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   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  40      /* 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 static LIST_HEAD(tm6000_corelist);
 120
 121 /* ------------------------------------------------------------------
 122         DMA and thread functions
 123    ------------------------------------------------------------------*/
 124
 125 #define norm_maxw(a) 720
 126 #define norm_maxh(a) 576
 127
 128 #define norm_minw(a) norm_maxw(a)
 129 #define norm_minh(a) norm_maxh(a)
 130
 131 /*
 132  * video-buf generic routine to get the next available buffer
 133  */
 134 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
 135                                struct tm6000_buffer   **buf)
 136 {
 137         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 138         char *outp;
 139
 140         if (list_empty(&dma_q->active)) {
 141                 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
 142                 *buf = NULL;
 143                 return;
 144         }
 145
 146         *buf = list_entry(dma_q->active.next,
 147                         struct tm6000_buffer, vb.queue);
 148
 149         if (!buf)
 150                 return;
 151
 152         /* Cleans up buffer - Usefull for testing for frame/URB loss */
 153         outp = videobuf_to_vmalloc(&(*buf)->vb);
 154 //      if (outp)
 155 //              memset(outp, 0, (*buf)->vb.size);
 156
 157         return;
 158 }
 159
 160 /*
 161  * Announces that a buffer were filled and request the next
 162  */
 163 static inline void buffer_filled(struct tm6000_core *dev,
 164                                  struct tm6000_dmaqueue *dma_q,
 165                                  struct tm6000_buffer *buf)
 166 {
 167         /* Advice that buffer was filled */
 168         dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
 169         buf->vb.state = VIDEOBUF_DONE;
 170         buf->vb.field_count++;
 171         do_gettimeofday(&buf->vb.ts);
 172
 173         list_del(&buf->vb.queue);
 174         wake_up(&buf->vb.done);
 175 }
 176
 177 const char *tm6000_msg_type[] = {
 178         "unknown(0)",   /* 0 */
 179         "video",        /* 1 */
 180         "audio",        /* 2 */
 181         "vbi",          /* 3 */
 182         "pts",          /* 4 */
 183         "err",          /* 5 */
 184         "unknown(6)",   /* 6 */
 185         "unknown(7)",   /* 7 */
 186 };
 187
 188 /*
 189  * Identify the tm5600/6000 buffer header type and properly handles
 190  */
 191 static int copy_packet(struct urb *urb, u32 header, u8 **ptr, u8 *endp,
 192                         u8 *out_p, struct tm6000_buffer **buf)
 193 {
 194         struct tm6000_dmaqueue  *dma_q = urb->context;
 195         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 196         u8 c;
 197         unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
 198         int rc = 0;
 199         /* FIXME: move to tm6000-isoc */
 200         static int last_line = -2, start_line = -2, last_field = -2;
 201
 202         /* FIXME: this is the hardcoded window size
 203          */
 204         unsigned int linewidth = (*buf)->vb.width << 1;
 205
 206         if (!dev->isoc_ctl.cmd) {
 207                 c = (header >> 24) & 0xff;
 208
 209                 /* split the header fields */
 210                 size  = (((header & 0x7e) << 1) -1) *4;
 211                 block = (header >> 7) & 0xf;
 212                 field = (header >> 11) & 0x1;
 213                 line  = (header >> 12) & 0x1ff;
 214                 cmd   = (header >> 21) & 0x7;
 215
 216                 /* Validates header fields */
 217                 if(size > TM6000_URB_MSG_LEN)
 218                         size = TM6000_URB_MSG_LEN;
 219
 220                 if (cmd == TM6000_URB_MSG_VIDEO) {
 221                         if ((block+1)*TM6000_URB_MSG_LEN>linewidth)
 222                                 cmd = TM6000_URB_MSG_ERR;
 223
 224                         /* FIXME: Mounts the image as field0+field1
 225                          * It should, instead, check if the user selected
 226                          * entrelaced or non-entrelaced mode
 227                          */
 228                         pos= ((line<<1)+field)*linewidth +
 229                                 block*TM6000_URB_MSG_LEN;
 230
 231                         /* Don't allow to write out of the buffer */
 232                         if (pos+TM6000_URB_MSG_LEN > (*buf)->vb.size) {
 233                                 dprintk(dev, V4L2_DEBUG_ISOC,
 234                                         "ERR: size=%d, num=%d, line=%d, "
 235                                         "field=%d\n",
 236                                         size, block, line, field);
 237
 238                                 cmd = TM6000_URB_MSG_ERR;
 239                         }
 240                 } else {
 241                         pos=0;
 242                 }
 243
 244                 /* Prints debug info */
 245                 dprintk(dev, V4L2_DEBUG_ISOC, "size=%d, num=%d, "
 246                                 " line=%d, field=%d\n",
 247                                 size, block, line, field);
 248
 249                 if ((last_line!=line)&&(last_line+1!=line) &&
 250                     (cmd != TM6000_URB_MSG_ERR) )  {
 251                         if (cmd != TM6000_URB_MSG_VIDEO)  {
 252                                 dprintk(dev, V4L2_DEBUG_ISOC,  "cmd=%d, "
 253                                         "size=%d, num=%d, line=%d, field=%d\n",
 254                                         cmd, size, block, line, field);
 255                         }
 256                         if (start_line<0)
 257                                 start_line=last_line;
 258                         /* Prints debug info */
 259                         dprintk(dev, V4L2_DEBUG_ISOC, "lines= %d-%d, "
 260                                         "field=%d\n",
 261                                         start_line, last_line, field);
 262
 263                         if ((start_line<6 && last_line>200) &&
 264                                 (last_field != field) ) {
 265
 266                                 dev->isoc_ctl.nfields++;
 267                                 if (dev->isoc_ctl.nfields>=2) {
 268                                         dev->isoc_ctl.nfields=0;
 269
 270                                         /* Announces that a new buffer were filled */
 271                                         buffer_filled (dev, dma_q, *buf);
 272                                         dprintk(dev, V4L2_DEBUG_ISOC,
