drivers/media/usb/au0828/au0828-video.c

   1 /*
   2  * Auvitek AU0828 USB Bridge (Analog video support)
   3  *
   4  * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
   5  * Copyright (C) 2005-2008 Auvitek International, Ltd.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * As published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  * 02110-1301, USA.
  21  */
  22
  23 /* Developer Notes:
  24  *
  25  * The hardware scaler supported is unimplemented
  26  * AC97 audio support is unimplemented (only i2s audio mode)
  27  *
  28  */
  29
  30 #include "au0828.h"
  31
  32 #include <linux/module.h>
  33 #include <linux/slab.h>
  34 #include <linux/init.h>
  35 #include <linux/device.h>
  36 #include <media/v4l2-common.h>
  37 #include <media/v4l2-ioctl.h>
  38 #include <media/v4l2-event.h>
  39 #include <media/tuner.h>
  40 #include "au0828-reg.h"
  41
  42 static DEFINE_MUTEX(au0828_sysfs_lock);
  43
  44 /* ------------------------------------------------------------------
  45         Videobuf operations
  46    ------------------------------------------------------------------*/
  47
  48 static unsigned int isoc_debug;
  49 module_param(isoc_debug, int, 0644);
  50 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  51
  52 #define au0828_isocdbg(fmt, arg...) \
  53 do {\
  54         if (isoc_debug) { \
  55                 pr_info("au0828 %s :"fmt, \
  56                        __func__ , ##arg);          \
  57         } \
  58   } while (0)
  59
  60 static inline void i2c_gate_ctrl(struct au0828_dev *dev, int val)
  61 {
  62         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
  63                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, val);
  64 }
  65
  66 static inline void print_err_status(struct au0828_dev *dev,
  67                                     int packet, int status)
  68 {
  69         char *errmsg = "Unknown";
  70
  71         switch (status) {
  72         case -ENOENT:
  73                 errmsg = "unlinked synchronuously";
  74                 break;
  75         case -ECONNRESET:
  76                 errmsg = "unlinked asynchronuously";
  77                 break;
  78         case -ENOSR:
  79                 errmsg = "Buffer error (overrun)";
  80                 break;
  81         case -EPIPE:
  82                 errmsg = "Stalled (device not responding)";
  83                 break;
  84         case -EOVERFLOW:
  85                 errmsg = "Babble (bad cable?)";
  86                 break;
  87         case -EPROTO:
  88                 errmsg = "Bit-stuff error (bad cable?)";
  89                 break;
  90         case -EILSEQ:
  91                 errmsg = "CRC/Timeout (could be anything)";
  92                 break;
  93         case -ETIME:
  94                 errmsg = "Device does not respond";
  95                 break;
  96         }
  97         if (packet < 0) {
  98                 au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
  99         } else {
 100                 au0828_isocdbg("URB packet %d, status %d [%s].\n",
 101                                packet, status, errmsg);
 102         }
 103 }
 104
 105 static int check_dev(struct au0828_dev *dev)
 106 {
 107         if (dev->dev_state & DEV_DISCONNECTED) {
 108                 pr_info("v4l2 ioctl: device not present\n");
 109                 return -ENODEV;
 110         }
 111
 112         if (dev->dev_state & DEV_MISCONFIGURED) {
 113                 pr_info("v4l2 ioctl: device is misconfigured; "
 114                        "close and open it again\n");
 115                 return -EIO;
 116         }
 117         return 0;
 118 }
 119
 120 /*
 121  * IRQ callback, called by URB callback
 122  */
 123 static void au0828_irq_callback(struct urb *urb)
 124 {
 125         struct au0828_dmaqueue  *dma_q = urb->context;
 126         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
 127         unsigned long flags = 0;
 128         int i;
 129
 130         switch (urb->status) {
 131         case 0:             /* success */
 132         case -ETIMEDOUT:    /* NAK */
 133                 break;
 134         case -ECONNRESET:   /* kill */
 135         case -ENOENT:
 136         case -ESHUTDOWN:
 137                 au0828_isocdbg("au0828_irq_callback called: status kill\n");
 138                 return;
 139         default:            /* unknown error */
 140                 au0828_isocdbg("urb completition error %d.\n", urb->status);
 141                 break;
 142         }
 143
 144         /* Copy data from URB */
 145         spin_lock_irqsave(&dev->slock, flags);
 146         dev->isoc_ctl.isoc_copy(dev, urb);
 147         spin_unlock_irqrestore(&dev->slock, flags);
 148
 149         /* Reset urb buffers */
 150         for (i = 0; i < urb->number_of_packets; i++) {
 151                 urb->iso_frame_desc[i].status = 0;
 152                 urb->iso_frame_desc[i].actual_length = 0;
 153         }
 154         urb->status = 0;
 155
 156         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 157         if (urb->status) {
 158                 au0828_isocdbg("urb resubmit failed (error=%i)\n",
 159                                urb->status);
 160         }
 161         dev->stream_state = STREAM_ON;
 162 }
 163
 164 /*
 165  * Stop and Deallocate URBs
 166  */
 167 static void au0828_uninit_isoc(struct au0828_dev *dev)
 168 {
 169         struct urb *urb;
 170         int i;
 171
 172         au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
 173
 174         dev->isoc_ctl.nfields = -1;
 175         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 176                 urb = dev->isoc_ctl.urb[i];
 177                 if (urb) {
 178                         if (!irqs_disabled())
 179                                 usb_kill_urb(urb);
 180                         else
 181                                 usb_unlink_urb(urb);
 182
 183                         if (dev->isoc_ctl.transfer_buffer[i]) {
 184                                 usb_free_coherent(dev->usbdev,
 185                                         urb->transfer_buffer_length,
 186                                         dev->isoc_ctl.transfer_buffer[i],
 187                                         urb->transfer_dma);
 188                         }
 189                         usb_free_urb(urb);
 190                         dev->isoc_ctl.urb[i] = NULL;
 191                 }
 192                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 193         }
 194
 195         kfree(dev->isoc_ctl.urb);
 196         kfree(dev->isoc_ctl.transfer_buffer);
 197
 198         dev->isoc_ctl.urb = NULL;
 199         dev->isoc_ctl.transfer_buffer = NULL;
 200         dev->isoc_ctl.num_bufs = 0;
 201
 202         dev->stream_state = STREAM_OFF;
 203 }
 204
 205 /*
 206  * Allocate URBs and start IRQ
 207  */
 208 static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
 209                             int num_bufs, int max_pkt_size,
 210                             int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
 211 {
 212         struct au0828_dmaqueue *dma_q = &dev->vidq;
