 0, urb_init = 0;
 793
 794         BUG_ON(NULL == fh->fmt);
 795
 796
 797         /* FIXME: It assumes depth=2 */
 798         /* The only currently supported format is 16 bits/pixel */
 799         buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
 800         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 801                 return -EINVAL;
 802
 803         if (buf->fmt       != fh->fmt    ||
 804             buf->vb.width  != fh->width  ||
 805             buf->vb.height != fh->height ||
 806             buf->vb.field  != field) {
 807                 buf->fmt       = fh->fmt;
 808                 buf->vb.width  = fh->width;
 809                 buf->vb.height = fh->height;
 810                 buf->vb.field  = field;
 811                 buf->vb.state = VIDEOBUF_NEEDS_INIT;
 812         }
 813
 814         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 815                 if (0 != (rc = videobuf_iolock(vq, &buf->vb, NULL)))
 816                         goto fail;
 817                 urb_init = 1;
 818         }
 819
 820         if (!dev->isoc_ctl.num_bufs)
 821                 urb_init = 1;
 822
 823         if (urb_init) {
 824                 rc = tm6000_prepare_isoc(dev, buf->vb.size);
 825                 if (rc < 0)
 826                         goto fail;
 827
 828                 rc = tm6000_start_thread(dev);
 829                 if (rc < 0)
 830                         goto fail;
 831
 832         }
 833
 834         buf->vb.state = VIDEOBUF_PREPARED;
 835         return 0;
 836
 837 fail:
 838         free_buffer(vq, buf);
 839         return rc;
 840 }
 841
 842 static void
 843 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 844 {
 845         struct tm6000_buffer    *buf     = container_of(vb,struct tm6000_buffer,vb);
 846         struct tm6000_fh        *fh      = vq->priv_data;
 847         struct tm6000_core      *dev     = fh->dev;
 848         struct tm6000_dmaqueue  *vidq    = &dev->vidq;
 849
 850         buf->vb.state = VIDEOBUF_QUEUED;
 851         list_add_tail(&buf->vb.queue, &vidq->active);
 852 }
 853
 854 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 855 {
 856         struct tm6000_buffer   *buf  = container_of(vb,struct tm6000_buffer,vb);
 857
 858         free_buffer(vq,buf);
 859 }
 860
 861 static struct videobuf_queue_ops tm6000_video_qops = {
 862         .buf_setup      = buffer_setup,
 863         .buf_prepare    = buffer_prepare,
 864         .buf_queue      = buffer_queue,
 865         .buf_release    = buffer_release,
 866 };
 867
 868 /* ------------------------------------------------------------------
 869         IOCTL handling
 870    ------------------------------------------------------------------*/
 871
 872 static int res_get(struct tm6000_core *dev, struct tm6000_fh *fh)
 873 {
 874         /* is it free? */
 875         mutex_lock(&dev->lock);
 876         if (dev->resources) {
 877                 /* no, someone else uses it */
 878                 mutex_unlock(&dev->lock);
 879                 return 0;
 880         }
 881         /* it's free, grab it */
 882         dev->resources =1;
 883         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
 884         mutex_unlock(&dev->lock);
 885         return 1;
 886 }
 887
 888 static int res_locked(struct tm6000_core *dev)
 889 {
 890         return (dev->resources);
 891 }
 892
 893 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
 894 {
 895         mutex_lock(&dev->lock);
 896         dev->resources = 0;
 897         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
 898         mutex_unlock(&dev->lock);
 899 }
 900
 901 /* ------------------------------------------------------------------
 902         IOCTL vidioc handling
 903    ------------------------------------------------------------------*/
 904 static int vidioc_querycap (struct file *file, void  *priv,
 905                                         struct v4l2_capability *cap)
 906 {
 907         //      struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 908
 909         strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
 910         strlcpy(cap->card,"Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
 911         //      strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
 912         cap->version = TM6000_VERSION;
 913         cap->capabilities =     V4L2_CAP_VIDEO_CAPTURE |
 914                                 V4L2_CAP_STREAMING     |
 915                                 V4L2_CAP_TUNER         |
