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