 213         int i;
 214         int sb_size, pipe;
 215         struct urb *urb;
 216         int j, k;
 217         int rc;
 218
 219         au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
 220
 221         dev->isoc_ctl.isoc_copy = isoc_copy;
 222         dev->isoc_ctl.num_bufs = num_bufs;
 223
 224         dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs,  GFP_KERNEL);
 225         if (!dev->isoc_ctl.urb) {
 226                 au0828_isocdbg("cannot alloc memory for usb buffers\n");
 227                 return -ENOMEM;
 228         }
 229
 230         dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
 231                                               GFP_KERNEL);
 232         if (!dev->isoc_ctl.transfer_buffer) {
 233                 au0828_isocdbg("cannot allocate memory for usb transfer\n");
 234                 kfree(dev->isoc_ctl.urb);
 235                 return -ENOMEM;
 236         }
 237
 238         dev->isoc_ctl.max_pkt_size = max_pkt_size;
 239         dev->isoc_ctl.buf = NULL;
 240
 241         sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
 242
 243         /* allocate urbs and transfer buffers */
 244         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 245                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 246                 if (!urb) {
 247                         au0828_isocdbg("cannot alloc isoc_ctl.urb %i\n", i);
 248                         au0828_uninit_isoc(dev);
 249                         return -ENOMEM;
 250                 }
 251                 dev->isoc_ctl.urb[i] = urb;
 252
 253                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev,
 254                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 255                 if (!dev->isoc_ctl.transfer_buffer[i]) {
 256                         printk("unable to allocate %i bytes for transfer"
 257                                         " buffer %i%s\n",
 258                                         sb_size, i,
 259                                         in_interrupt() ? " while in int" : "");
 260                         au0828_uninit_isoc(dev);
 261                         return -ENOMEM;
 262                 }
 263                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
 264
 265                 pipe = usb_rcvisocpipe(dev->usbdev,
 266                                        dev->isoc_in_endpointaddr),
 267
 268                 usb_fill_int_urb(urb, dev->usbdev, pipe,
 269                                  dev->isoc_ctl.transfer_buffer[i], sb_size,
 270                                  au0828_irq_callback, dma_q, 1);
 271
 272                 urb->number_of_packets = max_packets;
 273                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 274
 275                 k = 0;
 276                 for (j = 0; j < max_packets; j++) {
 277                         urb->iso_frame_desc[j].offset = k;
 278                         urb->iso_frame_desc[j].length =
 279                                                 dev->isoc_ctl.max_pkt_size;
 280                         k += dev->isoc_ctl.max_pkt_size;
 281                 }
 282         }
 283
 284         /* submit urbs and enables IRQ */
 285         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 286                 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 287                 if (rc) {
 288                         au0828_isocdbg("submit of urb %i failed (error=%i)\n",
 289                                        i, rc);
 290                         au0828_uninit_isoc(dev);
 291                         return rc;
 292                 }
 293         }
 294
 295         return 0;
 296 }
 297
 298 /*
 299  * Announces that a buffer were filled and request the next
 300  */
 301 static inline void buffer_filled(struct au0828_dev *dev,
 302                                  struct au0828_dmaqueue *dma_q,
 303                                  struct au0828_buffer *buf)
 304 {
 305         struct vb2_v4l2_buffer *vb = &buf->vb;
 306         struct vb2_queue *q = vb->vb2_buf.vb2_queue;
 307
 308         /* Advice that buffer was filled */
 309         au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
 310
 311         if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 312                 vb->sequence = dev->frame_count++;
 313         else
 314                 vb->sequence = dev->vbi_frame_count++;
 315
 316         vb->field = V4L2_FIELD_INTERLACED;
 317         vb->vb2_buf.timestamp = ktime_get_ns();
 318         vb2_buffer_done(&vb->vb2_buf, VB2_BUF_STATE_DONE);
 319 }
 320
 321 /*
 322  * Identify the buffer header type and properly handles
 323  */
 324 static void au0828_copy_video(struct au0828_dev *dev,
 325                               struct au0828_dmaqueue  *dma_q,
 326                               struct au0828_buffer *buf,
 327                               unsigned char *p,
 328                               unsigned char *outp, unsigned long len)
 329 {
 330         void *fieldstart, *startwrite, *startread;
 331         int  linesdone, currlinedone, offset, lencopy, remain;
 332         int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
 333
 334         if (len == 0)
 335                 return;
 336
 337         if (dma_q->pos + len > buf->length)
 338                 len = buf->length - dma_q->pos;
 339
 340         startread = p;
 341         remain = len;
 342
 343         /* Interlaces frame */
 344         if (buf->top_field)
 345                 fieldstart = outp;
 346         else
 347                 fieldstart = outp + bytesperline;
 348
 349         linesdone = dma_q->pos / bytesperline;
 350         currlinedone = dma_q->pos % bytesperline;
 351         offset = linesdone * bytesperline * 2 + currlinedone;
 352         startwrite = fieldstart + offset;
 353         lencopy = bytesperline - currlinedone;
 354         lencopy = lencopy > remain ? remain : lencopy;
 355
 356         if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
 357                 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 358                                ((char *)startwrite + lencopy) -
 359                                ((char *)outp + buf->length));
 360                 remain = (char *)outp + buf->length - (char *)startwrite;
 361                 lencopy = remain;
 362         }
 363         if (lencopy <= 0)
 364                 return;
 365         memcpy(startwrite, startread, lencopy);
 366
 367         remain -= lencopy;
 368
 369         while (remain > 0) {
 370                 startwrite += lencopy + bytesperline;
 371                 startread += lencopy;
 372                 if (bytesperline > remain)
 373                         lencopy = remain;
 374                 else
 375                         lencopy = bytesperline;
 376
 377                 if ((char *)startwrite + lencopy > (char *)outp +
 378                     buf->length) {
 379                         au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
 380                                        ((char *)startwrite + lencopy) -
