drivers/media/usb/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
  23 #include <linux/module.h>
  24 #include <linux/delay.h>
  25 #include <linux/errno.h>
  26 #include <linux/fs.h>
  27 #include <linux/kernel.h>
  28 #include <linux/slab.h>
  29 #include <linux/mm.h>
  30 #include <linux/ioport.h>
  31 #include <linux/init.h>
  32 #include <linux/sched.h>
  33 #include <linux/random.h>
  34 #include <linux/usb.h>
  35 #include <linux/videodev2.h>
  36 #include <media/v4l2-ioctl.h>
  37 #include <media/v4l2-event.h>
  38 #include <media/tuner.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/kthread.h>
  41 #include <linux/highmem.h>
  42 #include <linux/freezer.h>
  43
  44 #include "tm6000-regs.h"
  45 #include "tm6000.h"
  46
  47 #define BUFFER_TIMEOUT     msecs_to_jiffies(2000)  /* 2 seconds */
  48
  49 /* Limits minimum and default number of buffers */
  50 #define TM6000_MIN_BUF 4
  51 #define TM6000_DEF_BUF 8
  52
  53 #define TM6000_NUM_URB_BUF 8
  54
  55 #define TM6000_MAX_ISO_PACKETS  46      /* Max number of ISO packets */
  56
  57 /* Declare static vars that will be used as parameters */
  58 static unsigned int vid_limit = 16;     /* Video memory limit, in Mb */
  59 static int video_nr = -1;               /* /dev/videoN, -1 for autodetect */
  60 static int radio_nr = -1;               /* /dev/radioN, -1 for autodetect */
  61 static bool keep_urb;                   /* keep urb buffers allocated */
  62
  63 /* Debug level */
  64 int tm6000_debug;
  65 EXPORT_SYMBOL_GPL(tm6000_debug);
  66
  67 static struct tm6000_fmt format[] = {
  68         {
  69                 .name     = "4:2:2, packed, YVY2",
  70                 .fourcc   = V4L2_PIX_FMT_YUYV,
  71                 .depth    = 16,
  72         }, {
  73                 .name     = "4:2:2, packed, UYVY",
  74                 .fourcc   = V4L2_PIX_FMT_UYVY,
  75                 .depth    = 16,
  76         }, {
  77                 .name     = "A/V + VBI mux packet",
  78                 .fourcc   = V4L2_PIX_FMT_TM6000,
  79                 .depth    = 16,
  80         }
  81 };
  82
  83 /* ------------------------------------------------------------------
  84  *      DMA and thread functions
  85  * ------------------------------------------------------------------
  86  */
  87
  88 #define norm_maxw(a) 720
  89 #define norm_maxh(a) 576
  90
  91 #define norm_minw(a) norm_maxw(a)
  92 #define norm_minh(a) norm_maxh(a)
  93
  94 /*
  95  * video-buf generic routine to get the next available buffer
  96  */
  97 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
  98                                struct tm6000_buffer   **buf)
  99 {
 100         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 101
 102         if (list_empty(&dma_q->active)) {
 103                 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
 104                 *buf = NULL;
 105                 return;
 106         }
 107
 108         *buf = list_entry(dma_q->active.next,
 109                         struct tm6000_buffer, vb.queue);
 110 }
 111
 112 /*
 113  * Announces that a buffer were filled and request the next
 114  */
 115 static inline void buffer_filled(struct tm6000_core *dev,
 116                                  struct tm6000_dmaqueue *dma_q,
 117                                  struct tm6000_buffer *buf)
 118 {
 119         /* Advice that buffer was filled */
 120         dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
 121         buf->vb.state = VIDEOBUF_DONE;
 122         buf->vb.field_count++;
 123         v4l2_get_timestamp(&buf->vb.ts);
 124
 125         list_del(&buf->vb.queue);
 126         wake_up(&buf->vb.done);
 127 }
 128
 129 /*
 130  * Identify the tm5600/6000 buffer header type and properly handles
 131  */
 132 static int copy_streams(u8 *data, unsigned long len,
 133                         struct urb *urb)
 134 {
 135         struct tm6000_dmaqueue  *dma_q = urb->context;
 136         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 137         u8 *ptr = data, *endp = data+len;
 138         unsigned long header = 0;
 139         int rc = 0;
 140         unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
 141         struct tm6000_buffer *vbuf = NULL;
 142         char *voutp = NULL;
 143         unsigned int linewidth;
 144
 145         if (!dev->radio) {
 146                 /* get video buffer */
 147                 get_next_buf(dma_q, &vbuf);
 148
 149                 if (!vbuf)
 150                         return rc;
 151                 voutp = videobuf_to_vmalloc(&vbuf->vb);
 152
 153                 if (!voutp)
 154                         return 0;
 155         }
 156
 157         for (ptr = data; ptr < endp;) {
 158                 if (!dev->isoc_ctl.cmd) {
 159                         /* Header */
 160                         if (dev->isoc_ctl.tmp_buf_len > 0) {
 161                                 /* from last urb or packet */
 162                                 header = dev->isoc_ctl.tmp_buf;
 163                                 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
 164                                         memcpy((u8 *)&header +
 165                                                 dev->isoc_ctl.tmp_buf_len,
 166                                                 ptr,
 167                                                 4 - dev->isoc_ctl.tmp_buf_len);
 168                                         ptr += 4 - dev->isoc_ctl.tmp_buf_len;
 169                                 }
 170                                 dev->isoc_ctl.tmp_buf_len = 0;
 171                         } else {
 172                                 if (ptr + 3 >= endp) {
 173                                         /* have incomplete header */
 174                                         dev->isoc_ctl.tmp_buf_len = endp - ptr;
 175                                         memcpy(&dev->isoc_ctl.tmp_buf, ptr,
 176                                                 dev->isoc_ctl.tmp_buf_len);
 177                                         return rc;
 178                                 }
 179                                 /* Seek for sync */
 180                                 for (; ptr < endp - 3; ptr++) {
 181                                         if (*(ptr + 3) == 0x47)
 182                                                 break;
 183                                 }
 184                                 /* Get message header */
 185                                 header = *(unsigned long *)ptr;
 186                                 ptr += 4;
 187                         }
 188
 189                         /* split the header fields */
 190                         size = ((header & 0x7e) << 1);
 191                         if (size > 0)
 192                                 size -= 4;
 193                         block = (header >> 7) & 0xf;
 194                         field = (header >> 11) & 0x1;
 195                         line  = (header >> 12) & 0x1ff;
 196                         cmd   = (header >> 21) & 0x7;
 197                         /* Validates haeder fields */
 198                         if (size > TM6000_URB_MSG_LEN)
 199                                 size = TM6000_URB_MSG_LEN;
 200                         pktsize = TM6000_URB_MSG_LEN;
 201                         /*
 202                          * calculate position in buffer and change the buffer
 203                          */
 204                         switch (cmd) {
 205                         case TM6000_URB_MSG_VIDEO:
 206                                 if (!dev->radio) {
 207                                         if ((dev->isoc_ctl.vfield != field) &&
 208                                                 (field == 1)) {
 209                                                 /*
 210                                                  * Announces that a new buffer
 211                                                  * were filled
 212                                                  */
 213                                                 buffer_filled(dev, dma_q, vbuf);
 214                                                 dprintk(dev, V4L2_DEBUG_ISOC,
