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 <media/tuner.h>
  38 #include <linux/interrupt.h>
  39 #include <linux/kthread.h>
  40 #include <linux/highmem.h>
  41 #include <linux/freezer.h>
  42
  43 #include "tm6000-regs.h"
  44 #include "tm6000.h"
  45
  46 #define BUFFER_TIMEOUT     msecs_to_jiffies(2000)  /* 2 seconds */
  47
  48 /* Limits minimum and default number of buffers */
  49 #define TM6000_MIN_BUF 4
  50 #define TM6000_DEF_BUF 8
  51
  52 #define TM6000_MAX_ISO_PACKETS  46      /* Max number of ISO packets */
  53
  54 /* Declare static vars that will be used as parameters */
  55 static unsigned int vid_limit = 16;     /* Video memory limit, in Mb */
  56 static int video_nr = -1;               /* /dev/videoN, -1 for autodetect */
  57 static int radio_nr = -1;               /* /dev/radioN, -1 for autodetect */
  58
  59 /* Debug level */
  60 int tm6000_debug;
  61 EXPORT_SYMBOL_GPL(tm6000_debug);
  62
  63 static const struct v4l2_queryctrl no_ctrl = {
  64         .name  = "42",
  65         .flags = V4L2_CTRL_FLAG_DISABLED,
  66 };
  67
  68 /* supported controls */
  69 static struct v4l2_queryctrl tm6000_qctrl[] = {
  70         {
  71                 .id            = V4L2_CID_BRIGHTNESS,
  72                 .type          = V4L2_CTRL_TYPE_INTEGER,
  73                 .name          = "Brightness",
  74                 .minimum       = 0,
  75                 .maximum       = 255,
  76                 .step          = 1,
  77                 .default_value = 54,
  78                 .flags         = 0,
  79         }, {
  80                 .id            = V4L2_CID_CONTRAST,
  81                 .type          = V4L2_CTRL_TYPE_INTEGER,
  82                 .name          = "Contrast",
  83                 .minimum       = 0,
  84                 .maximum       = 255,
  85                 .step          = 0x1,
  86                 .default_value = 119,
  87                 .flags         = 0,
  88         }, {
  89                 .id            = V4L2_CID_SATURATION,
  90                 .type          = V4L2_CTRL_TYPE_INTEGER,
  91                 .name          = "Saturation",
  92                 .minimum       = 0,
  93                 .maximum       = 255,
  94                 .step          = 0x1,
  95                 .default_value = 112,
  96                 .flags         = 0,
  97         }, {
  98                 .id            = V4L2_CID_HUE,
  99                 .type          = V4L2_CTRL_TYPE_INTEGER,
 100                 .name          = "Hue",
 101                 .minimum       = -128,
 102                 .maximum       = 127,
 103                 .step          = 0x1,
 104                 .default_value = 0,
 105                 .flags         = 0,
 106         },
 107                 /* --- audio --- */
 108         {
 109                 .id            = V4L2_CID_AUDIO_MUTE,
 110                 .name          = "Mute",
 111                 .minimum       = 0,
 112                 .maximum       = 1,
 113                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 114         }, {
 115                 .id            = V4L2_CID_AUDIO_VOLUME,
 116                 .name          = "Volume",
 117                 .minimum       = -15,
 118                 .maximum       = 15,
 119                 .step          = 1,
 120                 .default_value = 0,
 121                 .type          = V4L2_CTRL_TYPE_INTEGER,
 122         }
 123 };
 124
 125 static const unsigned int CTRLS = ARRAY_SIZE(tm6000_qctrl);
 126 static int qctl_regs[ARRAY_SIZE(tm6000_qctrl)];
 127
 128 static struct tm6000_fmt format[] = {
 129         {
 130                 .name     = "4:2:2, packed, YVY2",
 131                 .fourcc   = V4L2_PIX_FMT_YUYV,
 132                 .depth    = 16,
 133         }, {
 134                 .name     = "4:2:2, packed, UYVY",
 135                 .fourcc   = V4L2_PIX_FMT_UYVY,
 136                 .depth    = 16,
 137         }, {
 138                 .name     = "A/V + VBI mux packet",
 139                 .fourcc   = V4L2_PIX_FMT_TM6000,
 140                 .depth    = 16,
 141         }
 142 };
 143
 144 static const struct v4l2_queryctrl *ctrl_by_id(unsigned int id)
 145 {
 146         unsigned int i;
 147
 148         for (i = 0; i < CTRLS; i++)
 149                 if (tm6000_qctrl[i].id == id)
 150                         return tm6000_qctrl+i;
 151         return NULL;
 152 }
 153
 154 /* ------------------------------------------------------------------
 155  *      DMA and thread functions
 156  * ------------------------------------------------------------------
 157  */
 158
 159 #define norm_maxw(a) 720
 160 #define norm_maxh(a) 576
 161
 162 #define norm_minw(a) norm_maxw(a)
 163 #define norm_minh(a) norm_maxh(a)
 164
 165 /*
 166  * video-buf generic routine to get the next available buffer
 167  */
 168 static inline void get_next_buf(struct tm6000_dmaqueue *dma_q,
 169                                struct tm6000_buffer   **buf)
 170 {
 171         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 172         char *outp;
 173
 174         if (list_empty(&dma_q->active)) {
 175                 dprintk(dev, V4L2_DEBUG_QUEUE, "No active queue to serve\n");
 176                 *buf = NULL;
 177                 return;
 178         }
 179
 180         *buf = list_entry(dma_q->active.next,
 181                         struct tm6000_buffer, vb.queue);
 182
 183         if (!buf)
 184                 return;
 185
 186         /* Cleans up buffer - Useful for testing for frame/URB loss */
 187         outp = videobuf_to_vmalloc(&(*buf)->vb);
 188
 189         return;
 190 }
 191
 192 /*
 193  * Announces that a buffer were filled and request the next
 194  */
 195 static inline void buffer_filled(struct tm6000_core *dev,
 196                                  struct tm6000_dmaqueue *dma_q,
 197                                  struct tm6000_buffer *buf)
 198 {
 199         /* Advice that buffer was filled */
 200         dprintk(dev, V4L2_DEBUG_ISOC, "[%p/%d] wakeup\n", buf, buf->vb.i);
 201         buf->vb.state = VIDEOBUF_DONE;
 202         buf->vb.field_count++;
 203         do_gettimeofday(&buf->vb.ts);
 204
 205         list_del(&buf->vb.queue);
 206         wake_up(&buf->vb.done);
 207 }
 208
 209 const char *tm6000_msg_type[] = {
 210         "unknown(0)",   /* 0 */
 211         "video",        /* 1 */
 212         "audio",        /* 2 */
 213         "vbi",          /* 3 */
 214         "pts",          /* 4 */
 215         "err",          /* 5 */
 216         "unknown(6)",   /* 6 */
 217         "unknown(7)",   /* 7 */
 218 };
 219
 220 /*
 221  * Identify the tm5600/6000 buffer header type and properly handles
 222  */
 223 static int copy_streams(u8 *data, unsigned long len,
 224                         struct urb *urb)
 225 {
 226         struct tm6000_dmaqueue  *dma_q = urb->context;
 227         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 228         u8 *ptr = data, *endp = data+len, c;
 229         unsigned long header = 0;
 230         int rc = 0;
 231         unsigned int cmd, cpysize, pktsize, size, field, block, line, pos = 0;
 232         struct tm6000_buffer *vbuf = NULL;
 233         char *voutp = NULL;
 234         unsigned int linewidth;
 235
 236         if (!dev->radio) {
 237                 /* get video buffer */
 238                 get_next_buf(dma_q, &vbuf);
 239
 240                 if (!vbuf)
 241                         return rc;
 242                 voutp = videobuf_to_vmalloc(&vbuf->vb);
 243
 244                 if (!voutp)
 245                         return 0;
 246         }
 247
 248         for (ptr = data; ptr < endp;) {
 249                 if (!dev->isoc_ctl.cmd) {
 250                         /* Header */
 251                         if (dev->isoc_ctl.tmp_buf_len > 0) {
 252                                 /* from last urb or packet */
 253                                 header = dev->isoc_ctl.tmp_buf;
 254                                 if (4 - dev->isoc_ctl.tmp_buf_len > 0) {
 255                                         memcpy((u8 *)&header +
 256                                                 dev->isoc_ctl.tmp_buf_len,
 257                                                 ptr,
 258                                                 4 - dev->isoc_ctl.tmp_buf_len);