 381                                        ((char *)outp + buf->length));
 382                         lencopy = remain = (char *)outp + buf->length -
 383                                            (char *)startwrite;
 384                 }
 385                 if (lencopy <= 0)
 386                         break;
 387
 388                 memcpy(startwrite, startread, lencopy);
 389
 390                 remain -= lencopy;
 391         }
 392
 393         if (offset > 1440) {
 394                 /* We have enough data to check for greenscreen */
 395                 if (outp[0] < 0x60 && outp[1440] < 0x60)
 396                         dev->greenscreen_detected = 1;
 397         }
 398
 399         dma_q->pos += len;
 400 }
 401
 402 /*
 403  * video-buf generic routine to get the next available buffer
 404  */
 405 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
 406                                 struct au0828_buffer **buf)
 407 {
 408         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
 409
 410         if (list_empty(&dma_q->active)) {
 411                 au0828_isocdbg("No active queue to serve\n");
 412                 dev->isoc_ctl.buf = NULL;
 413                 *buf = NULL;
 414                 return;
 415         }
 416
 417         /* Get the next buffer */
 418         *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
 419         /* Cleans up buffer - Useful for testing for frame/URB loss */
 420         list_del(&(*buf)->list);
 421         dma_q->pos = 0;
 422         (*buf)->vb_buf = (*buf)->mem;
 423         dev->isoc_ctl.buf = *buf;
 424
 425         return;
 426 }
 427
 428 static void au0828_copy_vbi(struct au0828_dev *dev,
 429                               struct au0828_dmaqueue  *dma_q,
 430                               struct au0828_buffer *buf,
 431                               unsigned char *p,
 432                               unsigned char *outp, unsigned long len)
 433 {
 434         unsigned char *startwrite, *startread;
 435         int bytesperline;
 436         int i, j = 0;
 437
 438         if (dev == NULL) {
 439                 au0828_isocdbg("dev is null\n");
 440                 return;
 441         }
 442
 443         if (dma_q == NULL) {
 444                 au0828_isocdbg("dma_q is null\n");
 445                 return;
 446         }
 447         if (buf == NULL)
 448                 return;
 449         if (p == NULL) {
 450                 au0828_isocdbg("p is null\n");
 451                 return;
 452         }
 453         if (outp == NULL) {
 454                 au0828_isocdbg("outp is null\n");
 455                 return;
 456         }
 457
 458         bytesperline = dev->vbi_width;
 459
 460         if (dma_q->pos + len > buf->length)
 461                 len = buf->length - dma_q->pos;
 462
 463         startread = p;
 464         startwrite = outp + (dma_q->pos / 2);
 465
 466         /* Make sure the bottom field populates the second half of the frame */
 467         if (buf->top_field == 0)
 468                 startwrite += bytesperline * dev->vbi_height;
 469
 470         for (i = 0; i < len; i += 2)
 471                 startwrite[j++] = startread[i+1];
 472
 473         dma_q->pos += len;
 474 }
 475
 476
 477 /*
 478  * video-buf generic routine to get the next available VBI buffer
 479  */
 480 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
 481                                     struct au0828_buffer **buf)
 482 {
 483         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
 484
 485         if (list_empty(&dma_q->active)) {
 486                 au0828_isocdbg("No active queue to serve\n");
 487                 dev->isoc_ctl.vbi_buf = NULL;
 488                 *buf = NULL;
 489                 return;
 490         }
 491
 492         /* Get the next buffer */
 493         *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
 494         /* Cleans up buffer - Useful for testing for frame/URB loss */
 495         list_del(&(*buf)->list);
 496         dma_q->pos = 0;
 497         (*buf)->vb_buf = (*buf)->mem;
 498         dev->isoc_ctl.vbi_buf = *buf;
 499         return;
 500 }
 501
 502 /*
 503  * Controls the isoc copy of each urb packet
 504  */
 505 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
 506 {
 507         struct au0828_buffer    *buf;
 508         struct au0828_buffer    *vbi_buf;
 509         struct au0828_dmaqueue  *dma_q = urb->context;
 510         struct au0828_dmaqueue  *vbi_dma_q = &dev->vbiq;
 511         unsigned char *outp = NULL;
 512         unsigned char *vbioutp = NULL;
 513         int i, len = 0, rc = 1;
 514         unsigned char *p;
 515         unsigned char fbyte;
 516         unsigned int vbi_field_size;
 517         unsigned int remain, lencopy;
 518
 519         if (!dev)
 520                 return 0;
 521
 522         if ((dev->dev_state & DEV_DISCONNECTED) ||
 523             (dev->dev_state & DEV_MISCONFIGURED))
 524                 return 0;
 525
 526         if (urb->status < 0) {
 527                 print_err_status(dev, -1, urb->status);
 528                 if (urb->status == -ENOENT)
 529                         return 0;
 530         }
 531
 532         buf = dev->isoc_ctl.buf;
 533         if (buf != NULL)
 534                 outp = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 535
 536         vbi_buf = dev->isoc_ctl.vbi_buf;
 537         if (vbi_buf != NULL)
 538                 vbioutp = vb2_plane_vaddr(&vbi_buf->vb.vb2_buf, 0);
 539
 540         for (i = 0; i < urb->number_of_packets; i++) {
 541                 int status = urb->iso_frame_desc[i].status;
 542
 543                 if (status < 0) {
 544                         print_err_status(dev, i, status);
 545                         if (urb->iso_frame_desc[i].status != -EPROTO)
 546                                 continue;
 547                 }
 548
 549                 if (urb->iso_frame_desc[i].actual_length <= 0)
 550                         continue;
 551
 552                 if (urb->iso_frame_desc[i].actual_length >
 553                                                 dev->max_pkt_size) {
 554                         au0828_isocdbg("packet bigger than packet size");
 555                         continue;
 556                 }
 557
 558                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 559                 fbyte = p[0];
 560                 len = urb->iso_frame_desc[i].actual_length - 4;
 561                 p += 4;
 562
 563                 if (fbyte & 0x80) {
 564                         len -= 4;
 565                         p += 4;
 566                         au0828_isocdbg("Video frame %s\n",
 567                                        (fbyte & 0x40) ? "odd" : "even");
 568                         if (fbyte & 0x40) {
 569                                 /* VBI */
 570                                 if (vbi_buf != NULL)
 571                                         buffer_filled(dev, vbi_dma_q, vbi_buf);
 572                                 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
 573                                 if (vbi_buf == NULL)
 574                                         vbioutp = NULL;