 215                                                         "new buffer filled\n");
 216                                                 get_next_buf(dma_q, &vbuf);
 217                                                 if (!vbuf)
 218                                                         return rc;
 219                                                 voutp = videobuf_to_vmalloc(&vbuf->vb);
 220                                                 if (!voutp)
 221                                                         return rc;
 222                                                 memset(voutp, 0, vbuf->vb.size);
 223                                         }
 224                                         linewidth = vbuf->vb.width << 1;
 225                                         pos = ((line << 1) - field - 1) *
 226                                         linewidth + block * TM6000_URB_MSG_LEN;
 227                                         /* Don't allow to write out of the buffer */
 228                                         if (pos + size > vbuf->vb.size)
 229                                                 cmd = TM6000_URB_MSG_ERR;
 230                                         dev->isoc_ctl.vfield = field;
 231                                 }
 232                                 break;
 233                         case TM6000_URB_MSG_VBI:
 234                                 break;
 235                         case TM6000_URB_MSG_AUDIO:
 236                         case TM6000_URB_MSG_PTS:
 237                                 size = pktsize; /* Size is always 180 bytes */
 238                                 break;
 239                         }
 240                 } else {
 241                         /* Continue the last copy */
 242                         cmd = dev->isoc_ctl.cmd;
 243                         size = dev->isoc_ctl.size;
 244                         pos = dev->isoc_ctl.pos;
 245                         pktsize = dev->isoc_ctl.pktsize;
 246                         field = dev->isoc_ctl.field;
 247                 }
 248                 cpysize = (endp - ptr > size) ? size : endp - ptr;
 249                 if (cpysize) {
 250                         /* copy data in different buffers */
 251                         switch (cmd) {
 252                         case TM6000_URB_MSG_VIDEO:
 253                                 /* Fills video buffer */
 254                                 if (vbuf)
 255                                         memcpy(&voutp[pos], ptr, cpysize);
 256                                 break;
 257                         case TM6000_URB_MSG_AUDIO: {
 258                                 int i;
 259                                 for (i = 0; i < cpysize; i += 2)
 260                                         swab16s((u16 *)(ptr + i));
 261
 262                                 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
 263                                 break;
 264                         }
 265                         case TM6000_URB_MSG_VBI:
 266                                 /* Need some code to copy vbi buffer */
 267                                 break;
 268                         case TM6000_URB_MSG_PTS: {
 269                                 /* Need some code to copy pts */
 270                                 u32 pts;
 271                                 pts = *(u32 *)ptr;
 272                                 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
 273                                         field, pts);
 274                                 break;
 275                         }
 276                         }
 277                 }
 278                 if (ptr + pktsize > endp) {
 279                         /*
 280                          * End of URB packet, but cmd processing is not
 281                          * complete. Preserve the state for a next packet
 282                          */
 283                         dev->isoc_ctl.pos = pos + cpysize;
 284                         dev->isoc_ctl.size = size - cpysize;
 285                         dev->isoc_ctl.cmd = cmd;
 286                         dev->isoc_ctl.field = field;
 287                         dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
 288                         ptr += endp - ptr;
 289                 } else {
 290                         dev->isoc_ctl.cmd = 0;
 291                         ptr += pktsize;
 292                 }
 293         }
 294         return 0;
 295 }
 296
 297 /*
 298  * Identify the tm5600/6000 buffer header type and properly handles
 299  */
 300 static int copy_multiplexed(u8 *ptr, unsigned long len,
 301                         struct urb *urb)
 302 {
 303         struct tm6000_dmaqueue  *dma_q = urb->context;
 304         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 305         unsigned int pos = dev->isoc_ctl.pos, cpysize;
 306         int rc = 1;
 307         struct tm6000_buffer *buf;
 308         char *outp = NULL;
 309
 310         get_next_buf(dma_q, &buf);
 311         if (buf)
 312                 outp = videobuf_to_vmalloc(&buf->vb);
 313
 314         if (!outp)
 315                 return 0;
 316
 317         while (len > 0) {
 318                 cpysize = min(len, buf->vb.size-pos);
 319                 memcpy(&outp[pos], ptr, cpysize);
 320                 pos += cpysize;
 321                 ptr += cpysize;
 322                 len -= cpysize;
 323                 if (pos >= buf->vb.size) {
 324                         pos = 0;
 325                         /* Announces that a new buffer were filled */
 326                         buffer_filled(dev, dma_q, buf);
 327                         dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
 328                         get_next_buf(dma_q, &buf);
 329                         if (!buf)
 330                                 break;
 331                         outp = videobuf_to_vmalloc(&(buf->vb));
 332                         if (!outp)
 333                                 return rc;
 334                         pos = 0;
 335                 }
 336         }
 337
 338         dev->isoc_ctl.pos = pos;
 339         return rc;
 340 }
 341
 342 static inline void print_err_status(struct tm6000_core *dev,
 343                                      int packet, int status)
 344 {
 345         char *errmsg = "Unknown";
 346
 347         switch (status) {
 348         case -ENOENT:
 349                 errmsg = "unlinked synchronuously";
 350                 break;
 351         case -ECONNRESET:
 352                 errmsg = "unlinked asynchronuously";
 353                 break;
 354         case -ENOSR:
 355                 errmsg = "Buffer error (overrun)";
 356                 break;
 357         case -EPIPE:
 358                 errmsg = "Stalled (device not responding)";
 359                 break;
 360         case -EOVERFLOW:
 361                 errmsg = "Babble (bad cable?)";
 362                 break;
 363         case -EPROTO:
 364                 errmsg = "Bit-stuff error (bad cable?)";
 365                 break;
 366         case -EILSEQ:
 367                 errmsg = "CRC/Timeout (could be anything)";
 368                 break;
 369         case -ETIME:
 370                 errmsg = "Device does not respond";
 371                 break;
 372         }
 373         if (packet < 0) {
 374                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
 375                         status, errmsg);
 376         } else {
 377                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
 378                         packet, status, errmsg);
 379         }
 380 }
 381
 382
 383 /*
 384  * Controls the isoc copy of each urb packet
 385  */
 386 static inline int tm6000_isoc_copy(struct urb *urb)
 387 {
 388         struct tm6000_dmaqueue  *dma_q = urb->context;
 389         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 390         int i, len = 0, rc = 1, status;
 391         char *p;
 392
 393         if (urb->status < 0) {
 394                 print_err_status(dev, -1, urb->status);
 395                 return 0;
 396         }
 397