 259                                         ptr += 4 - dev->isoc_ctl.tmp_buf_len;
 260                                 }
 261                                 dev->isoc_ctl.tmp_buf_len = 0;
 262                         } else {
 263                                 if (ptr + 3 >= endp) {
 264                                         /* have incomplete header */
 265                                         dev->isoc_ctl.tmp_buf_len = endp - ptr;
 266                                         memcpy(&dev->isoc_ctl.tmp_buf, ptr,
 267                                                 dev->isoc_ctl.tmp_buf_len);
 268                                         return rc;
 269                                 }
 270                                 /* Seek for sync */
 271                                 for (; ptr < endp - 3; ptr++) {
 272                                         if (*(ptr + 3) == 0x47)
 273                                                 break;
 274                                 }
 275                                 /* Get message header */
 276                                 header = *(unsigned long *)ptr;
 277                                 ptr += 4;
 278                         }
 279
 280                         /* split the header fields */
 281                         c = (header >> 24) & 0xff;
 282                         size = ((header & 0x7e) << 1);
 283                         if (size > 0)
 284                                 size -= 4;
 285                         block = (header >> 7) & 0xf;
 286                         field = (header >> 11) & 0x1;
 287                         line  = (header >> 12) & 0x1ff;
 288                         cmd   = (header >> 21) & 0x7;
 289                         /* Validates haeder fields */
 290                         if (size > TM6000_URB_MSG_LEN)
 291                                 size = TM6000_URB_MSG_LEN;
 292                         pktsize = TM6000_URB_MSG_LEN;
 293                         /* calculate position in buffer
 294                          * and change the buffer
 295                          */
 296                         switch (cmd) {
 297                         case TM6000_URB_MSG_VIDEO:
 298                                 if (!dev->radio) {
 299                                         if ((dev->isoc_ctl.vfield != field) &&
 300                                                 (field == 1)) {
 301                                         /* Announces that a new buffer
 302                                          * were filled
 303                                          */
 304                                                 buffer_filled(dev, dma_q, vbuf);
 305                                                 dprintk(dev, V4L2_DEBUG_ISOC,
 306                                                         "new buffer filled\n");
 307                                                 get_next_buf(dma_q, &vbuf);
 308                                                 if (!vbuf)
 309                                                         return rc;
 310                                                 voutp = videobuf_to_vmalloc(&vbuf->vb);
 311                                                 if (!voutp)
 312                                                         return rc;
 313                                                 memset(voutp, 0, vbuf->vb.size);
 314                                         }
 315                                         linewidth = vbuf->vb.width << 1;
 316                                         pos = ((line << 1) - field - 1) *
 317                                         linewidth + block * TM6000_URB_MSG_LEN;
 318                                         /* Don't allow to write out of the buffer */
 319                                         if (pos + size > vbuf->vb.size)
 320                                                 cmd = TM6000_URB_MSG_ERR;
 321                                         dev->isoc_ctl.vfield = field;
 322                                 }
 323                                 break;
 324                         case TM6000_URB_MSG_VBI:
 325                                 break;
 326                         case TM6000_URB_MSG_AUDIO:
 327                         case TM6000_URB_MSG_PTS:
 328                                 size = pktsize;         /* Size is always 180 bytes */
 329                                 break;
 330                         }
 331                 } else {
 332                         /* Continue the last copy */
 333                         cmd = dev->isoc_ctl.cmd;
 334                         size = dev->isoc_ctl.size;
 335                         pos = dev->isoc_ctl.pos;
 336                         pktsize = dev->isoc_ctl.pktsize;
 337                         field = dev->isoc_ctl.field;
 338                 }
 339                 cpysize = (endp - ptr > size) ? size : endp - ptr;
 340                 if (cpysize) {
 341                         /* copy data in different buffers */
 342                         switch (cmd) {
 343                         case TM6000_URB_MSG_VIDEO:
 344                                 /* Fills video buffer */
 345                                 if (vbuf)
 346                                         memcpy(&voutp[pos], ptr, cpysize);
 347                                 break;
 348                         case TM6000_URB_MSG_AUDIO: {
 349                                 int i;
 350                                 for (i = 0; i < cpysize; i += 2)
 351                                         swab16s((u16 *)(ptr + i));
 352
 353                                 tm6000_call_fillbuf(dev, TM6000_AUDIO, ptr, cpysize);
 354                                 break;
 355                         }
 356                         case TM6000_URB_MSG_VBI:
 357                                 /* Need some code to copy vbi buffer */
 358                                 break;
 359                         case TM6000_URB_MSG_PTS: {
 360                                 /* Need some code to copy pts */
 361                                 u32 pts;
 362                                 pts = *(u32 *)ptr;
 363                                 dprintk(dev, V4L2_DEBUG_ISOC, "field %d, PTS %x",
 364                                         field, pts);
 365                                 break;
 366                         }
 367                         }
 368                 }
 369                 if (ptr + pktsize > endp) {
 370                         /* End of URB packet, but cmd processing is not
 371                          * complete. Preserve the state for a next packet
 372                          */
 373                         dev->isoc_ctl.pos = pos + cpysize;
 374                         dev->isoc_ctl.size = size - cpysize;
 375                         dev->isoc_ctl.cmd = cmd;
 376                         dev->isoc_ctl.field = field;
 377                         dev->isoc_ctl.pktsize = pktsize - (endp - ptr);
 378                         ptr += endp - ptr;
 379                 } else {
 380                         dev->isoc_ctl.cmd = 0;
 381                         ptr += pktsize;
 382                 }
 383         }
 384         return 0;
 385 }
 386
 387 /*
 388  * Identify the tm5600/6000 buffer header type and properly handles
 389  */
 390 static int copy_multiplexed(u8 *ptr, unsigned long len,
 391                         struct urb *urb)
 392 {
 393         struct tm6000_dmaqueue  *dma_q = urb->context;
 394         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 395         unsigned int pos = dev->isoc_ctl.pos, cpysize;
 396         int rc = 1;
 397         struct tm6000_buffer *buf;
 398         char *outp = NULL;
 399
 400         get_next_buf(dma_q, &buf);
 401         if (buf)
 402                 outp = videobuf_to_vmalloc(&buf->vb);
 403
 404         if (!outp)
 405                 return 0;
 406
 407         while (len > 0) {
 408                 cpysize = min(len, buf->vb.size-pos);
 409                 memcpy(&outp[pos], ptr, cpysize);
 410                 pos += cpysize;
 411                 ptr += cpysize;
 412                 len -= cpysize;
 413                 if (pos >= buf->vb.size) {
 414                         pos = 0;
 415                         /* Announces that a new buffer were filled */