 575                                 else
 576                                         vbioutp = vb2_plane_vaddr(
 577                                                 &vbi_buf->vb.vb2_buf, 0);
 578
 579                                 /* Video */
 580                                 if (buf != NULL)
 581                                         buffer_filled(dev, dma_q, buf);
 582                                 get_next_buf(dma_q, &buf);
 583                                 if (buf == NULL)
 584                                         outp = NULL;
 585                                 else
 586                                         outp = vb2_plane_vaddr(
 587                                                 &buf->vb.vb2_buf, 0);
 588
 589                                 /* As long as isoc traffic is arriving, keep
 590                                    resetting the timer */
 591                                 if (dev->vid_timeout_running)
 592                                         mod_timer(&dev->vid_timeout,
 593                                                   jiffies + (HZ / 10));
 594                                 if (dev->vbi_timeout_running)
 595                                         mod_timer(&dev->vbi_timeout,
 596                                                   jiffies + (HZ / 10));
 597                         }
 598
 599                         if (buf != NULL) {
 600                                 if (fbyte & 0x40)
 601                                         buf->top_field = 1;
 602                                 else
 603                                         buf->top_field = 0;
 604                         }
 605
 606                         if (vbi_buf != NULL) {
 607                                 if (fbyte & 0x40)
 608                                         vbi_buf->top_field = 1;
 609                                 else
 610                                         vbi_buf->top_field = 0;
 611                         }
 612
 613                         dev->vbi_read = 0;
 614                         vbi_dma_q->pos = 0;
 615                         dma_q->pos = 0;
 616                 }
 617
 618                 vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
 619                 if (dev->vbi_read < vbi_field_size) {
 620                         remain  = vbi_field_size - dev->vbi_read;
 621                         if (len < remain)
 622                                 lencopy = len;
 623                         else
 624                                 lencopy = remain;
 625
 626                         if (vbi_buf != NULL)
 627                                 au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
 628                                                 vbioutp, len);
 629
 630                         len -= lencopy;
 631                         p += lencopy;
 632                         dev->vbi_read += lencopy;
 633                 }
 634
 635                 if (dev->vbi_read >= vbi_field_size && buf != NULL)
 636                         au0828_copy_video(dev, dma_q, buf, p, outp, len);
 637         }
 638         return rc;
 639 }
 640
 641 static int au0828_enable_analog_tuner(struct au0828_dev *dev)
 642 {
 643 #ifdef CONFIG_MEDIA_CONTROLLER
 644         struct media_device *mdev = dev->media_dev;
 645         struct media_entity *source;
 646         struct media_link *link, *found_link = NULL;
 647         int ret, active_links = 0;
 648
 649         if (!mdev || !dev->decoder)
 650                 return 0;
 651
 652         /*
 653          * This will find the tuner that is connected into the decoder.
 654          * Technically, this is not 100% correct, as the device may be
 655          * using an analog input instead of the tuner. However, as we can't
 656          * do DVB streaming while the DMA engine is being used for V4L2,
 657          * this should be enough for the actual needs.
 658          */
 659         list_for_each_entry(link, &dev->decoder->links, list) {
 660                 if (link->sink->entity == dev->decoder) {
 661                         found_link = link;
 662                         if (link->flags & MEDIA_LNK_FL_ENABLED)
 663                                 active_links++;
 664                         break;
 665                 }
 666         }
 667
 668         if (active_links == 1 || !found_link)
 669                 return 0;
 670
 671         source = found_link->source->entity;
 672         list_for_each_entry(link, &source->links, list) {
 673                 struct media_entity *sink;
 674                 int flags = 0;
 675
 676                 sink = link->sink->entity;
 677
 678                 if (sink == dev->decoder)
 679                         flags = MEDIA_LNK_FL_ENABLED;
 680
 681                 ret = media_entity_setup_link(link, flags);
 682                 if (ret) {
 683                         pr_err(
 684                                 "Couldn't change link %s->%s to %s. Error %d\n",
 685                                 source->name, sink->name,
 686                                 flags ? "enabled" : "disabled",
 687                                 ret);
 688                         return ret;
 689                 } else
 690                         au0828_isocdbg(
 691                                 "link %s->%s was %s\n",
 692                                 source->name, sink->name,
 693                                 flags ? "ENABLED" : "disabled");
 694         }
 695 #endif
 696         return 0;
 697 }
 698
 699 static int queue_setup(struct vb2_queue *vq,
 700                        unsigned int *nbuffers, unsigned int *nplanes,
 701                        unsigned int sizes[], void *alloc_ctxs[])
 702 {
 703         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 704         unsigned long size = dev->height * dev->bytesperline;
 705
 706         if (*nplanes)
 707                 return sizes[0] < size ? -EINVAL : 0;
 708         *nplanes = 1;
 709         sizes[0] = size;
 710
 711         au0828_enable_analog_tuner(dev);
 712
 713         return 0;
 714 }
 715
 716 static int
 717 buffer_prepare(struct vb2_buffer *vb)
 718 {
 719         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 720         struct au0828_buffer *buf = container_of(vbuf,
 721                                 struct au0828_buffer, vb);
 722         struct au0828_dev    *dev = vb2_get_drv_priv(vb->vb2_queue);
 723
 724         buf->length = dev->height * dev->bytesperline;
 725
 726         if (vb2_plane_size(vb, 0) < buf->length) {
 727                 pr_err("%s data will not fit into plane (%lu < %lu)\n",
 728                         __func__, vb2_plane_size(vb, 0), buf->length);
 729                 return -EINVAL;
 730         }
 731         vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->length);
 732         return 0;
 733 }
 734
 735 static void
 736 buffer_queue(struct vb2_buffer *vb)
 737 {
 738         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 739         struct au0828_buffer    *buf     = container_of(vbuf,
 740                                                         struct au0828_buffer,