 273                                                         "new buffer filled\n");
 274                                         get_next_buf (dma_q, buf);
 275                                         if (!*buf)
 276                                                 return rc;
 277                                         out_p = videobuf_to_vmalloc(&((*buf)->vb));
 278                                         if (!out_p)
 279                                                 return rc;
 280
 281                                         pos = dev->isoc_ctl.pos = 0;
 282                                 }
 283                         }
 284
 285                         start_line=line;
 286                         last_field=field;
 287                 }
 288                 if (cmd == TM6000_URB_MSG_VIDEO)
 289                         last_line = line;
 290
 291                 pktsize = TM6000_URB_MSG_LEN;
 292         } else {
 293                 /* Continue the last copy */
 294                 cmd = dev->isoc_ctl.cmd;
 295                 size= dev->isoc_ctl.size;
 296                 pos = dev->isoc_ctl.pos;
 297                 pktsize = dev->isoc_ctl.pktsize;
 298         }
 299
 300         cpysize = (endp-(*ptr) > size) ? size : endp - *ptr;
 301
 302         if (cpysize) {
 303                 /* handles each different URB message */
 304                 switch(cmd) {
 305                 case TM6000_URB_MSG_VIDEO:
 306                         /* Fills video buffer */
 307                         memcpy(&out_p[pos], *ptr, cpysize);
 308                         break;
 309                 case TM6000_URB_MSG_PTS:
 310                         break;
 311                 case TM6000_URB_MSG_AUDIO:
 312 /* Need some code to process audio */
 313 printk ("%ld: cmd=%s, size=%d\n", jiffies,
 314                                 tm6000_msg_type[cmd],size);
 315                         break;
 316                 default:
 317                         dprintk (dev, V4L2_DEBUG_ISOC, "cmd=%s, size=%d\n",
 318                                                 tm6000_msg_type[cmd],size);
 319                 }
 320         }
 321         if (cpysize<size) {
 322                 /* End of URB packet, but cmd processing is not
 323                  * complete. Preserve the state for a next packet
 324                  */
 325                 dev->isoc_ctl.pos = pos+cpysize;
 326                 dev->isoc_ctl.size= size-cpysize;
 327                 dev->isoc_ctl.cmd = cmd;
 328                 dev->isoc_ctl.pktsize = pktsize-cpysize;
 329                 (*ptr)+=cpysize;
 330         } else {
 331                 dev->isoc_ctl.cmd = 0;
 332                 (*ptr)+=pktsize;
 333         }
 334
 335         return rc;
 336 }
 337
 338 static int copy_streams(u8 *data, u8 *out_p, unsigned long len,
 339                         struct urb *urb, struct tm6000_buffer **buf)
 340 {
 341         struct tm6000_dmaqueue  *dma_q = urb->context;
 342         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 343         u8 *ptr=data, *endp=data+len;
 344         unsigned long header=0;
 345         int rc=0;
 346
 347         for (ptr=data; ptr<endp;) {
 348                 if (!dev->isoc_ctl.cmd) {
 349                         u8 *p=(u8 *)&dev->isoc_ctl.tmp_buf;
 350                         /* FIXME: This seems very complex
 351                          * It just recovers up to 3 bytes of the header that
 352                          * might be at the previous packet
 353                          */
 354                         if (dev->isoc_ctl.tmp_buf_len) {
 355                                 while (dev->isoc_ctl.tmp_buf_len) {
 356                                         if ( *(ptr+3-dev->isoc_ctl.tmp_buf_len) == 0x47) {
 357                                                 break;
 358                                         }
 359                                         p++;
 360                                         dev->isoc_ctl.tmp_buf_len--;
 361                                 }
 362                                 if (dev->isoc_ctl.tmp_buf_len) {
 363                                         memcpy(&header, p,
 364                                                 dev->isoc_ctl.tmp_buf_len);
 365                                         memcpy((u8 *)&header +
 366                                                 dev->isoc_ctl.tmp_buf_len,
 367                                                 ptr,
 368                                                 4 - dev->isoc_ctl.tmp_buf_len);
 369                                         ptr += 4 - dev->isoc_ctl.tmp_buf_len;
 370                                         goto HEADER;
 371                                 }
 372                         }
 373                         /* Seek for sync */
 374                         for (;ptr<endp-3;ptr++) {
 375                                 if (*(ptr+3)==0x47)
 376                                         break;
 377                         }
 378
 379                         if (ptr+3>=endp) {
 380                                 dev->isoc_ctl.tmp_buf_len=endp-ptr;
 381                                 memcpy (&dev->isoc_ctl.tmp_buf,ptr,
 382                                         dev->isoc_ctl.tmp_buf_len);
 383                                 dev->isoc_ctl.cmd=0;
 384                                 return rc;
 385                         }
 386
 387                         /* Get message header */
 388                         header=*(unsigned long *)ptr;
 389                         ptr+=4;
 390                 }
 391 HEADER:
 392                 /* Copy or continue last copy */
 393                 rc=copy_packet(urb,header,&ptr,endp,out_p,buf);
 394                 if (rc<0) {
 395                         buf=NULL;
 396                         printk(KERN_ERR "tm6000: buffer underrun at %ld\n",
 397                                         jiffies);
 398                         return rc;
 399                 }
 400                 if (!*buf)
 401                         return 0;
 402         }
 403
 404         return 0;
 405 }
 406 /*
 407  * Identify the tm5600/6000 buffer header type and properly handles
 408  */
 409 static int copy_multiplexed(u8 *ptr, u8 *out_p, unsigned long len,
 410                         struct urb *urb, struct tm6000_buffer **buf)
 411 {
 412         struct tm6000_dmaqueue  *dma_q = urb->context;
 413         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 414         unsigned int pos=dev->isoc_ctl.pos,cpysize;
 415         int rc=1;
 416
 417         while (len>0) {
 418                 cpysize=min(len,(*buf)->vb.size-pos);