 916                                 V4L2_CAP_READWRITE;
 917         return 0;
 918 }
 919
 920 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 921                                         struct v4l2_fmtdesc *f)
 922 {
 923         if (unlikely(f->index >= ARRAY_SIZE(format)))
 924                 return -EINVAL;
 925
 926         strlcpy(f->description,format[f->index].name,sizeof(f->description));
 927         f->pixelformat = format[f->index].fourcc;
 928         return 0;
 929 }
 930
 931 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 932                                         struct v4l2_format *f)
 933 {
 934         struct tm6000_fh  *fh=priv;
 935
 936         f->fmt.pix.width        = fh->width;
 937         f->fmt.pix.height       = fh->height;
 938         f->fmt.pix.field        = fh->vb_vidq.field;
 939         f->fmt.pix.pixelformat  = fh->fmt->fourcc;
 940         f->fmt.pix.bytesperline =
 941                 (f->fmt.pix.width * fh->fmt->depth) >> 3;
 942         f->fmt.pix.sizeimage =
 943                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 944
 945         return (0);
 946 }
 947
 948 static struct tm6000_fmt* format_by_fourcc(unsigned int fourcc)
 949 {
 950         unsigned int i;
 951
 952         for (i = 0; i < ARRAY_SIZE(format); i++)
 953                 if (format[i].fourcc == fourcc)
 954                         return format+i;
 955         return NULL;
 956 }
 957
 958 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
 959                         struct v4l2_format *f)
 960 {
 961         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 962         struct tm6000_fmt *fmt;
 963         enum v4l2_field field;
 964
 965         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 966         if (NULL == fmt) {
 967                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
 968                                 " invalid.\n", f->fmt.pix.pixelformat);
 969                 return -EINVAL;
 970         }
 971
 972         field = f->fmt.pix.field;
 973
 974         if (field == V4L2_FIELD_ANY) {
 975 //              field=V4L2_FIELD_INTERLACED;
 976                 field=V4L2_FIELD_SEQ_TB;
 977         } else if (V4L2_FIELD_INTERLACED != field) {
 978                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
 979                 return -EINVAL;
 980         }
 981
 982         tm6000_get_std_res (dev);
 983
 984         f->fmt.pix.width  = dev->width;
 985         f->fmt.pix.height = dev->height;
 986
 987         f->fmt.pix.width &= ~0x01;
 988
 989         f->fmt.pix.field = field;
 990
 991         f->fmt.pix.bytesperline =
 992                 (f->fmt.pix.width * fmt->depth) >> 3;
 993         f->fmt.pix.sizeimage =
 994                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 995
 996         return 0;
 997 }
 998
 999 /*FIXME: This seems to be generic enough to be at videodev2 */
1000 static int vidioc_s_fmt_vid_cap (struct file *file, void *priv,
1001                                         struct v4l2_format *f)
1002 {
1003         struct tm6000_fh  *fh=priv;
1004         struct tm6000_core *dev = fh->dev;
1005         int ret = vidioc_try_fmt_vid_cap(file,fh,f);
1006         if (ret < 0)
1007                 return (ret);
1008
1009         fh->fmt           = format_by_fourcc(f->fmt.pix.pixelformat);
1010         fh->width         = f->fmt.pix.width;
1011         fh->height        = f->fmt.pix.height;
1012         fh->vb_vidq.field = f->fmt.pix.field;
1013         fh->type          = f->type;
1014
1015         dev->fourcc       = f->fmt.pix.pixelformat;
1016
1017         tm6000_set_fourcc_format(dev);
1018
1019         return (0);
1020 }
1021
1022 static int vidioc_reqbufs (struct file *file, void *priv,
1023                            struct v4l2_requestbuffers *p)
1024 {
1025         struct tm6000_fh  *fh=priv;
1026
1027         return (videobuf_reqbufs(&fh->vb_vidq, p));
1028 }
1029
1030 static int vidioc_querybuf (struct file *file, void *priv,
1031                             struct v4l2_buffer *p)
1032 {
1033         struct tm6000_fh  *fh=priv;
1034
1035         return (videobuf_querybuf(&fh->vb_vidq, p));
1036 }
1037
1038 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *p)
1039 {
1040         struct tm6000_fh  *fh=priv;
1041
1042         return (videobuf_qbuf(&fh->vb_vidq, p));
1043 }
1044
1045 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *p)
1046 {
1047         struct tm6000_fh  *fh=priv;
1048
1049         return (videobuf_dqbuf(&fh->vb_vidq, p,