 741                                                         vb);
 742         struct au0828_dev       *dev     = vb2_get_drv_priv(vb->vb2_queue);
 743         struct au0828_dmaqueue  *vidq    = &dev->vidq;
 744         unsigned long flags = 0;
 745
 746         buf->mem = vb2_plane_vaddr(vb, 0);
 747         buf->length = vb2_plane_size(vb, 0);
 748
 749         spin_lock_irqsave(&dev->slock, flags);
 750         list_add_tail(&buf->list, &vidq->active);
 751         spin_unlock_irqrestore(&dev->slock, flags);
 752 }
 753
 754 static int au0828_i2s_init(struct au0828_dev *dev)
 755 {
 756         /* Enable i2s mode */
 757         au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
 758         return 0;
 759 }
 760
 761 /*
 762  * Auvitek au0828 analog stream enable
 763  */
 764 static int au0828_analog_stream_enable(struct au0828_dev *d)
 765 {
 766         struct usb_interface *iface;
 767         int ret, h, w;
 768
 769         dprintk(1, "au0828_analog_stream_enable called\n");
 770
 771         iface = usb_ifnum_to_if(d->usbdev, 0);
 772         if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
 773                 dprintk(1, "Changing intf#0 to alt 5\n");
 774                 /* set au0828 interface0 to AS5 here again */
 775                 ret = usb_set_interface(d->usbdev, 0, 5);
 776                 if (ret < 0) {
 777                         pr_info("Au0828 can't set alt setting to 5!\n");
 778                         return -EBUSY;
 779                 }
 780         }
 781
 782         h = d->height / 2 + 2;
 783         w = d->width * 2;
 784
 785         au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
 786         au0828_writereg(d, 0x106, 0x00);
 787         /* set x position */
 788         au0828_writereg(d, 0x110, 0x00);
 789         au0828_writereg(d, 0x111, 0x00);
 790         au0828_writereg(d, 0x114, w & 0xff);
 791         au0828_writereg(d, 0x115, w >> 8);
 792         /* set y position */
 793         au0828_writereg(d, 0x112, 0x00);
 794         au0828_writereg(d, 0x113, 0x00);
 795         au0828_writereg(d, 0x116, h & 0xff);
 796         au0828_writereg(d, 0x117, h >> 8);
 797         au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
 798
 799         return 0;
 800 }
 801
 802 static int au0828_analog_stream_disable(struct au0828_dev *d)
 803 {
 804         dprintk(1, "au0828_analog_stream_disable called\n");
 805         au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
 806         return 0;
 807 }
 808
 809 static void au0828_analog_stream_reset(struct au0828_dev *dev)
 810 {
 811         dprintk(1, "au0828_analog_stream_reset called\n");
 812         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
 813         mdelay(30);
 814         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
 815 }
 816
 817 /*
 818  * Some operations needs to stop current streaming
 819  */
 820 static int au0828_stream_interrupt(struct au0828_dev *dev)
 821 {
 822         int ret = 0;
 823
 824         dev->stream_state = STREAM_INTERRUPT;
 825         if (dev->dev_state == DEV_DISCONNECTED)
 826                 return -ENODEV;
 827         else if (ret) {
 828                 dev->dev_state = DEV_MISCONFIGURED;
 829                 dprintk(1, "%s device is misconfigured!\n", __func__);
 830                 return ret;
 831         }
 832         return 0;
 833 }
 834
 835 int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
 836 {
 837         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 838         int rc = 0;
 839
 840         dprintk(1, "au0828_start_analog_streaming called %d\n",
 841                 dev->streaming_users);
 842
 843         if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 844                 dev->frame_count = 0;
 845         else
 846                 dev->vbi_frame_count = 0;
 847
 848         if (dev->streaming_users == 0) {
 849                 /* If we were doing ac97 instead of i2s, it would go here...*/
 850                 au0828_i2s_init(dev);
 851                 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
 852                                    AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
 853                                    au0828_isoc_copy);
 854                 if (rc < 0) {
 855                         pr_info("au0828_init_isoc failed\n");
 856                         return rc;
 857                 }
 858
 859                 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 860                         v4l2_device_call_all(&dev->v4l2_dev, 0, video,
 861                                                 s_stream, 1);
 862                         dev->vid_timeout_running = 1;
 863                         mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
 864                 } else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 865                         dev->vbi_timeout_running = 1;
 866                         mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
 867                 }
 868         }
 869         dev->streaming_users++;
 870         return rc;
 871 }
 872
 873 static void au0828_stop_streaming(struct vb2_queue *vq)
 874 {
 875         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 876         struct au0828_dmaqueue *vidq = &dev->vidq;
 877         unsigned long flags = 0;
 878
 879         dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
 880
 881         if (dev->streaming_users-- == 1)
 882                 au0828_uninit_isoc(dev);
 883
 884         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
 885         dev->vid_timeout_running = 0;
 886         del_timer_sync(&dev->vid_timeout);
 887
 888         spin_lock_irqsave(&dev->slock, flags);
 889         if (dev->isoc_ctl.buf != NULL) {
 890                 vb2_buffer_done(&dev->isoc_ctl.buf->vb.vb2_buf,
 891                                 VB2_BUF_STATE_ERROR);
 892                 dev->isoc_ctl.buf = NULL;
 893         }
 894         while (!list_empty(&vidq->active)) {
 895                 struct au0828_buffer *buf;
 896
 897                 buf = list_entry(vidq->active.next, struct au0828_buffer, list);
 898                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 899                 list_del(&buf->list);
 900         }
 901         spin_unlock_irqrestore(&dev->slock, flags);
 902 }
 903
 904 void au0828_stop_vbi_streaming(struct vb2_queue *vq)
 905 {
 906         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 907         struct au0828_dmaqueue *vbiq = &dev->vbiq;
 908         unsigned long flags = 0;
 909
 910         dprintk(1, "au0828_stop_vbi_streaming called %d\n",
 911                 dev->streaming_users);
 912
 913         if (dev->streaming_users-- == 1)
 914                 au0828_uninit_isoc(dev);
 915
 916         spin_lock_irqsave(&dev->slock, flags);
 917         if (dev->isoc_ctl.vbi_buf != NULL) {
 918                 vb2_buffer_done(&dev->isoc_ctl.vbi_buf->vb.vb2_buf,
 919                                 VB2_BUF_STATE_ERROR);
 920                 dev->isoc_ctl.vbi_buf = NULL;
 921         }