 416                         buffer_filled(dev, dma_q, buf);
 417                         dprintk(dev, V4L2_DEBUG_ISOC, "new buffer filled\n");
 418                         get_next_buf(dma_q, &buf);
 419                         if (!buf)
 420                                 break;
 421                         outp = videobuf_to_vmalloc(&(buf->vb));
 422                         if (!outp)
 423                                 return rc;
 424                         pos = 0;
 425                 }
 426         }
 427
 428         dev->isoc_ctl.pos = pos;
 429         return rc;
 430 }
 431
 432 static inline void print_err_status(struct tm6000_core *dev,
 433                                      int packet, int status)
 434 {
 435         char *errmsg = "Unknown";
 436
 437         switch (status) {
 438         case -ENOENT:
 439                 errmsg = "unlinked synchronuously";
 440                 break;
 441         case -ECONNRESET:
 442                 errmsg = "unlinked asynchronuously";
 443                 break;
 444         case -ENOSR:
 445                 errmsg = "Buffer error (overrun)";
 446                 break;
 447         case -EPIPE:
 448                 errmsg = "Stalled (device not responding)";
 449                 break;
 450         case -EOVERFLOW:
 451                 errmsg = "Babble (bad cable?)";
 452                 break;
 453         case -EPROTO:
 454                 errmsg = "Bit-stuff error (bad cable?)";
 455                 break;
 456         case -EILSEQ:
 457                 errmsg = "CRC/Timeout (could be anything)";
 458                 break;
 459         case -ETIME:
 460                 errmsg = "Device does not respond";
 461                 break;
 462         }
 463         if (packet < 0) {
 464                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB status %d [%s].\n",
 465                         status, errmsg);
 466         } else {
 467                 dprintk(dev, V4L2_DEBUG_QUEUE, "URB packet %d, status %d [%s].\n",
 468                         packet, status, errmsg);
 469         }
 470 }
 471
 472
 473 /*
 474  * Controls the isoc copy of each urb packet
 475  */
 476 static inline int tm6000_isoc_copy(struct urb *urb)
 477 {
 478         struct tm6000_dmaqueue  *dma_q = urb->context;
 479         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 480         int i, len = 0, rc = 1, status;
 481         char *p;
 482
 483         if (urb->status < 0) {
 484                 print_err_status(dev, -1, urb->status);
 485                 return 0;
 486         }
 487
 488         for (i = 0; i < urb->number_of_packets; i++) {
 489                 status = urb->iso_frame_desc[i].status;
 490
 491                 if (status < 0) {
 492                         print_err_status(dev, i, status);
 493                         continue;
 494                 }
 495
 496                 len = urb->iso_frame_desc[i].actual_length;
 497
 498                 if (len > 0) {
 499                         p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 500                         if (!urb->iso_frame_desc[i].status) {
 501                                 if ((dev->fourcc) == V4L2_PIX_FMT_TM6000) {
 502                                         rc = copy_multiplexed(p, len, urb);
 503                                         if (rc <= 0)
 504                                                 return rc;
 505                                 } else {
 506                                         copy_streams(p, len, urb);
 507                                 }
 508                         }
 509                 }
 510         }
 511         return rc;
 512 }
 513
 514 /* ------------------------------------------------------------------
 515  *      URB control
 516  * ------------------------------------------------------------------
 517  */
 518
 519 /*
 520  * IRQ callback, called by URB callback
 521  */
 522 static void tm6000_irq_callback(struct urb *urb)
 523 {
 524         struct tm6000_dmaqueue  *dma_q = urb->context;
 525         struct tm6000_core *dev = container_of(dma_q, struct tm6000_core, vidq);
 526         int i;
 527
 528         if (!dev)
 529                 return;
 530
 531         spin_lock(&dev->slock);
 532         tm6000_isoc_copy(urb);
 533         spin_unlock(&dev->slock);
 534
 535         /* Reset urb buffers */
 536         for (i = 0; i < urb->number_of_packets; i++) {
 537                 urb->iso_frame_desc[i].status = 0;
 538                 urb->iso_frame_desc[i].actual_length = 0;
 539         }
 540
 541         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 542         if (urb->status)
 543                 tm6000_err("urb resubmit failed (error=%i)\n",
 544                         urb->status);
 545 }
 546
 547 /*
 548  * Stop and Deallocate URBs
 549  */
 550 static void tm6000_uninit_isoc(struct tm6000_core *dev)
 551 {
 552         struct urb *urb;
 553         int i;
 554
 555         dev->isoc_ctl.buf = NULL;
 556         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 557                 urb = dev->isoc_ctl.urb[i];
 558                 if (urb) {
 559                         usb_kill_urb(urb);
 560                         usb_unlink_urb(urb);
 561                         if (dev->isoc_ctl.transfer_buffer[i]) {
 562                                 usb_free_coherent(dev->udev,
 563                                                 urb->transfer_buffer_length,
 564                                                 dev->isoc_ctl.transfer_buffer[i],
 565                                                 urb->transfer_dma);
 566                         }
 567                         usb_free_urb(urb);
 568                         dev->isoc_ctl.urb[i] = NULL;
 569                 }
 570                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 571         }
 572
 573         kfree(dev->isoc_ctl.urb);
 574         kfree(dev->isoc_ctl.transfer_buffer);
 575
 576         dev->isoc_ctl.urb = NULL;
 577         dev->isoc_ctl.transfer_buffer = NULL;
 578         dev->isoc_ctl.num_bufs = 0;
 579 }
 580
 581 /*
 582  * Allocate URBs and start IRQ
 583  */
 584 static int tm6000_prepare_isoc(struct tm6000_core *dev)
 585 {
 586         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 587         int i, j, sb_size, pipe, size, max_packets, num_bufs = 8;
 588         struct urb *urb;
 589
 590         /* De-allocates all pending stuff */
 591         tm6000_uninit_isoc(dev);
 592         /* Stop interrupt USB pipe */
 593         tm6000_ir_int_stop(dev);
 594
 595         usb_set_interface(dev->udev,
 596                           dev->isoc_in.bInterfaceNumber,
 597                           dev->isoc_in.bAlternateSetting);
 598
 599         /* Start interrupt USB pipe */
 600         tm6000_ir_int_start(dev);
 601
 602         pipe = usb_rcvisocpipe(dev->udev,
 603                                dev->isoc_in.endp->desc.bEndpointAddress &
 604                                USB_ENDPOINT_NUMBER_MASK);
 605
 606         size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
 607
 608         if (size > dev->isoc_in.maxsize)
 609                 size = dev->isoc_in.maxsize;
 610
 611         dev->isoc_ctl.max_pkt_size = size;
 612
 613         max_packets = TM6000_MAX_ISO_PACKETS;
 614         sb_size = max_packets * size;
 615
 616         dev->isoc_ctl.num_bufs = num_bufs;
 617
 618         dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
 619         if (!dev->isoc_ctl.urb) {
 620                 tm6000_err("cannot alloc memory for usb buffers\n");
 621                 return -ENOMEM;
 622         }
 623
 624         dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs,
 625                                    GFP_KERNEL);
 626         if (!dev->isoc_ctl.transfer_buffer) {
 627                 tm6000_err("cannot allocate memory for usbtransfer\n");
 628                 kfree(dev->isoc_ctl.urb);
 629                 return -ENOMEM;
 630         }
 631
 632         dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets"
 633                     " (%d bytes) of %d bytes each to handle %u size\n",
 634                     max_packets, num_bufs, sb_size,
 635                     dev->isoc_in.maxsize, size);
 636
 637         /* allocate urbs and transfer buffers */