 398         for (i = 0; i < urb->number_of_packets; i++) {
 399                 status = urb->iso_frame_desc[i].status;
 400
 401                 if (status < 0) {
 402                         print_err_status(dev, i, status);
 403                         continue;
 404                 }
 405
 406                 len = urb->iso_frame_desc[i].actual_length;
 407
 408                 if (len > 0) {
 409                         p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 410                         if (!urb->iso_frame_desc[i].status) {
 411                                 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
 412                                         rc = copy_multiplexed(p, len, urb);
 413                                         if (rc <= 0)
 414                                                 return rc;
 415                                 } else {
 416                                         copy_streams(p, len, urb);
 417                                 }
 418                         }
 419                 }
 420         }
 421         return rc;
 422 }
 423
 424 /* ------------------------------------------------------------------
 425  *      URB control
 426  * ------------------------------------------------------------------
 427  */
 428
 429 /*
 430  * IRQ callback, called by URB callback
 431  */
 432 static void tm6000_irq_callback(struct urb *urb)
 433 {
 434         struct tm6000_dmaqueue  *dma_q = urb->context;
 435         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 436         int i;
 437
 438         switch (urb->status) {
 439         case 0:
 440         case -ETIMEDOUT:
 441                 break;
 442
 443         case -ECONNRESET:
 444         case -ENOENT:
 445         case -ESHUTDOWN:
 446                 return;
 447
 448         default:
 449                 tm6000_err("urb completion error %d.\n", urb->status);
 450                 break;
 451         }
 452
 453         spin_lock(&dev->slock);
 454         tm6000_isoc_copy(urb);
 455         spin_unlock(&dev->slock);
 456
 457         /* Reset urb buffers */
 458         for (i = 0; i < urb->number_of_packets; i++) {
 459                 urb->iso_frame_desc[i].status = 0;
 460                 urb->iso_frame_desc[i].actual_length = 0;
 461         }
 462
 463         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 464         if (urb->status)
 465                 tm6000_err("urb resubmit failed (error=%i)\n",
 466                         urb->status);
 467 }
 468
 469 /*
 470  * Allocate URB buffers
 471  */
 472 static int tm6000_alloc_urb_buffers(struct tm6000_core *dev)
 473 {
 474         int num_bufs = TM6000_NUM_URB_BUF;
 475         int i;
 476
 477         if (dev->urb_buffer != NULL)
 478                 return 0;
 479
 480         dev->urb_buffer = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 481         if (!dev->urb_buffer) {
 482                 tm6000_err("cannot allocate memory for urb buffers\n");
 483                 return -ENOMEM;
 484         }
 485
 486         dev->urb_dma = kmalloc(sizeof(dma_addr_t *)*num_bufs, GFP_KERNEL);
 487         if (!dev->urb_dma) {
 488                 tm6000_err("cannot allocate memory for urb dma pointers\n");
 489                 return -ENOMEM;
 490         }
 491
 492         for (i = 0; i < num_bufs; i++) {
 493                 dev->urb_buffer[i] = usb_alloc_coherent(
 494                                         dev->udev, dev->urb_size,
 495                                         GFP_KERNEL, &dev->urb_dma[i]);
 496                 if (!dev->urb_buffer[i]) {
 497                         tm6000_err("unable to allocate %i bytes for transfer buffer %i\n",
 498                                     dev->urb_size, i);
 499                         return -ENOMEM;
 500                 }
 501                 memset(dev->urb_buffer[i], 0, dev->urb_size);
 502         }
 503
 504         return 0;
 505 }
 506
 507 /*
 508  * Free URB buffers
 509  */
 510 static int tm6000_free_urb_buffers(struct tm6000_core *dev)
 511 {
 512         int i;
 513
 514         if (dev->urb_buffer == NULL)
 515                 return 0;
 516
 517         for (i = 0; i < TM6000_NUM_URB_BUF; i++) {
 518                 if (dev->urb_buffer[i]) {
 519                         usb_free_coherent(dev->udev,
 520                                         dev->urb_size,
 521                                         dev->urb_buffer[i],
 522                                         dev->urb_dma[i]);
 523                         dev->urb_buffer[i] = NULL;
 524                 }
 525         }
 526         kfree(dev->urb_buffer);
 527         kfree(dev->urb_dma);
 528         dev->urb_buffer = NULL;
 529         dev->urb_dma = NULL;
 530
 531         return 0;
 532 }
 533
 534 /*
 535  * Stop and Deallocate URBs
 536  */
 537 static void tm6000_uninit_isoc(struct tm6000_core *dev)
 538 {
 539         struct urb *urb;
 540         int i;
 541
 542         dev->isoc_ctl.buf = NULL;
 543         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 544                 urb = dev->isoc_ctl.urb[i];
 545                 if (urb) {
 546                         usb_kill_urb(urb);
 547                         usb_unlink_urb(urb);
 548                         usb_free_urb(urb);
 549                         dev->isoc_ctl.urb[i] = NULL;
 550                 }
 551                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 552         }
 553
 554         if (!keep_urb)
 555                 tm6000_free_urb_buffers(dev);
 556
 557         kfree(dev->isoc_ctl.urb);
 558         kfree(dev->isoc_ctl.transfer_buffer);
 559
 560         dev->isoc_ctl.urb = NULL;
 561         dev->isoc_ctl.transfer_buffer = NULL;
 562         dev->isoc_ctl.num_bufs = 0;
 563 }
 564
 565 /*
 566  * Assign URBs and start IRQ
 567  */
 568 static int tm6000_prepare_isoc(struct tm6000_core *dev)
 569 {
 570         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 571         int i, j, sb_size, pipe, size, max_packets;
 572         int num_bufs = TM6000_NUM_URB_BUF;
 573         struct urb *urb;
 574
 575         /* De-allocates all pending stuff */
 576         tm6000_uninit_isoc(dev);
 577         /* Stop interrupt USB pipe */
 578         tm6000_ir_int_stop(dev);
 579
 580         usb_set_interface(dev->udev,
 581                           dev->isoc_in.bInterfaceNumber,
 582                           dev->isoc_in.bAlternateSetting);
 583
 584         /* Start interrupt USB pipe */
 585         tm6000_ir_int_start(dev);
 586
 587         pipe = usb_rcvisocpipe(dev->udev,
 588                                dev->isoc_in.endp->desc.bEndpointAddress &
 589                                USB_ENDPOINT_NUMBER_MASK);
 590
 591         size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
 592
 593         if (size > dev->isoc_in.maxsize)
 594                 size = dev->isoc_in.maxsize;
 595
 596         dev->isoc_ctl.max_pkt_size = size;
 597
 598         max_packets = TM6000_MAX_ISO_PACKETS;
 599         sb_size = max_packets * size;
 600         dev->urb_size = sb_size;
 601
 602         dev->isoc_ctl.num_bufs = num_bufs;
 603
 604         dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 605         if (!dev->isoc_ctl.urb) {
 606                 tm6000_err("cannot alloc memory for usb buffers\n");
 607                 return -ENOMEM;
 608         }
 609
 610         dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
 611                                    GFP_KERNEL);
 612         if (!dev->isoc_ctl.transfer_buffer) {
 613                 tm6000_err("cannot allocate memory for usbtransfer\n");
 614                 kfree(dev->isoc_ctl.urb);
 615                 return -ENOMEM;
 616         }
 617
 618         dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
 619                     " (%d bytes) of %d bytes each to handle %u size\n",
 620                     max_packets, num_bufs, sb_size,
 621                     dev->isoc_in.maxsize, size);
 622
 623
 624         if (!dev->urb_buffer && tm6000_alloc_urb_buffers(dev) < 0) {
 625                 tm6000_err("cannot allocate memory for urb buffers\n");
 626