 419 //printk("Copying %d bytes (max=%lu) from %p to %p[%u]\n",cpysize,(*buf)->vb.size,ptr,out_p,pos);
 420                 memcpy(&out_p[pos], ptr, cpysize);
 421                 pos+=cpysize;
 422                 ptr+=cpysize;
 423                 len-=cpysize;
 424                 if (pos >= (*buf)->vb.size) {
 425                         pos=0;
 426                         /* Announces that a new buffer were filled */
 427                         buffer_filled (dev, dma_q, *buf);
 428                         dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
 429                         get_next_buf (dma_q, buf);
 430                         if (!*buf)
 431                                 break;
 432                         out_p = videobuf_to_vmalloc(&((*buf)->vb));
 433                         if (!out_p)
 434                                 return rc;
 435                         pos = 0;
 436                 }
 437         }
 438
 439         dev->isoc_ctl.pos=pos;
 440         return rc;
 441 }
 442
 443 static void inline print_err_status (struct tm6000_core *dev,
 444                                      int packet, int status)
 445 {
 446         char *errmsg = "Unknown";
 447
 448         switch(status) {
 449         case -ENOENT:
 450                 errmsg = "unlinked synchronuously";
 451                 break;
 452         case -ECONNRESET:
 453                 errmsg = "unlinked asynchronuously";
 454                 break;
 455         case -ENOSR:
 456                 errmsg = "Buffer error (overrun)";
 457                 break;
 458         case -EPIPE:
 459                 errmsg = "Stalled (device not responding)";
 460                 break;
 461         case -EOVERFLOW:
 462                 errmsg = "Babble (bad cable?)";
 463                 break;
 464         case -EPROTO:
 465                 errmsg = "Bit-stuff error (bad cable?)";
 466                 break;
 467         case -EILSEQ:
 468                 errmsg = "CRC/Timeout (could be anything)";
 469                 break;
 470         case -ETIME:
 471                 errmsg = "Device does not respond";
 472                 break;
 473         }
 474         if (packet<0) {
 475                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
 476                         status, errmsg);
 477         } else {
 478                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
 479                         packet, status, errmsg);
 480         }
 481 }
 482
 483
 484 /*
 485  * Controls the isoc copy of each urb packet
 486  */
 487 static inline int tm6000_isoc_copy(struct urb *urb)
 488 {
 489         struct tm6000_dmaqueue  *dma_q = urb->context;
 490         struct tm6000_core *dev= container_of(dma_q,struct tm6000_core,vidq);
 491         struct tm6000_buffer *buf;
 492         int i, len=0, rc=1;
 493         int size;
 494         char *outp = NULL, *p;
 495         unsigned long copied;
 496
 497         get_next_buf(dma_q, &buf);
 498         if (buf)
 499                 outp = videobuf_to_vmalloc(&buf->vb);
 500
 501         if (!outp)
 502                 return 0;
 503
 504         size = buf->vb.size;
 505
 506         copied=0;
 507
 508         if (urb->status<0) {
 509                 print_err_status (dev,-1,urb->status);
 510                 return 0;
 511         }
 512
 513         for (i = 0; i < urb->number_of_packets; i++) {
 514                 int status = urb->iso_frame_desc[i].status;
 515
 516                 if (status<0) {
 517                         print_err_status (dev,i,status);
 518                         continue;
 519                 }
 520
 521                 len=urb->iso_frame_desc[i].actual_length;
 522
 523 //              if (len>=TM6000_URB_MSG_LEN) {
 524                         p=urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 525                         if (!urb->iso_frame_desc[i].status) {
 526                                 if ((buf->fmt->fourcc)==V4L2_PIX_FMT_TM6000) {
 527                                         rc=copy_multiplexed(p, outp, len, urb, &buf);
 528                                         if (rc<=0)
 529                                                 return rc;
 530                                 } else {
 531                                         copy_streams(p, outp, len, urb, &buf);
 532                                 }
 533                         }
 534                         copied += len;
 535                         if (copied >= size || !buf)
 536                                 break;
 537 //              }
 538         }
 539         return rc;
 540 }
 541
 542 /* ------------------------------------------------------------------
 543         URB control
 544    ------------------------------------------------------------------*/
 545
 546 /*
 547  * IRQ callback, called by URB callback
 548  */
 549 static void tm6000_irq_callback(struct urb *urb)
 550 {
 551         struct tm6000_dmaqueue  *dma_q = urb->context;
 552         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 553         int i;
 554
 555         if (!dev)
 556                 return;
 557
 558         spin_lock(&dev->slock);
 559         tm6000_isoc_copy(urb);
 560         spin_unlock(&dev->slock);
 561
 562         /* Reset urb buffers */
 563         for (i = 0; i < urb->number_of_packets; i++) {
 564                 urb->iso_frame_desc[i].status = 0;
 565                 urb->iso_frame_desc[i].actual_length = 0;
 566         }
 567
 568         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 569         if (urb->status)
 570                 tm6000_err("urb resubmit failed (error=%i)\n",
 571                         urb->status);
 572 }
 573
 574 /*
 575  * Stop and Deallocate URBs
 576  */
 577 static void tm6000_uninit_isoc(struct tm6000_core *dev)
 578 {
 579         struct urb *urb;
 580         int i;
 581
 582         dev->isoc_ctl.nfields = -1;
 583         dev->isoc_ctl.buf = NULL;
 584         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 585                 urb=dev->isoc_ctl.urb[i];
 586                 if (urb) {
 587                         usb_kill_urb(urb);
 588                         usb_unlink_urb(urb);
 589                         if (dev->isoc_ctl.transfer_buffer[i]) {
 590                                 usb_free_coherent(dev->udev,
 591                                                 urb->transfer_buffer_length,
 592                                                 dev->isoc_ctl.transfer_buffer[i],
 593                                                 urb->transfer_dma);
 594                         }