 922         while (!list_empty(&vbiq->active)) {
 923                 struct au0828_buffer *buf;
 924
 925                 buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
 926                 list_del(&buf->list);
 927                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 928         }
 929         spin_unlock_irqrestore(&dev->slock, flags);
 930
 931         dev->vbi_timeout_running = 0;
 932         del_timer_sync(&dev->vbi_timeout);
 933 }
 934
 935 static struct vb2_ops au0828_video_qops = {
 936         .queue_setup     = queue_setup,
 937         .buf_prepare     = buffer_prepare,
 938         .buf_queue       = buffer_queue,
 939         .start_streaming = au0828_start_analog_streaming,
 940         .stop_streaming  = au0828_stop_streaming,
 941         .wait_prepare    = vb2_ops_wait_prepare,
 942         .wait_finish     = vb2_ops_wait_finish,
 943 };
 944
 945 /* ------------------------------------------------------------------
 946    V4L2 interface
 947    ------------------------------------------------------------------*/
 948 /*
 949  * au0828_analog_unregister
 950  * unregister v4l2 devices
 951  */
 952 void au0828_analog_unregister(struct au0828_dev *dev)
 953 {
 954         dprintk(1, "au0828_analog_unregister called\n");
 955         mutex_lock(&au0828_sysfs_lock);
 956         video_unregister_device(&dev->vdev);
 957         video_unregister_device(&dev->vbi_dev);
 958         mutex_unlock(&au0828_sysfs_lock);
 959 }
 960
 961 /* This function ensures that video frames continue to be delivered even if
 962    the ITU-656 input isn't receiving any data (thereby preventing applications
 963    such as tvtime from hanging) */
 964 static void au0828_vid_buffer_timeout(unsigned long data)
 965 {
 966         struct au0828_dev *dev = (struct au0828_dev *) data;
 967         struct au0828_dmaqueue *dma_q = &dev->vidq;
 968         struct au0828_buffer *buf;
 969         unsigned char *vid_data;
 970         unsigned long flags = 0;
 971
 972         spin_lock_irqsave(&dev->slock, flags);
 973
 974         buf = dev->isoc_ctl.buf;
 975         if (buf != NULL) {
 976                 vid_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 977                 memset(vid_data, 0x00, buf->length); /* Blank green frame */
 978                 buffer_filled(dev, dma_q, buf);
 979         }
 980         get_next_buf(dma_q, &buf);
 981
 982         if (dev->vid_timeout_running == 1)
 983                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
 984
 985         spin_unlock_irqrestore(&dev->slock, flags);
 986 }
 987
 988 static void au0828_vbi_buffer_timeout(unsigned long data)
 989 {
 990         struct au0828_dev *dev = (struct au0828_dev *) data;
 991         struct au0828_dmaqueue *dma_q = &dev->vbiq;
 992         struct au0828_buffer *buf;
 993         unsigned char *vbi_data;
 994         unsigned long flags = 0;
 995
 996         spin_lock_irqsave(&dev->slock, flags);
 997
 998         buf = dev->isoc_ctl.vbi_buf;
 999         if (buf != NULL) {
1000                 vbi_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
1001                 memset(vbi_data, 0x00, buf->length);
1002                 buffer_filled(dev, dma_q, buf);
1003         }
1004         vbi_get_next_buf(dma_q, &buf);
1005
1006         if (dev->vbi_timeout_running == 1)
1007                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1008         spin_unlock_irqrestore(&dev->slock, flags);
1009 }
1010
1011 static int au0828_v4l2_open(struct file *filp)
1012 {
1013         struct au0828_dev *dev = video_drvdata(filp);
1014         int ret;
1015
1016         dprintk(1,
1017                 "%s called std_set %d dev_state %d stream users %d users %d\n",
1018                 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1019                 dev->streaming_users, dev->users);
1020
1021         if (mutex_lock_interruptible(&dev->lock))
1022                 return -ERESTARTSYS;
1023
1024         ret = v4l2_fh_open(filp);
1025         if (ret) {
1026                 au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1027                                 __func__, ret);
1028                 mutex_unlock(&dev->lock);
1029                 return ret;
1030         }
1031
1032         if (dev->users == 0) {
1033                 au0828_analog_stream_enable(dev);
1034                 au0828_analog_stream_reset(dev);
1035                 dev->stream_state = STREAM_OFF;
1036                 dev->dev_state |= DEV_INITIALIZED;
1037         }
1038         dev->users++;
1039         mutex_unlock(&dev->lock);
1040         return ret;
1041 }
1042
1043 static int au0828_v4l2_close(struct file *filp)
1044 {
1045         int ret;
1046         struct au0828_dev *dev = video_drvdata(filp);
1047         struct video_device *vdev = video_devdata(filp);
1048
1049         dprintk(1,
1050                 "%s called std_set %d dev_state %d stream users %d users %d\n",
1051                 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1052                 dev->streaming_users, dev->users);
1053
1054         mutex_lock(&dev->lock);
1055         if (vdev->vfl_type == VFL_TYPE_GRABBER && dev->vid_timeout_running) {
1056                 /* Cancel timeout thread in case they didn't call streamoff */
1057                 dev->vid_timeout_running = 0;
1058                 del_timer_sync(&dev->vid_timeout);
1059         } else if (vdev->vfl_type == VFL_TYPE_VBI &&
1060                         dev->vbi_timeout_running) {
1061                 /* Cancel timeout thread in case they didn't call streamoff */
1062                 dev->vbi_timeout_running = 0;
1063                 del_timer_sync(&dev->vbi_timeout);
1064         }
1065
1066         if (dev->dev_state == DEV_DISCONNECTED)
1067                 goto end;
1068
1069         if (dev->users == 1) {
1070                 /* Save some power by putting tuner to sleep */
1071                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
1072                 dev->std_set_in_tuner_core = 0;
1073
1074                 /* When close the device, set the usb intf0 into alt0 to free
1075                    USB bandwidth */
1076                 ret = usb_set_interface(dev->usbdev, 0, 0);
1077                 if (ret < 0)
1078                         pr_info("Au0828 can't set alternate to 0!\n");
1079         }
1080 end:
1081         _vb2_fop_release(filp, NULL);
1082         dev->users--;
1083         mutex_unlock(&dev->lock);
1084         return 0;
1085 }
1086
1087 /* Must be called with dev->lock held */
1088 static void au0828_init_tuner(struct au0828_dev *dev)
1089 {
1090         struct v4l2_frequency f = {
1091                 .frequency = dev->ctrl_freq,
1092                 .type = V4L2_TUNER_ANALOG_TV,
1093         };
1094
1095         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1096                 dev->std_set_in_tuner_core, dev->dev_state);
1097
1098         if (dev->std_set_in_tuner_core)
1099                 return;
1100         dev->std_set_in_tuner_core = 1;
1101         i2c_gate_ctrl(dev, 1);
1102         /* If we've never sent the standard in tuner core, do so now.