 627                 /* call free, as some buffers might have been allocated */
 628                 tm6000_free_urb_buffers(dev);
 629                 kfree(dev->isoc_ctl.urb);
 630                 kfree(dev->isoc_ctl.transfer_buffer);
 631                 return -ENOMEM;
 632         }
 633
 634         /* allocate urbs and transfer buffers */
 635         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 636                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 637                 if (!urb) {
 638                         tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
 639                         tm6000_uninit_isoc(dev);
 640                         usb_free_urb(urb);
 641                         return -ENOMEM;
 642                 }
 643                 dev->isoc_ctl.urb[i] = urb;
 644
 645                 urb->transfer_dma = dev->urb_dma[i];
 646                 dev->isoc_ctl.transfer_buffer[i] = dev->urb_buffer[i];
 647
 648                 usb_fill_bulk_urb(urb, dev->udev, pipe,
 649                                   dev->isoc_ctl.transfer_buffer[i], sb_size,
 650                                   tm6000_irq_callback, dma_q);
 651                 urb->interval = dev->isoc_in.endp->desc.bInterval;
 652                 urb->number_of_packets = max_packets;
 653                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 654
 655                 for (j = 0; j < max_packets; j++) {
 656                         urb->iso_frame_desc[j].offset = size * j;
 657                         urb->iso_frame_desc[j].length = size;
 658                 }
 659         }
 660
 661         return 0;
 662 }
 663
 664 static int tm6000_start_thread(struct tm6000_core *dev)
 665 {
 666         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 667         int i;
 668
 669         dma_q->frame = 0;
 670         dma_q->ini_jiffies = jiffies;
 671
 672         init_waitqueue_head(&dma_q->wq);
 673
 674         /* submit urbs and enables IRQ */
 675         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 676                 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 677                 if (rc) {
 678                         tm6000_err("submit of urb %i failed (error=%i)\n", i,
 679                                    rc);
 680                         tm6000_uninit_isoc(dev);
 681                         return rc;
 682                 }
 683         }
 684
 685         return 0;
 686 }
 687
 688 /* ------------------------------------------------------------------
 689  *      Videobuf operations
 690  * ------------------------------------------------------------------
 691  */
 692
 693 static int
 694 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 695 {
 696         struct tm6000_fh *fh = vq->priv_data;
 697
 698         *size = fh->fmt->depth * fh->width * fh->height >> 3;
 699         if (0 == *count)
 700                 *count = TM6000_DEF_BUF;
 701
 702         if (*count < TM6000_MIN_BUF)
 703                 *count = TM6000_MIN_BUF;
 704
 705         while (*size * *count > vid_limit * 1024 * 1024)
 706                 (*count)--;
 707
 708         return 0;
 709 }
 710
 711 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
 712 {
 713         struct tm6000_fh *fh = vq->priv_data;
 714         struct tm6000_core   *dev = fh->dev;
 715         unsigned long flags;
 716
 717         if (in_interrupt())
 718                 BUG();
 719
 720         /* We used to wait for the buffer to finish here, but this didn't work
 721            because, as we were keeping the state as VIDEOBUF_QUEUED,
 722            videobuf_queue_cancel marked it as finished for us.
 723            (Also, it could wedge forever if the hardware was misconfigured.)
 724
 725            This should be safe; by the time we get here, the buffer isn't
 726            queued anymore. If we ever start marking the buffers as
 727            VIDEOBUF_ACTIVE, it won't be, though.
 728         */
 729         spin_lock_irqsave(&dev->slock, flags);
 730         if (dev->isoc_ctl.buf == buf)
 731                 dev->isoc_ctl.buf = NULL;
 732         spin_unlock_irqrestore(&dev->slock, flags);
 733
 734         videobuf_vmalloc_free(&buf->vb);
 735         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 736 }
 737
 738 static int
 739 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 740                                                 enum v4l2_field field)
 741 {
 742         struct tm6000_fh     *fh  = vq->priv_data;
 743         struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
 744         struct tm6000_core   *dev = fh->dev;
 745         int rc = 0;
 746
 747         BUG_ON(NULL == fh->fmt);
 748
 749
 750         /* FIXME: It assumes depth=2 */
 751         /* The only currently supported format is 16 bits/pixel */
 752         buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
 753         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 754                 return -EINVAL;
 755
 756         if (buf->fmt       != fh->fmt    ||
 757             buf->vb.width  != fh->width  ||
 758             buf->vb.height != fh->height ||
 759             buf->vb.field  != field) {
 760                 buf->fmt       = fh->fmt;
 761                 buf->vb.width  = fh->width;
 762                 buf->vb.height = fh->height;
 763                 buf->vb.field  = field;
 764                 buf->vb.state = VIDEOBUF_NEEDS_INIT;
 765         }
 766
 767         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 768                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 769                 if (rc != 0)
 770                         goto fail;
 771         }
 772
 773         if (!dev->isoc_ctl.num_bufs) {
 774                 rc = tm6000_prepare_isoc(dev);
 775                 if (rc < 0)
 776                         goto fail;
 777
 778                 rc = tm6000_start_thread(dev);
 779                 if (rc < 0)
 780                         goto fail;
 781
 782         }
 783
 784         buf->vb.state = VIDEOBUF_PREPARED;
 785         return 0;
 786
 787 fail:
 788         free_buffer(vq, buf);
 789         return rc;
 790 }
 791
 792 static void
 793 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 794 {
 795         struct tm6000_buffer    *buf     = container_of(vb, struct tm6000_buffer, vb);
 796         struct tm6000_fh        *fh      = vq->priv_data;
 797         struct tm6000_core      *dev     = fh->dev;
 798         struct tm6000_dmaqueue  *vidq    = &dev->vidq;
 799
 800         buf->vb.state = VIDEOBUF_QUEUED;
 801         list_add_tail(&buf->vb.queue, &vidq->active);
 802 }
 803
 804 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 805 {
 806         struct tm6000_buffer   *buf  = container_of(vb, struct tm6000_buffer, vb);
 807
 808         free_buffer(vq, buf);
 809 }
 810
 811 static struct videobuf_queue_ops tm6000_video_qops = {
 812         .buf_setup      = buffer_setup,
 813         .buf_prepare    = buffer_prepare,
 814         .buf_queue      = buffer_queue,
 815         .buf_release    = buffer_release,
 816 };
 817
 818 /* ------------------------------------------------------------------
 819  *      IOCTL handling
 820  * ------------------------------------------------------------------
 821  */
 822
 823 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
 824 {
 825         /* Is the current fh handling it? if so, that's OK */
 826         if (dev->resources == fh && dev->is_res_read)
 827                 return true;
 828
 829         return false;
 830 }
 831
 832 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
 833 {
 834         /* Is the current fh handling it? if so, that's OK */
 835         if (dev->resources == fh)
 836                 return true;
 837
 838         return false;
 839 }
 840
 841 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
 842                    bool is_res_read)
 843 {
 844         /* Is the current fh handling it? if so, that's OK */
 845         if (dev->resources == fh && dev->is_res_read == is_res_read)
 846                 return true;
 847
 848         /* is it free? */
 849         if (dev->resources)