1050                                 file->f_flags & O_NONBLOCK));
1051 }
1052
1053 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1054 static int vidiocgmbuf (struct file *file, void *priv, struct video_mbuf *mbuf)
1055 {
1056         struct tm6000_fh  *fh=priv;
1057
1058         return videobuf_cgmbuf (&fh->vb_vidq, mbuf, 8);
1059 }
1060 #endif
1061
1062 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1063 {
1064         struct tm6000_fh  *fh=priv;
1065         struct tm6000_core *dev    = fh->dev;
1066
1067         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1068                 return -EINVAL;
1069         if (i != fh->type)
1070                 return -EINVAL;
1071
1072         if (!res_get(dev,fh))
1073                 return -EBUSY;
1074         return (videobuf_streamon(&fh->vb_vidq));
1075 }
1076
1077 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1078 {
1079         struct tm6000_fh  *fh=priv;
1080         struct tm6000_core *dev    = fh->dev;
1081
1082         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1083                 return -EINVAL;
1084         if (i != fh->type)
1085                 return -EINVAL;
1086
1087         videobuf_streamoff(&fh->vb_vidq);
1088         res_free(dev,fh);
1089
1090         return (0);
1091 }
1092
1093 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *norm)
1094 {
1095         int rc=0;
1096         struct tm6000_fh   *fh=priv;
1097         struct tm6000_core *dev = fh->dev;
1098
1099         rc=tm6000_set_standard (dev, norm);
1100
1101         fh->width  = dev->width;
1102         fh->height = dev->height;
1103
1104         if (rc<0)
1105                 return rc;
1106
1107         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1108
1109         return 0;
1110 }
1111
1112 static int vidioc_enum_input (struct file *file, void *priv,
1113                                 struct v4l2_input *inp)
1114 {
1115         switch (inp->index) {
1116         case TM6000_INPUT_TV:
1117                 inp->type = V4L2_INPUT_TYPE_TUNER;
1118                 strcpy(inp->name,"Television");
1119                 break;
1120         case TM6000_INPUT_COMPOSITE:
1121                 inp->type = V4L2_INPUT_TYPE_CAMERA;
1122                 strcpy(inp->name,"Composite");
1123                 break;
1124         case TM6000_INPUT_SVIDEO:
1125                 inp->type = V4L2_INPUT_TYPE_CAMERA;
1126                 strcpy(inp->name,"S-Video");
1127                 break;
1128         default:
1129                 return -EINVAL;
1130         }
1131         inp->std = TM6000_STD;
1132
1133         return 0;
1134 }
1135
1136 static int vidioc_g_input (struct file *file, void *priv, unsigned int *i)
1137 {
1138         struct tm6000_fh   *fh=priv;
1139         struct tm6000_core *dev = fh->dev;
1140
1141         *i=dev->input;
1142
1143         return 0;
1144 }
1145 static int vidioc_s_input (struct file *file, void *priv, unsigned int i)
1146 {
1147         struct tm6000_fh   *fh=priv;
1148         struct tm6000_core *dev = fh->dev;
1149         int rc=0;
1150         char buf[1];
1151
1152         switch (i) {
1153         case TM6000_INPUT_TV:
1154                 dev->input=i;
1155                 *buf=0;
1156                 break;
1157         case TM6000_INPUT_COMPOSITE:
1158         case TM6000_INPUT_SVIDEO:
1159                 dev->input=i;
1160                 *buf=1;
1161                 break;
1162         default:
1163                 return -EINVAL;
1164         }
1165         rc=tm6000_read_write_usb (dev, USB_DIR_OUT | USB_TYPE_VENDOR,
1166                                REQ_03_SET_GET_MCU_PIN, 0x03, 1, buf, 1);
1167
1168         if (!rc) {
1169                 dev->input=i;
1170                 rc=vidioc_s_std (file, priv, &dev->vfd->current_norm);
1171         }
1172
1173         return (rc);
1174 }
1175
1176         /* --- controls ---------------------------------------------- */
1177 static int vidioc_queryctrl (struct file *file, void *priv,
1178                                 struct v4l2_queryctrl *qc)
1179 {
1180         int i;
1181
1182         for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1183                 if (qc->id && qc->id == tm6000_qctrl[i].id) {
1184                         memcpy(qc, &(tm6000_qctrl[i]),
1185                                 sizeof(*qc));
1186                         return (0);
1187                 }
1188
1189         return -EINVAL;
1190 }
1191
1192 static int vidioc_g_ctrl (struct file *file, void *priv,