1103            We don't do this at device probe because we don't want to
1104            incur the cost of a firmware load */
1105         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1106         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1107         i2c_gate_ctrl(dev, 0);
1108 }
1109
1110 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1111                              struct v4l2_format *format)
1112 {
1113         int ret;
1114         int width = format->fmt.pix.width;
1115         int height = format->fmt.pix.height;
1116
1117         /* If they are demanding a format other than the one we support,
1118            bail out (tvtime asks for UYVY and then retries with YUYV) */
1119         if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1120                 return -EINVAL;
1121
1122         /* format->fmt.pix.width only support 720 and height 480 */
1123         if (width != 720)
1124                 width = 720;
1125         if (height != 480)
1126                 height = 480;
1127
1128         format->fmt.pix.width = width;
1129         format->fmt.pix.height = height;
1130         format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1131         format->fmt.pix.bytesperline = width * 2;
1132         format->fmt.pix.sizeimage = width * height * 2;
1133         format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1134         format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1135         format->fmt.pix.priv = 0;
1136
1137         if (cmd == VIDIOC_TRY_FMT)
1138                 return 0;
1139
1140         /* maybe set new image format, driver current only support 720*480 */
1141         dev->width = width;
1142         dev->height = height;
1143         dev->frame_size = width * height * 2;
1144         dev->field_size = width * height;
1145         dev->bytesperline = width * 2;
1146
1147         if (dev->stream_state == STREAM_ON) {
1148                 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1149                 ret = au0828_stream_interrupt(dev);
1150                 if (ret != 0) {
1151                         dprintk(1, "error interrupting video stream!\n");
1152                         return ret;
1153                 }
1154         }
1155
1156         au0828_analog_stream_enable(dev);
1157
1158         return 0;
1159 }
1160
1161 static int vidioc_querycap(struct file *file, void  *priv,
1162                            struct v4l2_capability *cap)
1163 {
1164         struct video_device *vdev = video_devdata(file);
1165         struct au0828_dev *dev = video_drvdata(file);
1166
1167         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1168                 dev->std_set_in_tuner_core, dev->dev_state);
1169
1170         strlcpy(cap->driver, "au0828", sizeof(cap->driver));
1171         strlcpy(cap->card, dev->board.name, sizeof(cap->card));
1172         usb_make_path(dev->usbdev, cap->bus_info, sizeof(cap->bus_info));
1173
1174         /* set the device capabilities */
1175         cap->device_caps = V4L2_CAP_AUDIO |
1176                 V4L2_CAP_READWRITE |
1177                 V4L2_CAP_STREAMING |
1178                 V4L2_CAP_TUNER;
1179         if (vdev->vfl_type == VFL_TYPE_GRABBER)
1180                 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1181         else
1182                 cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1183         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1184                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE;
1185         return 0;
1186 }
1187
1188 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1189                                         struct v4l2_fmtdesc *f)
1190 {
1191         if (f->index)
1192                 return -EINVAL;
1193
1194         dprintk(1, "%s called\n", __func__);
1195
1196         f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1197         strcpy(f->description, "Packed YUV2");
1198
1199         f->flags = 0;
1200         f->pixelformat = V4L2_PIX_FMT_UYVY;
1201
1202         return 0;
1203 }
1204
1205 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1206                                         struct v4l2_format *f)
1207 {
1208         struct au0828_dev *dev = video_drvdata(file);
1209
1210         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1211                 dev->std_set_in_tuner_core, dev->dev_state);
1212
1213         f->fmt.pix.width = dev->width;
1214         f->fmt.pix.height = dev->height;
1215         f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1216         f->fmt.pix.bytesperline = dev->bytesperline;
1217         f->fmt.pix.sizeimage = dev->frame_size;
1218         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1219         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1220         f->fmt.pix.priv = 0;
1221         return 0;
1222 }
1223
1224 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1225                                   struct v4l2_format *f)
1226 {
1227         struct au0828_dev *dev = video_drvdata(file);
1228
1229         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1230                 dev->std_set_in_tuner_core, dev->dev_state);
1231
1232         return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1233 }
1234
1235 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1236                                 struct v4l2_format *f)
1237 {
1238         struct au0828_dev *dev = video_drvdata(file);
1239         int rc;
1240
1241         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1242                 dev->std_set_in_tuner_core, dev->dev_state);
1243
1244         rc = check_dev(dev);
1245         if (rc < 0)
1246                 return rc;
1247
1248         if (vb2_is_busy(&dev->vb_vidq)) {
1249                 pr_info("%s queue busy\n", __func__);
1250                 rc = -EBUSY;
1251                 goto out;
1252         }
1253
1254         rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1255 out:
1256         return rc;
1257 }
1258
1259 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1260 {
1261         struct au0828_dev *dev = video_drvdata(file);
1262
1263         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1264                 dev->std_set_in_tuner_core, dev->dev_state);
1265
1266         if (norm == dev->std)
1267                 return 0;
1268
1269         if (dev->streaming_users > 0)
1270                 return -EBUSY;
1271
1272         dev->std = norm;
1273
1274         au0828_init_tuner(dev);
1275
1276         i2c_gate_ctrl(dev, 1);
1277
1278         /*