 638         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 639                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 640                 if (!urb) {
 641                         tm6000_err("cannot alloc isoc_ctl.urb %i\n", i);
 642                         tm6000_uninit_isoc(dev);
 643                         usb_free_urb(urb);
 644                         return -ENOMEM;
 645                 }
 646                 dev->isoc_ctl.urb[i] = urb;
 647
 648                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->udev,
 649                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 650                 if (!dev->isoc_ctl.transfer_buffer[i]) {
 651                         tm6000_err("unable to allocate %i bytes for transfer"
 652                                         " buffer %i%s\n",
 653                                         sb_size, i,
 654                                         in_interrupt() ? " while in int" : "");
 655                         tm6000_uninit_isoc(dev);
 656                         return -ENOMEM;
 657                 }
 658                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
 659
 660                 usb_fill_bulk_urb(urb, dev->udev, pipe,
 661                                   dev->isoc_ctl.transfer_buffer[i], sb_size,
 662                                   tm6000_irq_callback, dma_q);
 663                 urb->interval = dev->isoc_in.endp->desc.bInterval;
 664                 urb->number_of_packets = max_packets;
 665                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 666
 667                 for (j = 0; j < max_packets; j++) {
 668                         urb->iso_frame_desc[j].offset = size * j;
 669                         urb->iso_frame_desc[j].length = size;
 670                 }
 671         }
 672
 673         return 0;
 674 }
 675
 676 static int tm6000_start_thread(struct tm6000_core *dev)
 677 {
 678         struct tm6000_dmaqueue *dma_q = &dev->vidq;
 679         int i;
 680
 681         dma_q->frame = 0;
 682         dma_q->ini_jiffies = jiffies;
 683
 684         init_waitqueue_head(&dma_q->wq);
 685
 686         /* submit urbs and enables IRQ */
 687         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 688                 int rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 689                 if (rc) {
 690                         tm6000_err("submit of urb %i failed (error=%i)\n", i,
 691                                    rc);
 692                         tm6000_uninit_isoc(dev);
 693                         return rc;
 694                 }
 695         }
 696
 697         return 0;
 698 }
 699
 700 /* ------------------------------------------------------------------
 701  *      Videobuf operations
 702  * ------------------------------------------------------------------
 703  */
 704
 705 static int
 706 buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
 707 {
 708         struct tm6000_fh *fh = vq->priv_data;
 709
 710         *size = fh->fmt->depth * fh->width * fh->height >> 3;
 711         if (0 == *count)
 712                 *count = TM6000_DEF_BUF;
 713
 714         if (*count < TM6000_MIN_BUF)
 715                 *count = TM6000_MIN_BUF;
 716
 717         while (*size * *count > vid_limit * 1024 * 1024)
 718                 (*count)--;
 719
 720         return 0;
 721 }
 722
 723 static void free_buffer(struct videobuf_queue *vq, struct tm6000_buffer *buf)
 724 {
 725         struct tm6000_fh *fh = vq->priv_data;
 726         struct tm6000_core   *dev = fh->dev;
 727         unsigned long flags;
 728
 729         if (in_interrupt())
 730                 BUG();
 731
 732         /* We used to wait for the buffer to finish here, but this didn't work
 733            because, as we were keeping the state as VIDEOBUF_QUEUED,
 734            videobuf_queue_cancel marked it as finished for us.
 735            (Also, it could wedge forever if the hardware was misconfigured.)
 736
 737            This should be safe; by the time we get here, the buffer isn't
 738            queued anymore. If we ever start marking the buffers as
 739            VIDEOBUF_ACTIVE, it won't be, though.
 740         */
 741         spin_lock_irqsave(&dev->slock, flags);
 742         if (dev->isoc_ctl.buf == buf)
 743                 dev->isoc_ctl.buf = NULL;
 744         spin_unlock_irqrestore(&dev->slock, flags);
 745
 746         videobuf_vmalloc_free(&buf->vb);
 747         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 748 }
 749
 750 static int
 751 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 752                                                 enum v4l2_field field)
 753 {
 754         struct tm6000_fh     *fh  = vq->priv_data;
 755         struct tm6000_buffer *buf = container_of(vb, struct tm6000_buffer, vb);
 756         struct tm6000_core   *dev = fh->dev;
 757         int rc = 0, urb_init = 0;
 758
 759         BUG_ON(NULL == fh->fmt);
 760
 761
 762         /* FIXME: It assumes depth=2 */
 763         /* The only currently supported format is 16 bits/pixel */
 764         buf->vb.size = fh->fmt->depth*fh->width*fh->height >> 3;
 765         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
 766                 return -EINVAL;
 767
 768         if (buf->fmt       != fh->fmt    ||
 769             buf->vb.width  != fh->width  ||
 770             buf->vb.height != fh->height ||
 771             buf->vb.field  != field) {
 772                 buf->fmt       = fh->fmt;
 773                 buf->vb.width  = fh->width;
 774                 buf->vb.height = fh->height;
 775                 buf->vb.field  = field;
 776                 buf->vb.state = VIDEOBUF_NEEDS_INIT;
 777         }
 778
 779         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 780                 if (0 != (rc = videobuf_iolock(vq, &buf->vb, NULL)))
 781                         goto fail;
 782                 urb_init = 1;
 783         }
 784
 785         if (!dev->isoc_ctl.num_bufs)
 786                 urb_init = 1;
 787
 788         if (urb_init) {
 789                 rc = tm6000_prepare_isoc(dev);
 790                 if (rc < 0)
 791                         goto fail;
 792
 793                 rc = tm6000_start_thread(dev);
 794                 if (rc < 0)
 795                         goto fail;
 796
 797         }
 798
 799         buf->vb.state = VIDEOBUF_PREPARED;
 800         return 0;
 801
 802 fail:
 803         free_buffer(vq, buf);
 804         return rc;
 805 }
 806
 807 static void
 808 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 809 {
 810         struct tm6000_buffer    *buf     = container_of(vb, struct tm6000_buffer, vb);
 811         struct tm6000_fh        *fh      = vq->priv_data;
 812         struct tm6000_core      *dev     = fh->dev;
 813         struct tm6000_dmaqueue  *vidq    = &dev->vidq;
 814
 815         buf->vb.state = VIDEOBUF_QUEUED;
 816         list_add_tail(&buf->vb.queue, &vidq->active);
 817 }
 818
 819 static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 820 {
 821         struct tm6000_buffer   *buf  = container_of(vb, struct tm6000_buffer, vb);
 822
 823         free_buffer(vq, buf);
 824 }
 825
 826 static struct videobuf_queue_ops tm6000_video_qops = {
 827         .buf_setup      = buffer_setup,
 828         .buf_prepare    = buffer_prepare,
 829         .buf_queue      = buffer_queue,
 830         .buf_release    = buffer_release,
 831 };
 832
 833 /* ------------------------------------------------------------------
 834  *      IOCTL handling
 835  * ------------------------------------------------------------------
 836  */
 837
 838 static bool is_res_read(struct tm6000_core *dev, struct tm6000_fh *fh)
 839 {
 840         /* Is the current fh handling it? if so, that's OK */
 841         if (dev->resources == fh && dev->is_res_read)
 842                 return true;
 843
 844         return false;
 845 }
 846
 847 static bool is_res_streaming(struct tm6000_core *dev, struct tm6000_fh *fh)
 848 {
 849         /* Is the current fh handling it? if so, that's OK */
 850         if (dev->resources == fh)
 851                 return true;
 852
 853         return false;
 854 }
 855
 856 static bool res_get(struct tm6000_core *dev, struct tm6000_fh *fh,
 857                    bool is_res_read)
 858 {