1193                                 struct v4l2_control *ctrl)
1194 {
1195         struct tm6000_fh  *fh=priv;
1196         struct tm6000_core *dev    = fh->dev;
1197         int  val;
1198
1199         /* FIXME: Probably, those won't work! Maybe we need shadow regs */
1200         switch (ctrl->id) {
1201         case V4L2_CID_CONTRAST:
1202                 val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
1203                 break;
1204         case V4L2_CID_BRIGHTNESS:
1205                 val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
1206                 return 0;
1207         case V4L2_CID_SATURATION:
1208                 val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
1209                 return 0;
1210         case V4L2_CID_HUE:
1211                 val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
1212                 return 0;
1213         default:
1214                 return -EINVAL;
1215         }
1216
1217         if (val<0)
1218                 return val;
1219
1220         ctrl->value=val;
1221
1222         return 0;
1223 }
1224 static int vidioc_s_ctrl (struct file *file, void *priv,
1225                                 struct v4l2_control *ctrl)
1226 {
1227         struct tm6000_fh   *fh  =priv;
1228         struct tm6000_core *dev = fh->dev;
1229         u8  val=ctrl->value;
1230
1231         switch (ctrl->id) {
1232         case V4L2_CID_CONTRAST:
1233   tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1234                 return 0;
1235         case V4L2_CID_BRIGHTNESS:
1236   tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1237                 return 0;
1238         case V4L2_CID_SATURATION:
1239   tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1240                 return 0;
1241         case V4L2_CID_HUE:
1242   tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1243                 return 0;
1244         }
1245         return -EINVAL;
1246 }
1247
1248 static int vidioc_g_tuner (struct file *file, void *priv,
1249                                 struct v4l2_tuner *t)
1250 {
1251         struct tm6000_fh   *fh  =priv;
1252         struct tm6000_core *dev = fh->dev;
1253
1254         if (unlikely(UNSET == dev->tuner_type))
1255                 return -EINVAL;
1256         if (0 != t->index)
1257                 return -EINVAL;
1258
1259         strcpy(t->name, "Television");
1260         t->type       = V4L2_TUNER_ANALOG_TV;
1261         t->capability = V4L2_TUNER_CAP_NORM;
1262         t->rangehigh  = 0xffffffffUL;
1263         t->rxsubchans = V4L2_TUNER_SUB_MONO;
1264
1265         return 0;
1266 }
1267
1268 static int vidioc_s_tuner (struct file *file, void *priv,
1269                                 struct v4l2_tuner *t)
1270 {
1271         struct tm6000_fh   *fh  =priv;
1272         struct tm6000_core *dev = fh->dev;
1273
1274         if (UNSET == dev->tuner_type)
1275                 return -EINVAL;
1276         if (0 != t->index)
1277                 return -EINVAL;
1278
1279         return 0;
1280 }
1281
1282 static int vidioc_g_frequency (struct file *file, void *priv,
1283                                 struct v4l2_frequency *f)
1284 {
1285         struct tm6000_fh   *fh  =priv;
1286         struct tm6000_core *dev = fh->dev;
1287
1288         if (unlikely(UNSET == dev->tuner_type))
1289                 return -EINVAL;
1290
1291         f->type = V4L2_TUNER_ANALOG_TV;
1292         f->frequency = dev->freq;
1293
1294         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1295
1296         return 0;
1297 }
1298
1299 static int vidioc_s_frequency (struct file *file, void *priv,
1300                                 struct v4l2_frequency *f)
1301 {
1302         struct tm6000_fh   *fh  =priv;
1303         struct tm6000_core *dev = fh->dev;
1304
1305         if (unlikely(f->type != V4L2_TUNER_ANALOG_TV))
1306                 return -EINVAL;
1307
1308         if (unlikely(UNSET == dev->tuner_type))
1309                 return -EINVAL;
1310         if (unlikely(f->tuner != 0))
1311                 return -EINVAL;
1312
1313 //      mutex_lock(&dev->lock);
1314         dev->freq = f->frequency;
1315         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1316 //      mutex_unlock(&dev->lock);
1317
1318         return 0;
1319 }
1320
1321 /* ------------------------------------------------------------------
1322         File operations for the device
1323    ------------------------------------------------------------------*/
1324
1325 static int tm6000_open(struct file *file)