 595                         usb_free_urb(urb);
 596                         dev->isoc_ctl.urb[i] = NULL;
 597                 }
 598                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 599         }
 600
 601         kfree (dev->isoc_ctl.urb);
 602         kfree (dev->isoc_ctl.transfer_buffer);
 603
 604         dev->isoc_ctl.urb=NULL;
 605         dev->isoc_ctl.transfer_buffer=NULL;
 606         dev->isoc_ctl.num_bufs = 0;
 607
 608         dev->isoc_ctl.num_bufs=0;
 609 }
 610
 611 /*
 612  * Allocate URBs and start IRQ
 613  */
 614 static int tm6000_prepare_isoc(struct tm6000_core *dev, unsigned int framesize)
 615 {
 616         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 617         int i, j, sb_size, pipe, size, max_packets, num_bufs = 5;
 618         struct urb *urb;
 619
 620         /* De-allocates all pending stuff */
 621         tm6000_uninit_isoc(dev);
 622
 623         usb_set_interface(dev->udev,
 624                           dev->isoc_in.bInterfaceNumber,
 625                           dev->isoc_in.bAlternateSetting);
 626
 627         pipe = usb_rcvisocpipe(dev->udev,
 628                                dev->isoc_in.endp->desc.bEndpointAddress &
 629                                USB_ENDPOINT_NUMBER_MASK);
 630
 631         size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
 632
 633         if (size > dev->isoc_in.maxsize)
 634                 size = dev->isoc_in.maxsize;
 635
 636         dev->isoc_ctl.max_pkt_size = size;
 637
 638         max_packets = ( framesize + size - 1) / size;
 639
 640         if (max_packets > TM6000_MAX_ISO_PACKETS)
 641                 max_packets = TM6000_MAX_ISO_PACKETS;
 642
 643         sb_size = max_packets * size;
 644
 645         dev->isoc_ctl.num_bufs = num_bufs;
 646
 647         dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 648         if (!dev->isoc_ctl.urb) {
 649                 tm6000_err("cannot alloc memory for usb buffers\n");
 650                 return -ENOMEM;
 651         }
 652
 653         dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
 654                                    GFP_KERNEL);
 655         if (!dev->isoc_ctl.transfer_buffer) {
 656                 tm6000_err("cannot allocate memory for usbtransfer\n");
 657                 kfree(dev->isoc_ctl.urb);
 658                 return -ENOMEM;
 659         }
 660
 661         dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
 662                     " (%d bytes) of %d bytes each to handle %u size\n",
 663                     max_packets, num_bufs, sb_size,
 664                     dev->isoc_in.maxsize, size);
 665
 666         /* allocate urbs and transfer buffers */
 667         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 668                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 669                 if (!urb) {
 670                         tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
 671                         tm6000_uninit_isoc(dev);
 672                         usb_free_urb(urb);
 673                         return -ENOMEM;
 674                 }
 675                 dev->isoc_ctl.urb[i] = urb;
 676
 677                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
 678                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 679                 if (!dev->isoc_ctl.transfer_buffer[i]) {
 680                         tm6000_err ("unable to allocate %i bytes for transfer"
 681                                         " buffer %i%s\n",
 682                                         sb_size, i,
 683                                         in_interrupt()?" while in int":"");
 684                         tm6000_uninit_isoc(dev);
 685                         return -ENOMEM;
 686                 }
 687                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
 688
 689                 usb_fill_bulk_urb(urb, dev->udev, pipe,
 690                                   dev->isoc_ctl.transfer_buffer[i], sb_size,
 691                                   tm6000_irq_callback, dma_q);
 692                 urb->interval = dev->isoc_in.endp->desc.bInterval;
 693                 urb->number_of_packets = max_packets;
 694                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 695
 696                 for (j = 0; j < max_packets; j++) {
 697                         urb->iso_frame_desc[j].offset = size * j;
 698                         urb->iso_frame_desc[j].length = size;
 699                 }
 700         }
 701
 702         return 0;
 703 }
 704
 705 static int tm6000_start_thread( struct tm6000_core *dev)
 706 {
 707         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 708         int i;
 709
 710         dma_q->frame=0;
 711         dma_q->ini_jiffies=jiffies;
 712
 713         init_waitqueue_head(&dma_q->wq);
 714
 715         /* submit urbs and enables IRQ */
 716         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 717                 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 718                 if (rc) {
 719                         tm6000_err("submit of urb %i failed (error=%i)\n", i,
 720                                    rc);
 721                         tm6000_uninit_isoc(dev);
 722                         return rc;
 723                 }
 724         }
 725
 726         return 0;
 727 }
 728
 729 /* ------------------------------------------------------------------
 730         Videobuf operations
 731    ------------------------------------------------------------------*/
 732
 733 static int
 734 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 735 {
 736         struct tm6000_fh *fh = vq->priv_data;
 737
 738         *size = fh->fmt->depth * fh->width * fh->height >> 3;
 739         if (0 == *count)
 740                 *count = TM6000_DEF_BUF;
 741
 742         if (*count < TM6000_MIN_BUF) {
 743                 *count=TM6000_MIN_BUF;
 744         }
 745
 746         while (*size * *count > vid_limit * 1024 * 1024)
 747                 (*count)--;
 748
 749         return 0;
 750 }
 751
 752 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
 753 {
 754         struct tm6000_fh *fh = vq->priv_data;
 755         struct tm6000_core   *dev = fh->dev;
 756         unsigned long flags;
 757
 758         if (in_interrupt())
 759                 BUG();
 760
 761         /* We used to wait for the buffer to finish here, but this didn't work
 762            because, as we were keeping the state as VIDEOBUF_QUEUED,
 763            videobuf_queue_cancel marked it as finished for us.
 764            (Also, it could wedge forever if the hardware was misconfigured.)