 850                 return false;
 851
 852         /* grab it */
 853         dev->resources = fh;
 854         dev->is_res_read = is_res_read;
 855         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
 856         return true;
 857 }
 858
 859 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
 860 {
 861         /* Is the current fh handling it? if so, that's OK */
 862         if (dev->resources != fh)
 863                 return;
 864
 865         dev->resources = NULL;
 866         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
 867 }
 868
 869 /* ------------------------------------------------------------------
 870  *      IOCTL vidioc handling
 871  * ------------------------------------------------------------------
 872  */
 873 static int vidioc_querycap(struct file *file, void  *priv,
 874                                         struct v4l2_capability *cap)
 875 {
 876         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 877         struct video_device *vdev = video_devdata(file);
 878
 879         strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
 880         strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
 881         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
 882         if (dev->tuner_type != TUNER_ABSENT)
 883                 cap->device_caps |= V4L2_CAP_TUNER;
 884         if (vdev->vfl_type == VFL_TYPE_GRABBER)
 885                 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
 886                                 V4L2_CAP_STREAMING |
 887                                 V4L2_CAP_READWRITE;
 888         else
 889                 cap->device_caps |= V4L2_CAP_RADIO;
 890         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
 891                 V4L2_CAP_RADIO | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
 892
 893         return 0;
 894 }
 895
 896 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 897                                         struct v4l2_fmtdesc *f)
 898 {
 899         if (f->index >= ARRAY_SIZE(format))
 900                 return -EINVAL;
 901
 902         strlcpy(f->description, format[f->index].name, sizeof(f->description));
 903         f->pixelformat = format[f->index].fourcc;
 904         return 0;
 905 }
 906
 907 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 908                                         struct v4l2_format *f)
 909 {
 910         struct tm6000_fh  *fh = priv;
 911
 912         f->fmt.pix.width        = fh->width;
 913         f->fmt.pix.height       = fh->height;
 914         f->fmt.pix.field        = fh->vb_vidq.field;
 915         f->fmt.pix.pixelformat  = fh->fmt->fourcc;
 916         f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
 917         f->fmt.pix.bytesperline =
 918                 (f->fmt.pix.width * fh->fmt->depth) >> 3;
 919         f->fmt.pix.sizeimage =
 920                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 921         f->fmt.pix.priv = 0;
 922
 923         return 0;
 924 }
 925
 926 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
 927 {
 928         unsigned int i;
 929
 930         for (i = 0; i < ARRAY_SIZE(format); i++)
 931                 if (format[i].fourcc == fourcc)
 932                         return format+i;
 933         return NULL;
 934 }
 935
 936 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 937                         struct v4l2_format *f)
 938 {
 939         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 940         struct tm6000_fmt *fmt;
 941         enum v4l2_field field;
 942
 943         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 944         if (NULL == fmt) {
 945                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
 946                                 " invalid.\n", f->fmt.pix.pixelformat);
 947                 return -EINVAL;
 948         }
 949
 950         field = f->fmt.pix.field;
 951
 952         field = V4L2_FIELD_INTERLACED;
 953
 954         tm6000_get_std_res(dev);
 955
 956         f->fmt.pix.width  = dev->width;
 957         f->fmt.pix.height = dev->height;
 958
 959         f->fmt.pix.width &= ~0x01;
 960
 961         f->fmt.pix.field = field;
 962         f->fmt.pix.priv = 0;
 963
 964         f->fmt.pix.bytesperline =
 965                 (f->fmt.pix.width * fmt->depth) >> 3;
 966         f->fmt.pix.sizeimage =
 967                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 968         f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
 969
 970         return 0;
 971 }
 972
 973 /*FIXME: This seems to be generic enough to be at videodev2 */
 974 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 975                                         struct v4l2_format *f)
 976 {
 977         struct tm6000_fh  *fh = priv;
 978         struct tm6000_core *dev = fh->dev;
 979         int ret = vidioc_try_fmt_vid_cap(file, fh, f);
 980         if (ret < 0)
 981                 return ret;
 982
 983         fh->fmt           = format_by_fourcc(f->fmt.pix.pixelformat);
 984         fh->width         = f->fmt.pix.width;
 985         fh->height        = f->fmt.pix.height;
 986         fh->vb_vidq.field = f->fmt.pix.field;
 987         fh->type          = f->type;
 988
 989         dev->fourcc       = f->fmt.pix.pixelformat;
 990
 991         tm6000_set_fourcc_format(dev);
 992
 993         return 0;
 994 }
 995
 996 static int vidioc_reqbufs(struct file *file, void *priv,
 997                            struct v4l2_requestbuffers *p)
 998 {
 999         struct tm6000_fh  *fh = priv;
1000
1001         return videobuf_reqbufs(&fh->vb_vidq, p);
1002 }
1003
1004 static int vidioc_querybuf(struct file *file, void *priv,
1005                             struct v4l2_buffer *p)
1006 {
1007         struct tm6000_fh  *fh = priv;
1008
1009         return videobuf_querybuf(&fh->vb_vidq, p);
1010 }
1011
1012 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1013 {
1014         struct tm6000_fh  *fh = priv;
1015
1016         return videobuf_qbuf(&fh->vb_vidq, p);
1017 }
1018
1019 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1020 {
1021         struct tm6000_fh  *fh = priv;
1022
1023         return videobuf_dqbuf(&fh->vb_vidq, p,
1024                                 file->f_flags & O_NONBLOCK);
1025 }
1026
1027 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1028 {
1029         struct tm6000_fh *fh = priv;
1030         struct tm6000_core *dev = fh->dev;
1031
1032         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1033                 return -EINVAL;
1034         if (i != fh->type)
1035                 return -EINVAL;
1036
1037         if (!res_get(dev, fh, false))
1038                 return -EBUSY;
1039         return videobuf_streamon(&fh->vb_vidq);
1040 }
1041
1042 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1043 {
1044         struct tm6000_fh *fh = priv;
1045         struct tm6000_core *dev = fh->dev;
1046
1047         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1048                 return -EINVAL;
1049
1050         if (i != fh->type)
1051                 return -EINVAL;
1052
1053         videobuf_streamoff(&fh->vb_vidq);
1054         res_free(dev, fh);
1055
1056         return 0;
1057 }
1058
1059 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1060 {
1061         int rc = 0;
1062         struct tm6000_fh *fh = priv;
1063         struct tm6000_core *dev = fh->dev;
1064
1065         dev->norm = norm;
1066         rc = tm6000_init_analog_mode(dev);
1067
1068         fh->width  = dev->width;
1069         fh->height = dev->height;
1070
1071         if (rc < 0)
1072                 return rc;
1073
1074         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1075
1076         return 0;
1077 }
1078
1079 static const char *iname[] = {
1080         [TM6000_INPUT_TV] = "Television",
1081         [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1082         [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1083         [TM6000_INPUT_SVIDEO] = "S-Video",
1084 };
1085
1086 static int vidioc_enum_input(struct file *file, void *priv,
1087                                 struct v4l2_input *i)
1088 {