 859         /* Is the current fh handling it? if so, that's OK */
 860         if (dev->resources == fh && dev->is_res_read == is_res_read)
 861                 return true;
 862
 863         /* is it free? */
 864         if (dev->resources)
 865                 return false;
 866
 867         /* grab it */
 868         dev->resources = fh;
 869         dev->is_res_read = is_res_read;
 870         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: get\n");
 871         return true;
 872 }
 873
 874 static void res_free(struct tm6000_core *dev, struct tm6000_fh *fh)
 875 {
 876         /* Is the current fh handling it? if so, that's OK */
 877         if (dev->resources != fh)
 878                 return;
 879
 880         dev->resources = NULL;
 881         dprintk(dev, V4L2_DEBUG_RES_LOCK, "res: put\n");
 882 }
 883
 884 /* ------------------------------------------------------------------
 885  *      IOCTL vidioc handling
 886  * ------------------------------------------------------------------
 887  */
 888 static int vidioc_querycap(struct file *file, void  *priv,
 889                                         struct v4l2_capability *cap)
 890 {
 891         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 892
 893         strlcpy(cap->driver, "tm6000", sizeof(cap->driver));
 894         strlcpy(cap->card, "Trident TVMaster TM5600/6000/6010", sizeof(cap->card));
 895         cap->version = TM6000_VERSION;
 896         cap->capabilities =     V4L2_CAP_VIDEO_CAPTURE |
 897                                 V4L2_CAP_STREAMING     |
 898                                 V4L2_CAP_AUDIO         |
 899                                 V4L2_CAP_READWRITE;
 900
 901         if (dev->tuner_type != TUNER_ABSENT)
 902                 cap->capabilities |= V4L2_CAP_TUNER;
 903
 904         return 0;
 905 }
 906
 907 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 908                                         struct v4l2_fmtdesc *f)
 909 {
 910         if (unlikely(f->index >= ARRAY_SIZE(format)))
 911                 return -EINVAL;
 912
 913         strlcpy(f->description, format[f->index].name, sizeof(f->description));
 914         f->pixelformat = format[f->index].fourcc;
 915         return 0;
 916 }
 917
 918 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 919                                         struct v4l2_format *f)
 920 {
 921         struct tm6000_fh  *fh = priv;
 922
 923         f->fmt.pix.width        = fh->width;
 924         f->fmt.pix.height       = fh->height;
 925         f->fmt.pix.field        = fh->vb_vidq.field;
 926         f->fmt.pix.pixelformat  = fh->fmt->fourcc;
 927         f->fmt.pix.bytesperline =
 928                 (f->fmt.pix.width * fh->fmt->depth) >> 3;
 929         f->fmt.pix.sizeimage =
 930                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 931
 932         return 0;
 933 }
 934
 935 static struct tm6000_fmt *format_by_fourcc(unsigned int fourcc)
 936 {
 937         unsigned int i;
 938
 939         for (i = 0; i < ARRAY_SIZE(format); i++)
 940                 if (format[i].fourcc == fourcc)
 941                         return format+i;
 942         return NULL;
 943 }
 944
 945 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 946                         struct v4l2_format *f)
 947 {
 948         struct tm6000_core *dev = ((struct tm6000_fh *)priv)->dev;
 949         struct tm6000_fmt *fmt;
 950         enum v4l2_field field;
 951
 952         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 953         if (NULL == fmt) {
 954                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Fourcc format (0x%08x)"
 955                                 " invalid.\n", f->fmt.pix.pixelformat);
 956                 return -EINVAL;
 957         }
 958
 959         field = f->fmt.pix.field;
 960
 961         if (field == V4L2_FIELD_ANY)
 962                 field = V4L2_FIELD_SEQ_TB;
 963         else if (V4L2_FIELD_INTERLACED != field) {
 964                 dprintk(dev, V4L2_DEBUG_IOCTL_ARG, "Field type invalid.\n");
 965                 return -EINVAL;
 966         }
 967
 968         tm6000_get_std_res(dev);
 969
 970         f->fmt.pix.width  = dev->width;
 971         f->fmt.pix.height = dev->height;
 972
 973         f->fmt.pix.width &= ~0x01;
 974
 975         f->fmt.pix.field = field;
 976
 977         f->fmt.pix.bytesperline =
 978                 (f->fmt.pix.width * fmt->depth) >> 3;
 979         f->fmt.pix.sizeimage =
 980                 f->fmt.pix.height * f->fmt.pix.bytesperline;
 981
 982         return 0;
 983 }
 984
 985 /*FIXME: This seems to be generic enough to be at videodev2 */
 986 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 987                                         struct v4l2_format *f)
 988 {
 989         struct tm6000_fh  *fh = priv;
 990         struct tm6000_core *dev = fh->dev;
 991         int ret = vidioc_try_fmt_vid_cap(file, fh, f);
 992         if (ret < 0)
 993                 return ret;
 994
 995         fh->fmt           = format_by_fourcc(f->fmt.pix.pixelformat);
 996         fh->width         = f->fmt.pix.width;
 997         fh->height        = f->fmt.pix.height;
 998         fh->vb_vidq.field = f->fmt.pix.field;
 999         fh->type          = f->type;
1000
1001         dev->fourcc       = f->fmt.pix.pixelformat;
1002
1003         tm6000_set_fourcc_format(dev);
1004
1005         return 0;
1006 }
1007
1008 static int vidioc_reqbufs(struct file *file, void *priv,
1009                            struct v4l2_requestbuffers *p)
1010 {
1011         struct tm6000_fh  *fh = priv;
1012
1013         return videobuf_reqbufs(&fh->vb_vidq, p);
1014 }
1015
1016 static int vidioc_querybuf(struct file *file, void *priv,
1017                             struct v4l2_buffer *p)
1018 {
1019         struct tm6000_fh  *fh = priv;
1020
1021         return videobuf_querybuf(&fh->vb_vidq, p);
1022 }
1023
1024 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1025 {
1026         struct tm6000_fh  *fh = priv;
1027
1028         return videobuf_qbuf(&fh->vb_vidq, p);
1029 }
1030
1031 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1032 {
1033         struct tm6000_fh  *fh = priv;
1034
1035         return videobuf_dqbuf(&fh->vb_vidq, p,
1036                                 file->f_flags & O_NONBLOCK);
1037 }
1038
1039 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1040 {
1041         struct tm6000_fh  *fh = priv;
1042         struct tm6000_core *dev    = fh->dev;
1043
1044         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1045                 return -EINVAL;
1046         if (i != fh->type)
1047                 return -EINVAL;
1048
1049         if (!res_get(dev, fh, false))
1050                 return -EBUSY;
1051         return (videobuf_streamon(&fh->vb_vidq));
1052 }
1053
1054 static int vidioc_streamoff(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         videobuf_streamoff(&fh->vb_vidq);
1065         res_free(dev,fh);
1066
1067         return (0);
1068 }
1069
1070 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *norm)
1071 {
1072         int rc=0;
1073         struct tm6000_fh   *fh=priv;
1074         struct tm6000_core *dev = fh->dev;
1075
1076         dev->norm = *norm;
1077         rc = tm6000_init_analog_mode(dev);
1078
1079         fh->width  = dev->width;
1080         fh->height = dev->height;
1081
1082         if (rc<0)
1083                 return rc;
1084
1085         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, dev->norm);
1086
1087         return 0;
1088 }
1089
1090 static const char *iname [] = {
1091         [TM6000_INPUT_TV] = "Television",
1092         [TM6000_INPUT_COMPOSITE1] = "Composite 1",
1093         [TM6000_INPUT_COMPOSITE2] = "Composite 2",
1094         [TM6000_INPUT_SVIDEO] = "S-Video",
1095 };
1096
1097 static int vidioc_enum_input(struct file *file, void *priv,
1098                                 struct v4l2_input *i)
1099 {
1100         struct tm6000_fh   *fh = priv;
1101         struct tm6000_core *dev = fh->dev;
1102         unsigned int n;
1103
1104         n = i->index;
1105         if (n >= 3)
1106                 return -EINVAL;
1107
1108         if (!dev->vinput[n].type)
1109                 return -EINVAL;
1110
1111         i->index = n;
1112
1113         if (dev->vinput[n].type == TM6000_INPUT_TV)