1326 {
1327         struct video_device *vdev = video_devdata(file);
1328         struct tm6000_core *dev = video_drvdata(file);
1329         struct tm6000_fh *fh;
1330         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1331         int i,rc;
1332
1333         printk(KERN_INFO "tm6000: open called (dev=%s)\n",
1334                 video_device_node_name(vdev));
1335
1336         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1337                 video_device_node_name(vdev));
1338
1339
1340         /* If more than one user, mutex should be added */
1341         dev->users++;
1342
1343         dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1344                 video_device_node_name(vdev), v4l2_type_names[type],
1345                 dev->users);
1346
1347         /* allocate + initialize per filehandle data */
1348         fh = kzalloc(sizeof(*fh),GFP_KERNEL);
1349         if (NULL == fh) {
1350                 dev->users--;
1351                 return -ENOMEM;
1352         }
1353
1354         file->private_data = fh;
1355         fh->dev      = dev;
1356
1357         fh->type     = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1358         dev->fourcc  = format[0].fourcc;
1359
1360         fh->fmt      = format_by_fourcc(dev->fourcc);
1361
1362         tm6000_get_std_res (dev);
1363
1364         fh->width    = dev->width;
1365         fh->height   = dev->height;
1366
1367         dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1368                                                 "dev->vidq=0x%08lx\n",
1369                 (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq);
1370         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1371                                 "queued=%d\n",list_empty(&dev->vidq.queued));
1372         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1373                                 "active=%d\n",list_empty(&dev->vidq.active));
1374
1375         /* initialize hardware on analog mode */
1376         if (dev->mode!=TM6000_MODE_ANALOG) {
1377                 rc=tm6000_init_analog_mode (dev);
1378                 if (rc<0)
1379                         return rc;
1380
1381                 /* Put all controls at a sane state */
1382                 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1383                         qctl_regs[i] =tm6000_qctrl[i].default_value;
1384
1385                 dev->mode=TM6000_MODE_ANALOG;
1386         }
1387
1388         videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1389                         NULL, &dev->slock,
1390                         fh->type,
1391                         V4L2_FIELD_INTERLACED,
1392                         sizeof(struct tm6000_buffer),fh);
1393
1394         return 0;
1395 }
1396
1397 static ssize_t
1398 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1399 {
1400         struct tm6000_fh        *fh = file->private_data;
1401
1402         if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1403                 if (res_locked(fh->dev))
1404                         return -EBUSY;
1405
1406                 return videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1407                                         file->f_flags & O_NONBLOCK);
1408         }
1409         return 0;
1410 }
1411
1412 static unsigned int
1413 tm6000_poll(struct file *file, struct poll_table_struct *wait)
1414 {
1415         struct tm6000_fh        *fh = file->private_data;
1416         struct tm6000_buffer    *buf;
1417
1418         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1419                 return POLLERR;
1420
1421         if (res_get(fh->dev,fh)) {
1422                 /* streaming capture */
1423                 if (list_empty(&fh->vb_vidq.stream))
1424                         return POLLERR;
1425                 buf = list_entry(fh->vb_vidq.stream.next,struct tm6000_buffer,vb.stream);
1426         } else {
1427                 /* read() capture */
1428                 return videobuf_poll_stream(file, &fh->vb_vidq,
1429                                             wait);
1430         }
1431         poll_wait(file, &buf->vb.done, wait);
1432         if (buf->vb.state == VIDEOBUF_DONE ||
1433             buf->vb.state == VIDEOBUF_ERROR)
1434                 return POLLIN|POLLRDNORM;
1435         return 0;
1436 }
1437
1438 static int tm6000_release(struct file *file)
1439 {
1440         struct tm6000_fh         *fh = file->private_data;
1441         struct tm6000_core      *dev = fh->dev;