1089         struct tm6000_fh   *fh = priv;
1090         struct tm6000_core *dev = fh->dev;
1091         unsigned int n;
1092
1093         n = i->index;
1094         if (n >= 3)
1095                 return -EINVAL;
1096
1097         if (!dev->vinput[n].type)
1098                 return -EINVAL;
1099
1100         i->index = n;
1101
1102         if (dev->vinput[n].type == TM6000_INPUT_TV)
1103                 i->type = V4L2_INPUT_TYPE_TUNER;
1104         else
1105                 i->type = V4L2_INPUT_TYPE_CAMERA;
1106
1107         strcpy(i->name, iname[dev->vinput[n].type]);
1108
1109         i->std = TM6000_STD;
1110
1111         return 0;
1112 }
1113
1114 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1115 {
1116         struct tm6000_fh   *fh = priv;
1117         struct tm6000_core *dev = fh->dev;
1118
1119         *i = dev->input;
1120
1121         return 0;
1122 }
1123
1124 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1125 {
1126         struct tm6000_fh   *fh = priv;
1127         struct tm6000_core *dev = fh->dev;
1128         int rc = 0;
1129
1130         if (i >= 3)
1131                 return -EINVAL;
1132         if (!dev->vinput[i].type)
1133                 return -EINVAL;
1134
1135         dev->input = i;
1136
1137         rc = vidioc_s_std(file, priv, dev->vfd->current_norm);
1138
1139         return rc;
1140 }
1141
1142 /* --- controls ---------------------------------------------- */
1143
1144 static int tm6000_s_ctrl(struct v4l2_ctrl *ctrl)
1145 {
1146         struct tm6000_core *dev = container_of(ctrl->handler, struct tm6000_core, ctrl_handler);
1147         u8  val = ctrl->val;
1148
1149         switch (ctrl->id) {
1150         case V4L2_CID_CONTRAST:
1151                 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1152                 return 0;
1153         case V4L2_CID_BRIGHTNESS:
1154                 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1155                 return 0;
1156         case V4L2_CID_SATURATION:
1157                 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1158                 return 0;
1159         case V4L2_CID_HUE:
1160                 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1161                 return 0;
1162         }
1163         return -EINVAL;
1164 }
1165
1166 static const struct v4l2_ctrl_ops tm6000_ctrl_ops = {
1167         .s_ctrl = tm6000_s_ctrl,
1168 };
1169
1170 static int tm6000_radio_s_ctrl(struct v4l2_ctrl *ctrl)
1171 {
1172         struct tm6000_core *dev = container_of(ctrl->handler,
1173                         struct tm6000_core, radio_ctrl_handler);
1174         u8  val = ctrl->val;
1175
1176         switch (ctrl->id) {
1177         case V4L2_CID_AUDIO_MUTE:
1178                 dev->ctl_mute = val;
1179                 tm6000_tvaudio_set_mute(dev, val);
1180                 return 0;
1181         case V4L2_CID_AUDIO_VOLUME:
1182                 dev->ctl_volume = val;
1183                 tm6000_set_volume(dev, val);
1184                 return 0;
1185         }
1186         return -EINVAL;
1187 }
1188
1189 static const struct v4l2_ctrl_ops tm6000_radio_ctrl_ops = {
1190         .s_ctrl = tm6000_radio_s_ctrl,
1191 };
1192
1193 static int vidioc_g_tuner(struct file *file, void *priv,
1194                                 struct v4l2_tuner *t)
1195 {
1196         struct tm6000_fh   *fh  = priv;
1197         struct tm6000_core *dev = fh->dev;
1198
1199         if (UNSET == dev->tuner_type)
1200                 return -ENOTTY;
1201         if (0 != t->index)
1202                 return -EINVAL;
1203
1204         strcpy(t->name, "Television");
1205         t->type       = V4L2_TUNER_ANALOG_TV;
1206         t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
1207         t->rangehigh  = 0xffffffffUL;
1208         t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1209
1210         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1211
1212         t->audmode = dev->amode;
1213
1214         return 0;
1215 }
1216
1217 static int vidioc_s_tuner(struct file *file, void *priv,
1218                                 const struct v4l2_tuner *t)
1219 {
1220         struct tm6000_fh   *fh  = priv;
1221         struct tm6000_core *dev = fh->dev;
1222
1223         if (UNSET == dev->tuner_type)
1224                 return -ENOTTY;
1225         if (0 != t->index)
1226                 return -EINVAL;
1227
1228         if (t->audmode > V4L2_TUNER_MODE_STEREO)
1229                 dev->amode = V4L2_TUNER_MODE_STEREO;
1230         else
1231                 dev->amode = t->audmode;
1232         dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1233
1234         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1235
1236         return 0;
1237 }
1238
1239 static int vidioc_g_frequency(struct file *file, void *priv,
1240                                 struct v4l2_frequency *f)
1241 {
1242         struct tm6000_fh   *fh  = priv;
1243         struct tm6000_core *dev = fh->dev;
1244
1245         if (UNSET == dev->tuner_type)
1246                 return -ENOTTY;
1247         if (f->tuner)
1248                 return -EINVAL;
1249
1250         f->frequency = dev->freq;
1251
1252         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1253
1254         return 0;
1255 }
1256
1257 static int vidioc_s_frequency(struct file *file, void *priv,
1258                                 const struct v4l2_frequency *f)
1259 {
1260         struct tm6000_fh   *fh  = priv;
1261         struct tm6000_core *dev = fh->dev;
1262
1263         if (UNSET == dev->tuner_type)
1264                 return -ENOTTY;
1265         if (f->tuner != 0)
1266                 return -EINVAL;
1267
1268         dev->freq = f->frequency;
1269         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1270
1271         return 0;
1272 }
1273
1274 static int radio_g_tuner(struct file *file, void *priv,
1275                                         struct v4l2_tuner *t)
1276 {
1277         struct tm6000_fh *fh = file->private_data;
1278         struct tm6000_core *dev = fh->dev;
1279
1280         if (0 != t->index)
1281                 return -EINVAL;
1282
1283         memset(t, 0, sizeof(*t));
1284         strcpy(t->name, "Radio");
1285         t->type = V4L2_TUNER_RADIO;
1286         t->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
1287         t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1288         t->audmode = V4L2_TUNER_MODE_STEREO;
1289
1290         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1291
1292         return 0;
1293 }
1294
1295 static int radio_s_tuner(struct file *file, void *priv,
1296                                         const struct v4l2_tuner *t)
1297 {
1298         struct tm6000_fh *fh = file->private_data;
1299         struct tm6000_core *dev = fh->dev;
1300
1301         if (0 != t->index)
1302                 return -EINVAL;
1303         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1304         return 0;
1305 }
1306
1307 /* ------------------------------------------------------------------
1308         File operations for the device
1309    ------------------------------------------------------------------*/
1310
1311 static int __tm6000_open(struct file *file)
1312 {
1313         struct video_device *vdev = video_devdata(file);
1314         struct tm6000_core *dev = video_drvdata(file);
1315         struct tm6000_fh *fh;
1316         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1317         int rc;
1318         int radio = 0;
1319
1320         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1321                 video_device_node_name(vdev));
1322
1323         switch (vdev->vfl_type) {
1324         case VFL_TYPE_GRABBER:
1325                 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1326                 break;
1327         case VFL_TYPE_VBI:
1328                 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1329                 break;
1330         case VFL_TYPE_RADIO:
1331                 radio = 1;
1332                 break;
1333         }
1334
1335         /* If more than one user, mutex should be added */
1336         dev->users++;
1337