 765
 766            This should be safe; by the time we get here, the buffer isn't
 767            queued anymore. If we ever start marking the buffers as
 768            VIDEOBUF_ACTIVE, it won't be, though.
 769         */
 770         spin_lock_irqsave(&dev->slock, flags);
 771         if (dev->isoc_ctl.buf == buf)
 772                 dev->isoc_ctl.buf = NULL;
 773         spin_unlock_irqrestore(&dev->slock, flags);
 774
 775         videobuf_vmalloc_free(&buf->vb);
 776         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 777 }
 778
 779 static int
 780 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 781                                                 enum v4l2_field field)
 782 {
 783         struct tm6000_fh     *fh  = vq->priv_data;
 784         struct tm6000_buffer *buf = container_of(vb,struct tm6000_buffer,vb);
 785         struct tm6000_core   *dev = fh->dev;
 786         int rc = 0, urb_init = 0;
 787
 788         BUG_ON(NULL == fh->fmt);
 789
 790
 791         /* FIXME: It assumes depth=2 */
 792         /* The only currently supported format is 16 bits/pixel */
 793         buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
 794         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 795                 return -EINVAL;
 796
 797         if (buf->fmt       != fh->fmt    ||
 798             buf->vb.width  != fh->width  ||
 799             buf->vb.height != fh->height ||
 800             buf->vb.field  != field) {
 801                 buf->fmt       = fh->fmt;
 802                 buf->vb.width  = fh->width;
 803                 buf->vb.height = fh->height;
 804                 buf->vb.field  = field;
 805                 buf->vb.state = VIDEOBUF_NEEDS_INIT;
 806         }
 807
 808         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 809                 if (0 != (rc = videobuf_iolock(vq, &buf->vb, NULL)))
 810                         goto fail;
 811                 urb_init = 1;
 812         }
 813
 814         if (!dev->isoc_ctl.num_bufs)
 815                 urb_init = 1;
 816
 817         if (urb_init) {
 818                 rc = tm6000_prepare_isoc(dev, buf->vb.size);
 819                 if (rc < 0)
 820                         goto fail;
 821
 822                 rc = tm6000_start_thread(dev);
 823                 if (rc < 0)
 824                         goto fail;
 825
 826         }
 827
 828         buf->vb.state = VIDEOBUF_PREPARED;
 829         return 0;
 830
 831 fail:
 832         free_buffer(vq, buf);
 833         return rc;
 834 }
 835
 836 static void
 837 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 838 {
 839         struct tm6000_buffer    *buf     = container_of(vb,struct tm6000_buffer,vb);
 840         struct tm6000_fh        *fh      = vq->priv_data;
 841         struct tm6000_core      *dev     = fh->dev;
 842         struct tm6000_dmaqueue  *vidq    = &dev->vidq;
 843
 844         buf->vb.state = VIDEOBUF_QUEUED;
 845         list_add_tail(&buf->vb.queue, &vidq->active);
 846 }
 847
 848 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 849 {
 850         struct tm6000_buffer   *buf  = container_of(vb,struct tm6000_buffer,vb);
 851
 852         free_buffer(vq,buf);
 853 }
 854
 855 static struct videobuf_queue_ops tm6000_video_qops = {
 856         .buf_setup      = buffer_setup,
 857         .buf_prepare    = buffer_prepare,
 858         .buf_queue      = buffer_queue,
 859         .buf_release    = buffer_release,
 860 };
 861
 862 /* ------------------------------------------------------------------
 863         IOCTL handling
 864    ------------------------------------------------------------------*/
 865
 866 static int res_get(struct tm6000_core *dev, struct tm6000_fh *fh)
 867 {
 868         /* is it free? */
 869         mutex_lock(&dev->lock);
 870         if (dev->resources) {
 871                 /* no, someone else uses it */
 872                 mutex_unlock(&dev->lock);
 873                 return 0;
 874         }
 875         /* it's free, grab it */
 876         dev->resources =1;
 877         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
 878         mutex_unlock(&dev->lock);
 879         return 1;
 880 }
 881
 882 static int res_locked(struct tm6000_core *dev)
 883 {
 884         return (dev->resources);
 885 }
 886
 887 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
 888 {
 889         mutex_lock(&dev->lock);
 890         dev->resources = 0;
 891         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
 892         mutex_unlock(&dev->lock);
 893 }
 894
 895 /* ------------------------------------------------------------------
 896         IOCTL vidioc handling
 897    ------------------------------------------------------------------*/
 898 static int vidioc_querycap (struct file *file, void  *priv,
 899                                         struct v4l2_capability *cap)
 900 {
 901         //      struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 902
 903         strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
 904         strlcpy(cap->card,"Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
 905         //      strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
 906         cap->version = TM6000_VERSION;
 907         cap->capabilities =     V4L2_CAP_VIDEO_CAPTURE |
 908                                 V4L2_CAP_STREAMING     |
 909                                 V4L2_CAP_TUNER         |
 910                                 V4L2_CAP_READWRITE;
 911         return 0;
 912 }
 913
 914 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 915                                         struct v4l2_fmtdesc *f)
 916 {
 917         if (unlikely(f->index >= ARRAY_SIZE(format)))
 918                 return -EINVAL;
 919
 920         strlcpy(f->description,format[f->index].name,sizeof(f->description));
 921         f->pixelformat = format[f->index].fourcc;
 922         return 0;
 923 }
 924
 925 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 926                                         struct v4l2_format *f)
 927 {
 928         struct tm6000_fh  *fh=priv;
 929
 930         f->fmt.pix.width        = fh->width;
 931         f->fmt.pix.height       = fh->height;
 932         f->fmt.pix.field        = fh->vb_vidq.field;
 933         f->fmt.pix.pixelformat  = fh->fmt->fourcc;
 934         f->fmt.pix.bytesperline =
 935                 (f->fmt.pix.width * fh->fmt->depth) >> 3;
 936         f->fmt.pix.sizeimage =
 937                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 938
 939         return (0);
 940 }
 941
 942 static struct tm6000_fmt* format_by_fourcc(unsigned int fourcc)
 943 {
 944         unsigned int i;
 945
 946         for (i = 0; i < ARRAY_SIZE(format); i++)
 947                 if (format[i].fourcc == fourcc)
 948                         return format+i;
 949         return NULL;
 950 }
 951
 952 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
 953                         struct v4l2_format *f)
 954 {
 955         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 956         struct tm6000_fmt *fmt;
 957         enum v4l2_field field;
 958
 959         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 960         if (NULL == fmt) {