1114                 i->type = V4L2_INPUT_TYPE_TUNER;
1115         else
1116                 i->type = V4L2_INPUT_TYPE_CAMERA;
1117
1118         strcpy(i->name, iname[dev->vinput[n].type]);
1119
1120         i->std = TM6000_STD;
1121
1122         return 0;
1123 }
1124
1125 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1126 {
1127         struct tm6000_fh   *fh = priv;
1128         struct tm6000_core *dev = fh->dev;
1129
1130         *i = dev->input;
1131
1132         return 0;
1133 }
1134
1135 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1136 {
1137         struct tm6000_fh   *fh = priv;
1138         struct tm6000_core *dev = fh->dev;
1139         int rc = 0;
1140
1141         if (i >= 3)
1142                 return -EINVAL;
1143         if (!dev->vinput[i].type)
1144                 return -EINVAL;
1145
1146         dev->input = i;
1147
1148         rc = vidioc_s_std(file, priv, &dev->vfd->current_norm);
1149
1150         return rc;
1151 }
1152
1153 /* --- controls ---------------------------------------------- */
1154 static int vidioc_queryctrl(struct file *file, void *priv,
1155                                 struct v4l2_queryctrl *qc)
1156 {
1157         int i;
1158
1159         for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1160                 if (qc->id && qc->id == tm6000_qctrl[i].id) {
1161                         memcpy(qc, &(tm6000_qctrl[i]),
1162                                 sizeof(*qc));
1163                         return 0;
1164                 }
1165
1166         return -EINVAL;
1167 }
1168
1169 static int vidioc_g_ctrl(struct file *file, void *priv,
1170                                 struct v4l2_control *ctrl)
1171 {
1172         struct tm6000_fh  *fh = priv;
1173         struct tm6000_core *dev    = fh->dev;
1174         int  val;
1175
1176         /* FIXME: Probably, those won't work! Maybe we need shadow regs */
1177         switch (ctrl->id) {
1178         case V4L2_CID_CONTRAST:
1179                 val = tm6000_get_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, 0);
1180                 break;
1181         case V4L2_CID_BRIGHTNESS:
1182                 val = tm6000_get_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, 0);
1183                 return 0;
1184         case V4L2_CID_SATURATION:
1185                 val = tm6000_get_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, 0);
1186                 return 0;
1187         case V4L2_CID_HUE:
1188                 val = tm6000_get_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, 0);
1189                 return 0;
1190         case V4L2_CID_AUDIO_MUTE:
1191                 val = dev->ctl_mute;
1192                 return 0;
1193         case V4L2_CID_AUDIO_VOLUME:
1194                 val = dev->ctl_volume;
1195                 return 0;
1196         default:
1197                 return -EINVAL;
1198         }
1199
1200         if (val < 0)
1201                 return val;
1202
1203         ctrl->value = val;
1204
1205         return 0;
1206 }
1207 static int vidioc_s_ctrl(struct file *file, void *priv,
1208                                 struct v4l2_control *ctrl)
1209 {
1210         struct tm6000_fh   *fh  = priv;
1211         struct tm6000_core *dev = fh->dev;
1212         u8  val = ctrl->value;
1213
1214         switch (ctrl->id) {
1215         case V4L2_CID_CONTRAST:
1216                 tm6000_set_reg(dev, TM6010_REQ07_R08_LUMA_CONTRAST_ADJ, val);
1217                 return 0;
1218         case V4L2_CID_BRIGHTNESS:
1219                 tm6000_set_reg(dev, TM6010_REQ07_R09_LUMA_BRIGHTNESS_ADJ, val);
1220                 return 0;
1221         case V4L2_CID_SATURATION:
1222                 tm6000_set_reg(dev, TM6010_REQ07_R0A_CHROMA_SATURATION_ADJ, val);
1223                 return 0;
1224         case V4L2_CID_HUE:
1225                 tm6000_set_reg(dev, TM6010_REQ07_R0B_CHROMA_HUE_PHASE_ADJ, val);
1226                 return 0;
1227         case V4L2_CID_AUDIO_MUTE:
1228                 dev->ctl_mute = val;
1229                 tm6000_tvaudio_set_mute(dev, val);
1230                 return 0;
1231         case V4L2_CID_AUDIO_VOLUME:
1232                 dev->ctl_volume = val;
1233                 tm6000_set_volume(dev, val);
1234                 return 0;
1235         }
1236         return -EINVAL;
1237 }
1238
1239 static int vidioc_g_tuner(struct file *file, void *priv,
1240                                 struct v4l2_tuner *t)
1241 {
1242         struct tm6000_fh   *fh  = priv;
1243         struct tm6000_core *dev = fh->dev;
1244
1245         if (unlikely(UNSET == dev->tuner_type))
1246                 return -EINVAL;
1247         if (0 != t->index)
1248                 return -EINVAL;
1249
1250         strcpy(t->name, "Television");
1251         t->type       = V4L2_TUNER_ANALOG_TV;
1252         t->capability = V4L2_TUNER_CAP_NORM;
1253         t->rangehigh  = 0xffffffffUL;
1254         t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1255
1256         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1257
1258         t->audmode = dev->amode;
1259
1260         return 0;
1261 }
1262
1263 static int vidioc_s_tuner(struct file *file, void *priv,
1264                                 struct v4l2_tuner *t)
1265 {
1266         struct tm6000_fh   *fh  = priv;
1267         struct tm6000_core *dev = fh->dev;
1268
1269         if (UNSET == dev->tuner_type)
1270                 return -EINVAL;
1271         if (0 != t->index)
1272                 return -EINVAL;
1273
1274         dev->amode = t->audmode;
1275         dprintk(dev, 3, "audio mode: %x\n", t->audmode);
1276
1277         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1278
1279         return 0;
1280 }
1281
1282 static int vidioc_g_frequency(struct file *file, void *priv,
1283                                 struct v4l2_frequency *f)
1284 {
1285         struct tm6000_fh   *fh  = priv;
1286         struct tm6000_core *dev = fh->dev;
1287
1288         if (unlikely(UNSET == dev->tuner_type))
1289                 return -EINVAL;
1290
1291         f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1292         f->frequency = dev->freq;
1293
1294         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
1295
1296         return 0;
1297 }
1298
1299 static int vidioc_s_frequency(struct file *file, void *priv,
1300                                 struct v4l2_frequency *f)
1301 {
1302         struct tm6000_fh   *fh  = priv;
1303         struct tm6000_core *dev = fh->dev;
1304
1305         if (unlikely(UNSET == dev->tuner_type))
1306                 return -EINVAL;
1307         if (unlikely(f->tuner != 0))
1308                 return -EINVAL;
1309         if (0 == fh->radio && V4L2_TUNER_ANALOG_TV != f->type)
1310                 return -EINVAL;
1311         if (1 == fh->radio && V4L2_TUNER_RADIO != f->type)
1312                 return -EINVAL;
1313
1314         dev->freq = f->frequency;
1315         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
1316
1317         return 0;
1318 }
1319
1320 static int radio_querycap(struct file *file, void *priv,
1321                                         struct v4l2_capability *cap)
1322 {
1323         struct tm6000_fh *fh = file->private_data;
1324         struct tm6000_core *dev = fh->dev;
1325
1326         strcpy(cap->driver, "tm6000");
1327         strlcpy(cap->card, dev->name, sizeof(dev->name));
1328         sprintf(cap->bus_info, "USB%04x:%04x",
1329                 le16_to_cpu(dev->udev->descriptor.idVendor),
1330                 le16_to_cpu(dev->udev->descriptor.idProduct));
1331         cap->version = dev->dev_type;
1332         cap->capabilities = V4L2_CAP_TUNER |
1333                         V4L2_CAP_AUDIO     |
1334                         V4L2_CAP_RADIO     |
1335                         V4L2_CAP_READWRITE |
1336                         V4L2_CAP_STREAMING;
1337
1338         return 0;
1339 }
1340
1341 static int radio_g_tuner(struct file *file, void *priv,
1342                                         struct v4l2_tuner *t)
1343 {
1344         struct tm6000_fh *fh = file->private_data;
1345         struct tm6000_core *dev = fh->dev;
1346
1347         if (0 != t->index)
1348                 return -EINVAL;
1349
1350         memset(t, 0, sizeof(*t));
1351         strcpy(t->name, "Radio");
1352         t->type = V4L2_TUNER_RADIO;
1353         t->rxsubchans = V4L2_TUNER_SUB_STEREO;