1442         struct video_device    *vdev = video_devdata(file);
1443
1444         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1445                 video_device_node_name(vdev), dev->users);
1446
1447         dev->users--;
1448
1449         if (!dev->users) {
1450                 tm6000_uninit_isoc(dev);
1451                 videobuf_mmap_free(&fh->vb_vidq);
1452         }
1453
1454         kfree (fh);
1455
1456         return 0;
1457 }
1458
1459 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1460 {
1461         struct tm6000_fh        *fh = file->private_data;
1462         int ret;
1463
1464         ret=videobuf_mmap_mapper(&fh->vb_vidq, vma);
1465
1466         return ret;
1467 }
1468
1469 static struct v4l2_file_operations tm6000_fops = {
1470         .owner          = THIS_MODULE,
1471         .open           = tm6000_open,
1472         .release        = tm6000_release,
1473         .ioctl          = video_ioctl2, /* V4L2 ioctl handler */
1474         .read           = tm6000_read,
1475         .poll           = tm6000_poll,
1476         .mmap           = tm6000_mmap,
1477 };
1478
1479 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1480         .vidioc_querycap          = vidioc_querycap,
1481         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1482         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1483         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1484         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1485         .vidioc_s_std             = vidioc_s_std,
1486         .vidioc_enum_input        = vidioc_enum_input,
1487         .vidioc_g_input           = vidioc_g_input,
1488         .vidioc_s_input           = vidioc_s_input,
1489         .vidioc_queryctrl         = vidioc_queryctrl,
1490         .vidioc_g_ctrl            = vidioc_g_ctrl,
1491         .vidioc_s_ctrl            = vidioc_s_ctrl,
1492         .vidioc_g_tuner           = vidioc_g_tuner,
1493         .vidioc_s_tuner           = vidioc_s_tuner,
1494         .vidioc_g_frequency       = vidioc_g_frequency,
1495         .vidioc_s_frequency       = vidioc_s_frequency,
1496         .vidioc_streamon          = vidioc_streamon,
1497         .vidioc_streamoff         = vidioc_streamoff,
1498         .vidioc_reqbufs           = vidioc_reqbufs,
1499         .vidioc_querybuf          = vidioc_querybuf,
1500         .vidioc_qbuf              = vidioc_qbuf,
1501         .vidioc_dqbuf             = vidioc_dqbuf,
1502 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1503         .vidiocgmbuf              = vidiocgmbuf,
1504 #endif
1505 };
1506
1507 static struct video_device tm6000_template = {
1508         .name           = "tm6000",
1509         .fops           = &tm6000_fops,
1510         .ioctl_ops      = &video_ioctl_ops,
1511         .release        = video_device_release,
1512         .tvnorms        = TM6000_STD,
1513         .current_norm   = V4L2_STD_NTSC_M,
1514 };
1515
1516 /* -----------------------------------------------------------------
1517         Initialization and module stuff
1518    ------------------------------------------------------------------*/
1519
1520 int tm6000_v4l2_register(struct tm6000_core *dev)
1521 {
1522         int ret = -1;
1523         struct video_device *vfd;
1524
1525         vfd = video_device_alloc();
1526         if(!vfd) {
1527                 return -ENOMEM;
1528         }
1529         dev->vfd = vfd;
1530
1531         /* init video dma queues */
1532         INIT_LIST_HEAD(&dev->vidq.active);
1533         INIT_LIST_HEAD(&dev->vidq.queued);
1534
1535         memcpy (dev->vfd, &tm6000_template, sizeof(*(dev->vfd)));
1536         dev->vfd->debug=tm6000_debug;
1537         vfd->v4l2_dev = &dev->v4l2_dev;
1538         video_set_drvdata(vfd, dev);
1539
1540         ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1541         printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1542         return ret;
1543 }
1544
1545 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1546 {
1547         video_unregister_device(dev->vfd);
1548
1549         return 0;
1550 }
1551
1552 int tm6000_v4l2_exit(void)
1553 {
1554         return 0;
1555 }
1556
1557 module_param(video_nr, int, 0);
1558 MODULE_PARM_DESC(video_nr,"Allow changing video device number");
1559
1560 module_param_named (debug, tm6000_debug, int, 0444);
1561 MODULE_PARM_DESC(debug,"activates debug info");
1562
1563 module_param(vid_limit,int,0644);
1564 MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes");
1565