 961                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
 962                                 " invalid.\n", f->fmt.pix.pixelformat);
 963                 return -EINVAL;
 964         }
 965
 966         field = f->fmt.pix.field;
 967
 968         if (field == V4L2_FIELD_ANY) {
 969 //              field=V4L2_FIELD_INTERLACED;
 970                 field=V4L2_FIELD_SEQ_TB;
 971         } else if (V4L2_FIELD_INTERLACED != field) {
 972                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
 973                 return -EINVAL;
 974         }
 975
 976         tm6000_get_std_res (dev);
 977
 978         f->fmt.pix.width  = dev->width;
 979         f->fmt.pix.height = dev->height;
 980
 981         f->fmt.pix.width &= ~0x01;
 982
 983         f->fmt.pix.field = field;
 984
 985         f->fmt.pix.bytesperline =
 986                 (f->fmt.pix.width * fmt->depth) >> 3;
 987         f->fmt.pix.sizeimage =
 988                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 989
 990         return 0;
 991 }
 992
 993 /*FIXME: This seems to be generic enough to be at videodev2 */
 994 static int vidioc_s_fmt_vid_cap (struct file *file, void *priv,
 995                                         struct v4l2_format *f)
 996 {
 997         struct tm6000_fh  *fh=priv;
 998         struct tm6000_core *dev = fh->dev;
 999         int ret = vidioc_try_fmt_vid_cap(file,fh,f);
1000         if (ret < 0)
1001                 return (ret);
1002
1003         fh->fmt           = format_by_fourcc(f->fmt.pix.pixelformat);
1004         fh->width         = f->fmt.pix.width;
1005         fh->height        = f->fmt.pix.height;
1006         fh->vb_vidq.field = f->fmt.pix.field;
1007         fh->type          = f->type;
1008
1009         dev->fourcc       = f->fmt.pix.pixelformat;
1010
1011         tm6000_set_fourcc_format(dev);
1012
1013         return (0);
1014 }
1015
1016 static int vidioc_reqbufs (struct file *file, void *priv,
1017                            struct v4l2_requestbuffers *p)
1018 {
1019         struct tm6000_fh  *fh=priv;
1020
1021         return (videobuf_reqbufs(&fh->vb_vidq, p));
1022 }
1023
1024 static int vidioc_querybuf (struct file *file, void *priv,
1025                             struct v4l2_buffer *p)
1026 {
1027         struct tm6000_fh  *fh=priv;
1028
1029         return (videobuf_querybuf(&fh->vb_vidq, p));
1030 }
1031
1032 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *p)
1033 {
1034         struct tm6000_fh  *fh=priv;
1035
1036         return (videobuf_qbuf(&fh->vb_vidq, p));
1037 }
1038
1039 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *p)
1040 {
1041         struct tm6000_fh  *fh=priv;
1042
1043         return (videobuf_dqbuf(&fh->vb_vidq, p,
1044                                 file->f_flags & O_NONBLOCK));
1045 }
1046
1047 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1048 static int vidiocgmbuf (struct file *file, void *priv, struct video_mbuf *mbuf)
1049 {
1050         struct tm6000_fh  *fh=priv;
1051
1052         return videobuf_cgmbuf (&fh->vb_vidq, mbuf, 8);
1053 }
1054 #endif
1055
1056 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1057 {
1058         struct tm6000_fh  *fh=priv;
1059         struct tm6000_core *dev    = fh->dev;
1060
1061         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1062                 return -EINVAL;
1063         if (i != fh->type)
1064                 return -EINVAL;
1065
1066         if (!res_get(dev,fh))
1067                 return -EBUSY;
1068         return (videobuf_streamon(&fh->vb_vidq));
1069 }
1070
1071 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1072 {
1073         struct tm6000_fh  *fh=priv;
1074         struct tm6000_core *dev    = fh->dev;
1075
1076         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1077                 return -EINVAL;
1078         if (i != fh->type)
1079                 return -EINVAL;
1080
1081         videobuf_streamoff(&fh->vb_vidq);
1082         res_free(dev,fh);
1083
1084         return (0);
1085 }
1086
1087 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *norm)
1088 {
1089         int rc=0;
1090         struct tm6000_fh   *fh=priv;
1091         struct tm6000_core *dev = fh->dev;
1092
1093         rc=tm6000_set_standard (dev, norm);
1094
1095         fh->width  = dev->width;
1096         fh->height = dev->height;
1097
1098         if (rc<0)
1099                 return rc;
1100
1101         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1102
1103         return 0;
1104 }
1105
1106 static int vidioc_enum_input (struct file *file, void *priv,
1107                                 struct v4l2_input *inp)
1108 {
1109         switch (inp->index) {
1110         case TM6000_INPUT_TV:
1111                 inp->type = V4L2_INPUT_TYPE_TUNER;
1112                 strcpy(inp->name,"Television");
1113                 break;
1114         case TM6000_INPUT_COMPOSITE:
1115                 inp->type = V4L2_INPUT_TYPE_CAMERA;
1116                 strcpy(inp->name,"Composite");
1117                 break;
1118         case TM6000_INPUT_SVIDEO:
1119                 inp->type = V4L2_INPUT_TYPE_CAMERA;
1120                 strcpy(inp->name,"S-Video");
1121                 break;
1122         default:
1123                 return -EINVAL;
1124         }
1125         inp->std = TM6000_STD;
1126
1127         return 0;
1128 }
1129
1130 static int vidioc_g_input (struct file *file, void *priv, unsigned int *i)
1131 {
1132         struct tm6000_fh   *fh=priv;
1133         struct tm6000_core *dev = fh->dev;
1134
1135         *i=dev->input;
1136
1137         return 0;
1138 }
1139 static int vidioc_s_input (struct file *file, void *priv, unsigned int i)
1140 {
1141         struct tm6000_fh   *fh=priv;
1142         struct tm6000_core *dev = fh->dev;
1143         int rc=0;
1144         char buf[1];
1145
1146         switch (i) {
1147         case TM6000_INPUT_TV:
1148                 dev->input=i;
1149                 *buf=0;
1150                 break;
1151         case TM6000_INPUT_COMPOSITE:
1152         case TM6000_INPUT_SVIDEO:
1153                 dev->input=i;
1154                 *buf=1;
1155                 break;
1156         default:
1157                 return -EINVAL;
1158         }
1159         rc=tm6000_read_write_usb (dev, USB_DIR_OUT | USB_TYPE_VENDOR,
1160                                REQ_03_SET_GET_MCU_PIN, 0x03, 1, buf, 1);
1161
1162         if (!rc) {
1163                 dev->input=i;
1164                 rc=vidioc_s_std (file, priv, &dev->vfd->current_norm);
1165         }
1166
1167         return (rc);
1168 }
1169
1170         /* --- controls ---------------------------------------------- */
1171 static int vidioc_queryctrl (struct file *file, void *priv,
1172                                 struct v4l2_queryctrl *qc)
1173 {
1174         int i;
1175
1176         for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1177                 if (qc->id && qc->id == tm6000_qctrl[i].id) {
1178                         memcpy(qc, &(tm6000_qctrl[i]),
1179                                 sizeof(*qc));
1180                         return (0);
1181                 }
1182
1183         return -EINVAL;
1184 }
1185