1354
1355         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1356
1357         return 0;
1358 }
1359
1360 static int radio_s_tuner(struct file *file, void *priv,
1361                                         struct v4l2_tuner *t)
1362 {
1363         struct tm6000_fh *fh = file->private_data;
1364         struct tm6000_core *dev = fh->dev;
1365
1366         if (0 != t->index)
1367                 return -EINVAL;
1368
1369         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1370
1371         return 0;
1372 }
1373
1374 static int radio_enum_input(struct file *file, void *priv,
1375                                         struct v4l2_input *i)
1376 {
1377         struct tm6000_fh *fh = priv;
1378         struct tm6000_core *dev = fh->dev;
1379
1380         if (i->index != 0)
1381                 return -EINVAL;
1382
1383         if (!dev->rinput.type)
1384                 return -EINVAL;
1385
1386         strcpy(i->name, "Radio");
1387         i->type = V4L2_INPUT_TYPE_TUNER;
1388
1389         return 0;
1390 }
1391
1392 static int radio_g_input(struct file *filp, void *priv, unsigned int *i)
1393 {
1394         struct tm6000_fh *fh = priv;
1395         struct tm6000_core *dev = fh->dev;
1396
1397         if (dev->input !=5)
1398                 return -EINVAL;
1399
1400         *i = dev->input -5;
1401
1402         return 0;
1403 }
1404
1405 static int radio_g_audio(struct file *file, void *priv,
1406                                         struct v4l2_audio *a)
1407 {
1408         memset(a, 0, sizeof(*a));
1409         strcpy(a->name, "Radio");
1410         return 0;
1411 }
1412
1413 static int radio_s_audio(struct file *file, void *priv,
1414                                         struct v4l2_audio *a)
1415 {
1416         return 0;
1417 }
1418
1419 static int radio_s_input(struct file *filp, void *priv, unsigned int i)
1420 {
1421         struct tm6000_fh *fh = priv;
1422         struct tm6000_core *dev = fh->dev;
1423
1424         if (i)
1425                 return -EINVAL;
1426
1427         if (!dev->rinput.type)
1428                 return -EINVAL;
1429
1430         dev->input = i + 5;
1431
1432         return 0;
1433 }
1434
1435 static int radio_s_std(struct file *file, void *fh, v4l2_std_id *norm)
1436 {
1437         return 0;
1438 }
1439
1440 static int radio_queryctrl(struct file *file, void *priv,
1441                                         struct v4l2_queryctrl *c)
1442 {
1443         const struct v4l2_queryctrl *ctrl;
1444
1445         if (c->id <  V4L2_CID_BASE ||
1446             c->id >= V4L2_CID_LASTP1)
1447                 return -EINVAL;
1448         if (c->id == V4L2_CID_AUDIO_MUTE) {
1449                 ctrl = ctrl_by_id(c->id);
1450                 *c = *ctrl;
1451         } else
1452                 *c = no_ctrl;
1453
1454         return 0;
1455 }
1456
1457 /* ------------------------------------------------------------------
1458         File operations for the device
1459    ------------------------------------------------------------------*/
1460
1461 static int tm6000_open(struct file *file)
1462 {
1463         struct video_device *vdev = video_devdata(file);
1464         struct tm6000_core *dev = video_drvdata(file);
1465         struct tm6000_fh *fh;
1466         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1467         int i, rc;
1468         int radio = 0;
1469
1470         printk(KERN_INFO "tm6000: open called (dev=%s)\n",
1471                 video_device_node_name(vdev));
1472
1473         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
1474                 video_device_node_name(vdev));
1475
1476         switch (vdev->vfl_type) {
1477         case VFL_TYPE_GRABBER:
1478                 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1479                 break;
1480         case VFL_TYPE_VBI:
1481                 type = V4L2_BUF_TYPE_VBI_CAPTURE;
1482                 break;
1483         case VFL_TYPE_RADIO:
1484                 radio = 1;
1485                 break;
1486         }
1487
1488         /* If more than one user, mutex should be added */
1489         dev->users++;
1490
1491         dprintk(dev, V4L2_DEBUG_OPEN, "open dev=%s type=%s users=%d\n",
1492                 video_device_node_name(vdev), v4l2_type_names[type],
1493                 dev->users);
1494
1495         /* allocate + initialize per filehandle data */
1496         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1497         if (NULL == fh) {
1498                 dev->users--;
1499                 return -ENOMEM;
1500         }
1501
1502         file->private_data = fh;
1503         fh->dev      = dev;
1504         fh->radio    = radio;
1505         dev->radio   = radio;
1506         fh->type     = type;
1507         dev->fourcc  = format[0].fourcc;
1508
1509         fh->fmt      = format_by_fourcc(dev->fourcc);
1510
1511         tm6000_get_std_res (dev);
1512
1513         fh->width    = dev->width;
1514         fh->height   = dev->height;
1515
1516         dprintk(dev, V4L2_DEBUG_OPEN, "Open: fh=0x%08lx, dev=0x%08lx, "
1517                                                 "dev->vidq=0x%08lx\n",
1518                 (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq);
1519         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1520                                 "queued=%d\n",list_empty(&dev->vidq.queued));
1521         dprintk(dev, V4L2_DEBUG_OPEN, "Open: list_empty "
1522                                 "active=%d\n",list_empty(&dev->vidq.active));
1523
1524         /* initialize hardware on analog mode */
1525         rc = tm6000_init_analog_mode(dev);
1526         if (rc < 0)
1527                 return rc;
1528
1529         if (dev->mode != TM6000_MODE_ANALOG) {
1530                 /* Put all controls at a sane state */
1531                 for (i = 0; i < ARRAY_SIZE(tm6000_qctrl); i++)
1532                         qctl_regs[i] = tm6000_qctrl[i].default_value;
1533
1534                 dev->mode = TM6000_MODE_ANALOG;
1535         }
1536
1537         videobuf_queue_vmalloc_init(&fh->vb_vidq, &tm6000_video_qops,
1538                         NULL, &dev->slock,
1539                         fh->type,
1540                         V4L2_FIELD_INTERLACED,
1541                         sizeof(struct tm6000_buffer), fh, &dev->lock);
1542
1543         if (fh->radio) {
1544                 dprintk(dev, V4L2_DEBUG_OPEN, "video_open: setting radio device\n");
1545                 dev->input = 5;
1546                 tm6000_set_audio_rinput(dev);
1547                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
1548                 tm6000_prepare_isoc(dev);
1549                 tm6000_start_thread(dev);
1550         }
1551
1552         return 0;
1553 }
1554
1555 static ssize_t
1556 tm6000_read(struct file *file, char __user *data, size_t count, loff_t *pos)
1557 {
1558         struct tm6000_fh        *fh = file->private_data;
1559
1560         if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1561                 if (!res_get(fh->dev, fh, true))
1562                         return -EBUSY;
1563
1564                 return videobuf_read_stream(&fh->vb_vidq, data, count, pos, 0,
1565                                         file->f_flags & O_NONBLOCK);
1566         }
1567         return 0;
1568 }
1569
1570 static unsigned int
1571 tm6000_poll(struct file *file, struct poll_table_struct *wait)
1572 {
1573         struct tm6000_fh        *fh = file->private_data;
1574         struct tm6000_buffer    *buf;
1575
1576         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1577                 return POLLERR;
1578
1579         if (!!is_res_streaming(fh->dev, fh))
1580                 return POLLERR;
1581
1582         if (!is_res_read(fh->dev, fh)) {
1583                 /* streaming capture */
1584                 if (list_empty(&fh->vb_vidq.stream))
1585                         return POLLERR;
1586                 buf = list_entry(fh->vb_vidq.stream.next,struct tm6000_buffer,vb.stream);
1587         } else {
1588                 /* read() capture */
1589                 return videobuf_poll_stream(file, &fh->vb_vidq,
1590                                             wait);
1591         }
1592         poll_wait(file, &buf->vb.done, wait);
1593         if (buf->vb.state == VIDEOBUF_DONE ||
1594             buf->vb.state == VIDEOBUF_ERROR)