1338         dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1339                 video_device_node_name(vdev), v4l2_type_names[type],
1340                 dev->users);
1341
1342         /* allocate + initialize per filehandle data */
1343         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1344         if (NULL == fh) {
1345                 dev->users--;
1346                 return -ENOMEM;
1347         }
1348
1349         v4l2_fh_init(&fh->fh, vdev);
1350         file->private_data = fh;
1351         fh->dev      = dev;
1352         fh->radio    = radio;
1353         dev->radio   = radio;
1354         fh->type     = type;
1355         dev->fourcc  = format[0].fourcc;
1356
1357         fh->fmt      = format_by_fourcc(dev->fourcc);
1358
1359         tm6000_get_std_res(dev);
1360
1361         fh->width = dev->width;
1362         fh->height = dev->height;
1363
1364         dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1365                                                 "dev->vidq=0x%08lx\n",
1366                         (unsigned long)fh, (unsigned long)dev,
1367                         (unsigned long)&dev->vidq);
1368         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1369                                 "queued=%d\n", list_empty(&dev->vidq.queued));
1370         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1371                                 "active=%d\n", list_empty(&dev->vidq.active));
1372
1373         /* initialize hardware on analog mode */
1374         rc = tm6000_init_analog_mode(dev);
1375         if (rc < 0)
1376                 return rc;
1377
1378         dev->mode = TM6000_MODE_ANALOG;
1379
1380         if (!fh->radio) {
1381                 videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1382                                 NULL, &dev->slock,
1383                                 fh->type,
1384                                 V4L2_FIELD_INTERLACED,
1385                                 sizeof(struct tm6000_buffer), fh, &dev->lock);
1386         } else {
1387                 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1388                 tm6000_set_audio_rinput(dev);
1389                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1390                 tm6000_prepare_isoc(dev);
1391                 tm6000_start_thread(dev);
1392         }
1393         v4l2_fh_add(&fh->fh);
1394
1395         return 0;
1396 }
1397
1398 static int tm6000_open(struct file *file)
1399 {
1400         struct video_device *vdev = video_devdata(file);
1401         int res;
1402
1403         mutex_lock(vdev->lock);
1404         res = __tm6000_open(file);
1405         mutex_unlock(vdev->lock);
1406         return res;
1407 }
1408
1409 static ssize_t
1410 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1411 {
1412         struct tm6000_fh *fh = file->private_data;
1413         struct tm6000_core *dev = fh->dev;
1414
1415         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1416                 int res;
1417
1418                 if (!res_get(fh->dev, fh, true))
1419                         return -EBUSY;
1420
1421                 if (mutex_lock_interruptible(&dev->lock))
1422                         return -ERESTARTSYS;
1423                 res = videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1424                                         file->f_flags & O_NONBLOCK);
1425                 mutex_unlock(&dev->lock);
1426                 return res;
1427         }
1428         return 0;
1429 }
1430
1431 static unsigned int
1432 __tm6000_poll(struct file *file, struct poll_table_struct *wait)
1433 {
1434         unsigned long req_events = poll_requested_events(wait);
1435         struct tm6000_fh        *fh = file->private_data;
1436         struct tm6000_buffer    *buf;
1437         int res = 0;
1438
1439         if (v4l2_event_pending(&fh->fh))
1440                 res = POLLPRI;
1441         else if (req_events & POLLPRI)
1442                 poll_wait(file, &fh->fh.wait, wait);
1443         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1444                 return res | POLLERR;
1445
1446         if (!!is_res_streaming(fh->dev, fh))
1447                 return res | POLLERR;
1448
1449         if (!is_res_read(fh->dev, fh)) {
1450                 /* streaming capture */
1451                 if (list_empty(&fh->vb_vidq.stream))
1452                         return res | POLLERR;
1453                 buf = list_entry(fh->vb_vidq.stream.next, struct tm6000_buffer, vb.stream);
1454                 poll_wait(file, &buf->vb.done, wait);
1455                 if (buf->vb.state == VIDEOBUF_DONE ||
1456                     buf->vb.state == VIDEOBUF_ERROR)
1457                         return res | POLLIN | POLLRDNORM;
1458         } else if (req_events & (POLLIN | POLLRDNORM)) {
1459                 /* read() capture */
1460                 return res | videobuf_poll_stream(file, &fh->vb_vidq, wait);
1461         }
1462         return res;
1463 }
1464
1465 static unsigned int tm6000_poll(struct file *file, struct poll_table_struct *wait)
1466 {
1467         struct tm6000_fh *fh = file->private_data;
1468         struct tm6000_core *dev = fh->dev;
1469         unsigned int res;
1470
1471         mutex_lock(&dev->lock);
1472         res = __tm6000_poll(file, wait);
1473         mutex_unlock(&dev->lock);
1474         return res;
1475 }
1476
1477 static int tm6000_release(struct file *file)
1478 {
1479         struct tm6000_fh         *fh = file->private_data;
1480         struct tm6000_core      *dev = fh->dev;
1481         struct video_device    *vdev = video_devdata(file);
1482
1483         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1484                 video_device_node_name(vdev), dev->users);
1485
1486         mutex_lock(&dev->lock);
1487         dev->users--;
1488
1489         res_free(dev, fh);
1490
1491         if (!dev->users) {
1492                 tm6000_uninit_isoc(dev);
1493
1494                 /* Stop interrupt USB pipe */
1495                 tm6000_ir_int_stop(dev);
1496
1497                 usb_reset_configuration(dev->udev);
1498
1499                 if (dev->int_in.endp)
1500                         usb_set_interface(dev->udev,
1501                                         dev->isoc_in.bInterfaceNumber, 2);
1502                 else
1503                         usb_set_interface(dev->udev,
1504                                         dev->isoc_in.bInterfaceNumber, 0);
1505
1506                 /* Start interrupt USB pipe */
1507                 tm6000_ir_int_start(dev);
1508
1509                 if (!fh->radio)
1510                         videobuf_mmap_free(&fh->vb_vidq);
1511         }
1512         v4l2_fh_del(&fh->fh);
1513         v4l2_fh_exit(&fh->fh);
1514         kfree(fh);
1515         mutex_unlock(&dev->lock);
1516
1517         return 0;
1518 }
1519
1520 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1521 {
1522         struct tm6000_fh *fh = file->private_data;
1523         struct tm6000_core *dev = fh->dev;
1524         int res;
1525
1526         if (mutex_lock_interruptible(&dev->lock))
1527                 return -ERESTARTSYS;
1528         res = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1529         mutex_unlock(&dev->lock);
1530         return res;
1531 }
1532
1533 static struct v4l2_file_operations tm6000_fops = {
1534         .owner = THIS_MODULE,
1535         .open = tm6000_open,
1536         .release = tm6000_release,
1537         .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1538         .read = tm6000_read,
1539         .poll = tm6000_poll,
1540         .mmap = tm6000_mmap,
1541 };
1542
1543 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1544         .vidioc_querycap          = vidioc_querycap,
1545         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1546         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1547         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1548         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1549         .vidioc_s_std             = vidioc_s_std,
1550         .vidioc_enum_input        = vidioc_enum_input,
1551         .vidioc_g_input           = vidioc_g_input,
1552         .vidioc_s_input           = vidioc_s_input,