1186 static int vidioc_g_ctrl (struct file *file, void *priv,
1187                                 struct v4l2_control *ctrl)
1188 {
1189         struct tm6000_fh  *fh=priv;
1190         struct tm6000_core *dev    = fh->dev;
1191         int  val;
1192
1193         /* FIXME: Probably, those won't work! Maybe we need shadow regs */
1194         switch (ctrl->id) {
1195         case V4L2_CID_CONTRAST:
1196                 val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
1197                 break;
1198         case V4L2_CID_BRIGHTNESS:
1199                 val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
1200                 return 0;
1201         case V4L2_CID_SATURATION:
1202                 val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
1203                 return 0;
1204         case V4L2_CID_HUE:
1205                 val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
1206                 return 0;
1207         default:
1208                 return -EINVAL;
1209         }
1210
1211         if (val<0)
1212                 return val;
1213
1214         ctrl->value=val;
1215
1216         return 0;
1217 }
1218 static int vidioc_s_ctrl (struct file *file, void *priv,
1219                                 struct v4l2_control *ctrl)
1220 {
1221         struct tm6000_fh   *fh  =priv;
1222         struct tm6000_core *dev = fh->dev;
1223         u8  val=ctrl->value;
1224
1225         switch (ctrl->id) {
1226         case V4L2_CID_CONTRAST:
1227   tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1228                 return 0;
1229         case V4L2_CID_BRIGHTNESS:
1230   tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1231                 return 0;
1232         case V4L2_CID_SATURATION:
1233   tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1234                 return 0;
1235         case V4L2_CID_HUE:
1236   tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1237                 return 0;
1238         }
1239         return -EINVAL;
1240 }
1241
1242 static int vidioc_g_tuner (struct file *file, void *priv,
1243                                 struct v4l2_tuner *t)
1244 {
1245         struct tm6000_fh   *fh  =priv;
1246         struct tm6000_core *dev = fh->dev;
1247
1248         if (unlikely(UNSET == dev->tuner_type))
1249                 return -EINVAL;
1250         if (0 != t->index)
1251                 return -EINVAL;
1252
1253         strcpy(t->name, "Television");
1254         t->type       = V4L2_TUNER_ANALOG_TV;
1255         t->capability = V4L2_TUNER_CAP_NORM;
1256         t->rangehigh  = 0xffffffffUL;
1257         t->rxsubchans = V4L2_TUNER_SUB_MONO;
1258
1259         return 0;
1260 }
1261
1262 static int vidioc_s_tuner (struct file *file, void *priv,
1263                                 struct v4l2_tuner *t)
1264 {
1265         struct tm6000_fh   *fh  =priv;
1266         struct tm6000_core *dev = fh->dev;
1267
1268         if (UNSET == dev->tuner_type)
1269                 return -EINVAL;
1270         if (0 != t->index)
1271                 return -EINVAL;
1272
1273         return 0;
1274 }
1275
1276 static int vidioc_g_frequency (struct file *file, void *priv,
1277                                 struct v4l2_frequency *f)
1278 {
1279         struct tm6000_fh   *fh  =priv;
1280         struct tm6000_core *dev = fh->dev;
1281
1282         if (unlikely(UNSET == dev->tuner_type))
1283                 return -EINVAL;
1284
1285         f->type = V4L2_TUNER_ANALOG_TV;
1286         f->frequency = dev->freq;
1287
1288         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1289
1290         return 0;
1291 }
1292
1293 static int vidioc_s_frequency (struct file *file, void *priv,
1294                                 struct v4l2_frequency *f)
1295 {
1296         struct tm6000_fh   *fh  =priv;
1297         struct tm6000_core *dev = fh->dev;
1298
1299         if (unlikely(f->type != V4L2_TUNER_ANALOG_TV))
1300                 return -EINVAL;
1301
1302         if (unlikely(UNSET == dev->tuner_type))
1303                 return -EINVAL;
1304         if (unlikely(f->tuner != 0))
1305                 return -EINVAL;
1306
1307 //      mutex_lock(&dev->lock);
1308         dev->freq = f->frequency;
1309         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1310 //      mutex_unlock(&dev->lock);
1311
1312         return 0;
1313 }
1314
1315 /* ------------------------------------------------------------------
1316         File operations for the device
1317    ------------------------------------------------------------------*/
1318
1319 static int tm6000_open(struct file *file)
1320 {
1321         struct video_device *vdev = video_devdata(file);
1322         struct tm6000_core *dev = video_drvdata(file);
1323         struct tm6000_fh *fh;
1324         struct list_head *list;
1325         enum v4l2_buf_type type = 0;
1326         int i,rc;
1327
1328         printk(KERN_INFO "tm6000: open called (dev=%s)\n",
1329                 video_device_node_name(vdev));
1330
1331         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1332                 video_device_node_name(vdev));
1333
1334         list_for_each(list,&tm6000_corelist) {
1335                 h = list_entry(list, struct tm6000_core, tm6000_corelist);
1336                 if (h->vfd->minor == minor) {
1337                         dev  = h;
1338                         type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1339                 }
1340         }
1341         if (NULL == dev)
1342                 return -ENODEV;
1343
1344
1345         /* If more than one user, mutex should be added */
1346         dev->users++;
1347
1348         dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1349                 video_device_node_name(vdev), v4l2_type_names[type],
1350                 dev->users);
1351
1352         /* allocate + initialize per filehandle data */
1353         fh = kzalloc(sizeof(*fh),GFP_KERNEL);
1354         if (NULL == fh) {
1355                 dev->users--;
1356                 return -ENOMEM;
1357         }
1358
1359         file->private_data = fh;
1360         fh->dev      = dev;
1361
1362         fh->type     = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1363         dev->fourcc  = format[0].fourcc;
1364
1365         fh->fmt      = format_by_fourcc(dev->fourcc);
1366
1367         tm6000_get_std_res (dev);
1368
1369         fh->width    = dev->width;
1370         fh->height   = dev->height;
1371
1372         dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1373                                                 "dev->vidq=0x%08lx\n",
1374                 (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq);
1375         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1376                                 "queued=%d\n",list_empty(&dev->vidq.queued));
1377         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1378                                 "active=%d\n",list_empty(&dev->vidq.active));
1379
1380         /* initialize hardware on analog mode */
1381         if (dev->mode!=TM6000_MODE_ANALOG) {
1382                 rc=tm6000_init_analog_mode (dev);
1383                 if (rc<0)
1384                         return rc;
1385