1595                 return POLLIN | POLLRDNORM;
1596         return 0;
1597 }
1598
1599 static int tm6000_release(struct file *file)
1600 {
1601         struct tm6000_fh         *fh = file->private_data;
1602         struct tm6000_core      *dev = fh->dev;
1603         struct video_device    *vdev = video_devdata(file);
1604
1605         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: close called (dev=%s, users=%d)\n",
1606                 video_device_node_name(vdev), dev->users);
1607
1608         dev->users--;
1609
1610         res_free(dev, fh);
1611         if (!dev->users) {
1612                 tm6000_uninit_isoc(dev);
1613                 videobuf_mmap_free(&fh->vb_vidq);
1614         }
1615
1616         kfree(fh);
1617
1618         return 0;
1619 }
1620
1621 static int tm6000_mmap(struct file *file, struct vm_area_struct * vma)
1622 {
1623         struct tm6000_fh        *fh = file->private_data;
1624         int ret;
1625
1626         ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1627
1628         return ret;
1629 }
1630
1631 static struct v4l2_file_operations tm6000_fops = {
1632         .owner          = THIS_MODULE,
1633         .open           = tm6000_open,
1634         .release        = tm6000_release,
1635         .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1636         .read           = tm6000_read,
1637         .poll           = tm6000_poll,
1638         .mmap           = tm6000_mmap,
1639 };
1640
1641 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1642         .vidioc_querycap          = vidioc_querycap,
1643         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1644         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1645         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1646         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1647         .vidioc_s_std             = vidioc_s_std,
1648         .vidioc_enum_input        = vidioc_enum_input,
1649         .vidioc_g_input           = vidioc_g_input,
1650         .vidioc_s_input           = vidioc_s_input,
1651         .vidioc_queryctrl         = vidioc_queryctrl,
1652         .vidioc_g_ctrl            = vidioc_g_ctrl,
1653         .vidioc_s_ctrl            = vidioc_s_ctrl,
1654         .vidioc_g_tuner           = vidioc_g_tuner,
1655         .vidioc_s_tuner           = vidioc_s_tuner,
1656         .vidioc_g_frequency       = vidioc_g_frequency,
1657         .vidioc_s_frequency       = vidioc_s_frequency,
1658         .vidioc_streamon          = vidioc_streamon,
1659         .vidioc_streamoff         = vidioc_streamoff,
1660         .vidioc_reqbufs           = vidioc_reqbufs,
1661         .vidioc_querybuf          = vidioc_querybuf,
1662         .vidioc_qbuf              = vidioc_qbuf,
1663         .vidioc_dqbuf             = vidioc_dqbuf,
1664 };
1665
1666 static struct video_device tm6000_template = {
1667         .name           = "tm6000",
1668         .fops           = &tm6000_fops,
1669         .ioctl_ops      = &video_ioctl_ops,
1670         .release        = video_device_release,
1671         .tvnorms        = TM6000_STD,
1672         .current_norm   = V4L2_STD_NTSC_M,
1673 };
1674
1675 static const struct v4l2_file_operations radio_fops = {
1676         .owner          = THIS_MODULE,
1677         .open           = tm6000_open,
1678         .release        = tm6000_release,
1679         .unlocked_ioctl = video_ioctl2,
1680 };
1681
1682 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1683         .vidioc_querycap        = radio_querycap,
1684         .vidioc_g_tuner         = radio_g_tuner,
1685         .vidioc_enum_input      = radio_enum_input,
1686         .vidioc_g_audio         = radio_g_audio,
1687         .vidioc_s_tuner         = radio_s_tuner,
1688         .vidioc_s_audio         = radio_s_audio,
1689         .vidioc_s_input         = radio_s_input,
1690         .vidioc_s_std           = radio_s_std,
1691         .vidioc_queryctrl       = radio_queryctrl,
1692         .vidioc_g_input         = radio_g_input,
1693         .vidioc_g_ctrl          = vidioc_g_ctrl,
1694         .vidioc_s_ctrl          = vidioc_s_ctrl,
1695         .vidioc_g_frequency     = vidioc_g_frequency,
1696         .vidioc_s_frequency     = vidioc_s_frequency,
1697 };
1698
1699 struct video_device tm6000_radio_template = {
1700         .name                   = "tm6000",
1701         .fops                   = &radio_fops,
1702         .ioctl_ops              = &radio_ioctl_ops,
1703 };
1704
1705 /* -----------------------------------------------------------------
1706  *      Initialization and module stuff
1707  * ------------------------------------------------------------------
1708  */
1709
1710 static struct video_device *vdev_init(struct tm6000_core *dev,
1711                 const struct video_device
1712                 *template, const char *type_name)
1713 {
1714         struct video_device *vfd;
1715
1716         vfd = video_device_alloc();
1717         if (NULL == vfd)
1718                 return NULL;
1719
1720         *vfd = *template;
1721         vfd->v4l2_dev = &dev->v4l2_dev;
1722         vfd->release = video_device_release;
1723         vfd->debug = tm6000_debug;
1724         vfd->lock = &dev->lock;
1725
1726         snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
1727
1728         video_set_drvdata(vfd, dev);
1729         return vfd;
1730 }
1731
1732 int tm6000_v4l2_register(struct tm6000_core *dev)
1733 {
1734         int ret = -1;
1735
1736         dev->vfd = vdev_init(dev, &tm6000_template, "video");
1737
1738         if (!dev->vfd) {
1739                 printk(KERN_INFO "%s: can't register video device\n",
1740                        dev->name);
1741                 return -ENOMEM;
1742         }
1743
1744         /* init video dma queues */
1745         INIT_LIST_HEAD(&dev->vidq.active);
1746         INIT_LIST_HEAD(&dev->vidq.queued);
1747
1748         ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
1749
1750         if (ret < 0) {
1751                 printk(KERN_INFO "%s: can't register video device\n",
1752                        dev->name);
1753                 return ret;
1754         }
1755
1756         printk(KERN_INFO "%s: registered device %s\n",
1757                dev->name, video_device_node_name(dev->vfd));
1758
1759         if (dev->caps.has_radio) {
1760                 dev->radio_dev = vdev_init(dev, &tm6000_radio_template,
1761                                                            "radio");
1762                 if (!dev->radio_dev) {
1763                         printk(KERN_INFO "%s: can't register radio device\n",
1764                                dev->name);
1765                         return ret; /* FIXME release resource */
1766                 }
1767
1768                 ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
1769                                             radio_nr);
1770                 if (ret < 0) {
1771                         printk(KERN_INFO "%s: can't register radio device\n",
1772                                dev->name);
1773                         return ret; /* FIXME release resource */
1774                 }
1775
1776                 printk(KERN_INFO "%s: registered device %s\n",
1777                        dev->name, video_device_node_name(dev->radio_dev));
1778         }
1779
1780         printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
1781         return ret;
1782 }
1783
1784 int tm6000_v4l2_unregister(struct tm6000_core *dev)
1785 {
1786         video_unregister_device(dev->vfd);
1787
1788         if (dev->radio_dev) {
1789                 if (video_is_registered(dev->radio_dev))
1790                         video_unregister_device(dev->radio_dev);
1791                 else
1792                         video_device_release(dev->radio_dev);
1793                 dev->radio_dev = NULL;
1794         }
1795
1796         return 0;
1797 }
1798
1799 int tm6000_v4l2_exit(void)
1800 {
1801         return 0;
1802 }
1803
1804 module_param(video_nr, int, 0);
1805 MODULE_PARM_DESC(video_nr, "Allow changing video device number");
1806
1807 module_param_named(debug, tm6000_debug, int, 0444);
1808 MODULE_PARM_DESC(debug, "activates debug info");
1809
1810 module_param(vid_limit, int, 0644);
1811 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
1812