1553         .vidioc_g_tuner           = vidioc_g_tuner,
1554         .vidioc_s_tuner           = vidioc_s_tuner,
1555         .vidioc_g_frequency       = vidioc_g_frequency,
1556         .vidioc_s_frequency       = vidioc_s_frequency,
1557         .vidioc_streamon          = vidioc_streamon,
1558         .vidioc_streamoff         = vidioc_streamoff,
1559         .vidioc_reqbufs           = vidioc_reqbufs,
1560         .vidioc_querybuf          = vidioc_querybuf,
1561         .vidioc_qbuf              = vidioc_qbuf,
1562         .vidioc_dqbuf             = vidioc_dqbuf,
1563         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1564         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1565 };
1566
1567 static struct video_device tm6000_template = {
1568         .name           = "tm6000",
1569         .fops           = &tm6000_fops,
1570         .ioctl_ops      = &video_ioctl_ops,
1571         .release        = video_device_release,
1572         .tvnorms        = TM6000_STD,
1573         .current_norm   = V4L2_STD_NTSC_M,
1574 };
1575
1576 static const struct v4l2_file_operations radio_fops = {
1577         .owner          = THIS_MODULE,
1578         .open           = tm6000_open,
1579         .poll           = v4l2_ctrl_poll,
1580         .release        = tm6000_release,
1581         .unlocked_ioctl = video_ioctl2,
1582 };
1583
1584 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1585         .vidioc_querycap        = vidioc_querycap,
1586         .vidioc_g_tuner         = radio_g_tuner,
1587         .vidioc_s_tuner         = radio_s_tuner,
1588         .vidioc_g_frequency     = vidioc_g_frequency,
1589         .vidioc_s_frequency     = vidioc_s_frequency,
1590         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1591         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1592 };
1593
1594 static struct video_device tm6000_radio_template = {
1595         .name                   = "tm6000",
1596         .fops                   = &radio_fops,
1597         .ioctl_ops              = &radio_ioctl_ops,
1598 };
1599
1600 /* -----------------------------------------------------------------
1601  *      Initialization and module stuff
1602  * ------------------------------------------------------------------
1603  */
1604
1605 static struct video_device *vdev_init(struct tm6000_core *dev,
1606                 const struct video_device
1607                 *template, const char *type_name)
1608 {
1609         struct video_device *vfd;
1610
1611         vfd = video_device_alloc();
1612         if (NULL == vfd)
1613                 return NULL;
1614
1615         *vfd = *template;
1616         vfd->v4l2_dev = &dev->v4l2_dev;
1617         vfd->release = video_device_release;
1618         vfd->debug = tm6000_debug;
1619         vfd->lock = &dev->lock;
1620         set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
1621
1622         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1623
1624         video_set_drvdata(vfd, dev);
1625         return vfd;
1626 }
1627
1628 int tm6000_v4l2_register(struct tm6000_core *dev)
1629 {
1630         int ret = 0;
1631
1632         v4l2_ctrl_handler_init(&dev->ctrl_handler, 6);
1633         v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 2);
1634         v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1635                         V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
1636         v4l2_ctrl_new_std(&dev->radio_ctrl_handler, &tm6000_radio_ctrl_ops,
1637                         V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
1638         v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1639                         V4L2_CID_BRIGHTNESS, 0, 255, 1, 54);
1640         v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1641                         V4L2_CID_CONTRAST, 0, 255, 1, 119);
1642         v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1643                         V4L2_CID_SATURATION, 0, 255, 1, 112);
1644         v4l2_ctrl_new_std(&dev->ctrl_handler, &tm6000_ctrl_ops,
1645                         V4L2_CID_HUE, -128, 127, 1, 0);
1646         v4l2_ctrl_add_handler(&dev->ctrl_handler,
1647                         &dev->radio_ctrl_handler, NULL);
1648
1649         if (dev->radio_ctrl_handler.error)
1650                 ret = dev->radio_ctrl_handler.error;
1651         if (!ret && dev->ctrl_handler.error)
1652                 ret = dev->ctrl_handler.error;
1653         if (ret)
1654                 goto free_ctrl;
1655
1656         dev->vfd = vdev_init(dev, &tm6000_template, "video");
1657
1658         if (!dev->vfd) {
1659                 printk(KERN_INFO "%s: can't register video device\n",
1660                        dev->name);
1661                 ret = -ENOMEM;
1662                 goto free_ctrl;
1663         }
1664         dev->vfd->ctrl_handler = &dev->ctrl_handler;
1665
1666         /* init video dma queues */
1667         INIT_LIST_HEAD(&dev->vidq.active);
1668         INIT_LIST_HEAD(&dev->vidq.queued);
1669
1670         ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1671
1672         if (ret < 0) {
1673                 printk(KERN_INFO "%s: can't register video device\n",
1674                        dev->name);
1675                 video_device_release(dev->vfd);
1676                 dev->vfd = NULL;
1677                 goto free_ctrl;
1678         }
1679
1680         printk(KERN_INFO "%s: registered device %s\n",
1681                dev->name, video_device_node_name(dev->vfd));
1682
1683         if (dev->caps.has_radio) {
1684                 dev->radio_dev = vdev_init(dev, &tm6000_radio_template,
1685                                                            "radio");
1686                 if (!dev->radio_dev) {
1687                         printk(KERN_INFO "%s: can't register radio device\n",
1688                                dev->name);
1689                         ret = -ENXIO;
1690                         goto unreg_video;
1691                 }
1692
1693                 dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
1694                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1695                                             radio_nr);
1696                 if (ret < 0) {
1697                         printk(KERN_INFO "%s: can't register radio device\n",
1698                                dev->name);
1699                         video_device_release(dev->radio_dev);
1700                         goto unreg_video;
1701                 }
1702
1703                 printk(KERN_INFO "%s: registered device %s\n",
1704                        dev->name, video_device_node_name(dev->radio_dev));
1705         }
1706
1707         printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1708         return ret;
1709
1710 unreg_video:
1711         video_unregister_device(dev->vfd);
1712 free_ctrl:
1713         v4l2_ctrl_handler_free(&dev->ctrl_handler);
1714         v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
1715         return ret;
1716 }
1717
1718 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1719 {
1720         video_unregister_device(dev->vfd);
1721
1722         /* if URB buffers are still allocated free them now */
1723         tm6000_free_urb_buffers(dev);
1724
1725         if (dev->radio_dev) {
1726                 if (video_is_registered(dev->radio_dev))
1727                         video_unregister_device(dev->radio_dev);
1728                 else
1729                         video_device_release(dev->radio_dev);
1730                 dev->radio_dev = NULL;
1731         }
1732
1733         return 0;
1734 }
1735
1736 int tm6000_v4l2_exit(void)
1737 {
1738         return 0;
1739 }
1740
1741 module_param(video_nr, int, 0);
1742 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1743
1744 module_param_named(debug, tm6000_debug, int, 0444);
1745 MODULE_PARM_DESC(debug, "activates debug info");
1746
1747 module_param(vid_limit, int, 0644);
1748 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1749
1750 module_param(keep_urb, bool, 0);
1751 MODULE_PARM_DESC(keep_urb, "Keep urb buffers allocated even when the device is closed by the user");