1386                 /* Put all controls at a sane state */
1387                 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1388                         qctl_regs[i] =tm6000_qctrl[i].default_value;
1389
1390                 dev->mode=TM6000_MODE_ANALOG;
1391         }
1392
1393         videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1394                         NULL, &dev->slock,
1395                         fh->type,
1396                         V4L2_FIELD_INTERLACED,
1397                         sizeof(struct tm6000_buffer),fh);
1398
1399         return 0;
1400 }
1401
1402 static ssize_t
1403 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1404 {
1405         struct tm6000_fh        *fh = file->private_data;
1406
1407         if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1408                 if (res_locked(fh->dev))
1409                         return -EBUSY;
1410
1411                 return videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1412                                         file->f_flags & O_NONBLOCK);
1413         }
1414         return 0;
1415 }
1416
1417 static unsigned int
1418 tm6000_poll(struct file *file, struct poll_table_struct *wait)
1419 {
1420         struct tm6000_fh        *fh = file->private_data;
1421         struct tm6000_buffer    *buf;
1422
1423         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1424                 return POLLERR;
1425
1426         if (res_get(fh->dev,fh)) {
1427                 /* streaming capture */
1428                 if (list_empty(&fh->vb_vidq.stream))
1429                         return POLLERR;
1430                 buf = list_entry(fh->vb_vidq.stream.next,struct tm6000_buffer,vb.stream);
1431         } else {
1432                 /* read() capture */
1433                 return videobuf_poll_stream(file, &fh->vb_vidq,
1434                                             wait);
1435         }
1436         poll_wait(file, &buf->vb.done, wait);
1437         if (buf->vb.state == VIDEOBUF_DONE ||
1438             buf->vb.state == VIDEOBUF_ERROR)
1439                 return POLLIN|POLLRDNORM;
1440         return 0;
1441 }
1442
1443 static int tm6000_release(struct file *file)
1444 {
1445         struct tm6000_fh         *fh = file->private_data;
1446         struct tm6000_core      *dev = fh->dev;
1447         struct video_device    *vdev = video_devdata(file);
1448
1449         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1450                 video_device_node_name(vdev), dev->users);
1451
1452         dev->users--;
1453
1454         if (!dev->users) {
1455                 tm6000_uninit_isoc(dev);
1456                 videobuf_mmap_free(&fh->vb_vidq);
1457         }
1458
1459         kfree (fh);
1460
1461         return 0;
1462 }
1463
1464 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1465 {
1466         struct tm6000_fh        *fh = file->private_data;
1467         int ret;
1468
1469         ret=videobuf_mmap_mapper(&fh->vb_vidq, vma);
1470
1471         return ret;
1472 }
1473
1474 static struct v4l2_file_operations tm6000_fops = {
1475         .owner          = THIS_MODULE,
1476         .open           = tm6000_open,
1477         .release        = tm6000_release,
1478         .ioctl          = video_ioctl2, /* V4L2 ioctl handler */
1479         .read           = tm6000_read,
1480         .poll           = tm6000_poll,
1481         .mmap           = tm6000_mmap,
1482 };
1483
1484 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1485         .vidioc_querycap          = vidioc_querycap,
1486         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1487         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1488         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1489         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1490         .vidioc_s_std             = vidioc_s_std,
1491         .vidioc_enum_input        = vidioc_enum_input,
1492         .vidioc_g_input           = vidioc_g_input,
1493         .vidioc_s_input           = vidioc_s_input,
1494         .vidioc_queryctrl         = vidioc_queryctrl,
1495         .vidioc_g_ctrl            = vidioc_g_ctrl,
1496         .vidioc_s_ctrl            = vidioc_s_ctrl,
1497         .vidioc_g_tuner           = vidioc_g_tuner,
1498         .vidioc_s_tuner           = vidioc_s_tuner,
1499         .vidioc_g_frequency       = vidioc_g_frequency,
1500         .vidioc_s_frequency       = vidioc_s_frequency,
1501         .vidioc_streamon          = vidioc_streamon,
1502         .vidioc_streamoff         = vidioc_streamoff,
1503         .vidioc_reqbufs           = vidioc_reqbufs,
1504         .vidioc_querybuf          = vidioc_querybuf,
1505         .vidioc_qbuf              = vidioc_qbuf,
1506         .vidioc_dqbuf             = vidioc_dqbuf,
1507 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1508         .vidiocgmbuf              = vidiocgmbuf,
1509 #endif
1510 };
1511
1512 static struct video_device tm6000_template = {
1513         .name           = "tm6000",
1514         .fops           = &tm6000_fops,
1515         .ioctl_ops      = &video_ioctl_ops,
1516         .release        = video_device_release,
1517         .tvnorms        = TM6000_STD,
1518         .current_norm   = V4L2_STD_NTSC_M,
1519 };
1520
1521 /* -----------------------------------------------------------------
1522         Initialization and module stuff
1523    ------------------------------------------------------------------*/
1524
1525 int tm6000_v4l2_register(struct tm6000_core *dev)
1526 {
1527         int ret = -1;
1528         struct video_device *vfd;
1529
1530         vfd = video_device_alloc();
1531         if(!vfd) {
1532                 return -ENOMEM;
1533         }
1534         dev->vfd = vfd;
1535
1536         list_add_tail(&dev->tm6000_corelist,&tm6000_corelist);
1537
1538         /* init video dma queues */
1539         INIT_LIST_HEAD(&dev->vidq.active);
1540         INIT_LIST_HEAD(&dev->vidq.queued);
1541
1542         memcpy (dev->vfd, &tm6000_template, sizeof(*(dev->vfd)));
1543         dev->vfd->debug=tm6000_debug;
1544         vfd->v4l2_dev = &dev->v4l2_dev;
1545
1546         ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1547         printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1548         return ret;
1549 }
1550
1551 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1552 {
1553         struct tm6000_core *h;
1554         struct list_head *pos, *tmp;
1555
1556         video_unregister_device(dev->vfd);
1557
1558         list_for_each_safe(pos, tmp, &tm6000_corelist) {
1559                 h = list_entry(pos, struct tm6000_core, tm6000_corelist);
1560                 if (h == dev) {
1561                         list_del(pos);
1562                 }
1563         }
1564
1565         return 0;
1566 }
1567
1568 int tm6000_v4l2_exit(void)
1569 {
1570         return 0;
1571 }
1572
1573 module_param(video_nr, int, 0);
1574 MODULE_PARM_DESC(video_nr,"Allow changing video device number");
1575
1576 module_param_named (debug, tm6000_debug, int, 0444);
1577 MODULE_PARM_DESC(debug,"activates debug info");
1578
1579 module_param(vid_limit,int,0644);
1580 MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes");
1581