1279          * FIXME: when we support something other than 60Hz standards,
1280          * we are going to have to make the au0828 bridge adjust the size
1281          * of its capture buffer, which is currently hardcoded at 720x480
1282          */
1283
1284         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1285
1286         i2c_gate_ctrl(dev, 0);
1287
1288         return 0;
1289 }
1290
1291 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1292 {
1293         struct au0828_dev *dev = video_drvdata(file);
1294
1295         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1296                 dev->std_set_in_tuner_core, dev->dev_state);
1297
1298         *norm = dev->std;
1299         return 0;
1300 }
1301
1302 static int vidioc_enum_input(struct file *file, void *priv,
1303                                 struct v4l2_input *input)
1304 {
1305         struct au0828_dev *dev = video_drvdata(file);
1306         unsigned int tmp;
1307
1308         static const char *inames[] = {
1309                 [AU0828_VMUX_UNDEFINED] = "Undefined",
1310                 [AU0828_VMUX_COMPOSITE] = "Composite",
1311                 [AU0828_VMUX_SVIDEO] = "S-Video",
1312                 [AU0828_VMUX_CABLE] = "Cable TV",
1313                 [AU0828_VMUX_TELEVISION] = "Television",
1314                 [AU0828_VMUX_DVB] = "DVB",
1315                 [AU0828_VMUX_DEBUG] = "tv debug"
1316         };
1317
1318         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1319                 dev->std_set_in_tuner_core, dev->dev_state);
1320
1321         tmp = input->index;
1322
1323         if (tmp >= AU0828_MAX_INPUT)
1324                 return -EINVAL;
1325         if (AUVI_INPUT(tmp).type == 0)
1326                 return -EINVAL;
1327
1328         input->index = tmp;
1329         strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
1330         if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1331             (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1332                 input->type |= V4L2_INPUT_TYPE_TUNER;
1333                 input->audioset = 1;
1334         } else {
1335                 input->type |= V4L2_INPUT_TYPE_CAMERA;
1336                 input->audioset = 2;
1337         }
1338
1339         input->std = dev->vdev.tvnorms;
1340
1341         return 0;
1342 }
1343
1344 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1345 {
1346         struct au0828_dev *dev = video_drvdata(file);
1347
1348         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1349                 dev->std_set_in_tuner_core, dev->dev_state);
1350
1351         *i = dev->ctrl_input;
1352         return 0;
1353 }
1354
1355 static void au0828_s_input(struct au0828_dev *dev, int index)
1356 {
1357         int i;
1358
1359         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1360                 dev->std_set_in_tuner_core, dev->dev_state);
1361
1362         switch (AUVI_INPUT(index).type) {
1363         case AU0828_VMUX_SVIDEO:
1364                 dev->input_type = AU0828_VMUX_SVIDEO;
1365                 dev->ctrl_ainput = 1;
1366                 break;
1367         case AU0828_VMUX_COMPOSITE:
1368                 dev->input_type = AU0828_VMUX_COMPOSITE;
1369                 dev->ctrl_ainput = 1;
1370                 break;
1371         case AU0828_VMUX_TELEVISION:
1372                 dev->input_type = AU0828_VMUX_TELEVISION;
1373                 dev->ctrl_ainput = 0;
1374                 break;
1375         default:
1376                 dprintk(1, "unknown input type set [%d]\n",
1377                         AUVI_INPUT(index).type);
1378                 break;
1379         }
1380
1381         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1382                         AUVI_INPUT(index).vmux, 0, 0);
1383
1384         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1385                 int enable = 0;
1386                 if (AUVI_INPUT(i).audio_setup == NULL)
1387                         continue;
1388
1389                 if (i == index)
1390                         enable = 1;
1391                 else
1392                         enable = 0;
1393                 if (enable) {
1394                         (AUVI_INPUT(i).audio_setup)(dev, enable);
1395                 } else {
1396                         /* Make sure we leave it turned on if some
1397                            other input is routed to this callback */
1398                         if ((AUVI_INPUT(i).audio_setup) !=
1399                             ((AUVI_INPUT(index).audio_setup))) {
1400                                 (AUVI_INPUT(i).audio_setup)(dev, enable);
1401                         }
1402                 }
1403         }
1404
1405         v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1406                         AUVI_INPUT(index).amux, 0, 0);
1407 }
1408
1409 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1410 {
1411         struct au0828_dev *dev = video_drvdata(file);
1412
1413         dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1414                 index);
1415         if (index >= AU0828_MAX_INPUT)
1416                 return -EINVAL;
1417         if (AUVI_INPUT(index).type == 0)
1418                 return -EINVAL;
1419         dev->ctrl_input = index;
1420         au0828_s_input(dev, index);
1421         return 0;
1422 }
1423
1424 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1425 {
1426         if (a->index > 1)
1427                 return -EINVAL;
1428
1429         dprintk(1, "%s called\n", __func__);
1430
1431         if (a->index == 0)
1432                 strcpy(a->name, "Television");
1433         else
1434                 strcpy(a->name, "Line in");
1435
1436         a->capability = V4L2_AUDCAP_STEREO;
1437         return 0;
1438 }
1439
1440 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1441 {
1442         struct au0828_dev *dev = video_drvdata(file);
1443
1444         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1445                 dev->std_set_in_tuner_core, dev->dev_state);
1446
1447         a->index = dev->ctrl_ainput;
1448         if (a->index == 0)
1449                 strcpy(a->name, "Television");
1450         else
1451                 strcpy(a->name, "Line in");
1452
1453         a->capability = V4L2_AUDCAP_STEREO;
1454         return 0;
1455 }
1456
1457 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1458 {
1459         struct au0828_dev *dev = video_drvdata(file);
1460
1461         if (a->index != dev->ctrl_ainput)
1462                 return -EINVAL;
1463
1464         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1465                 dev->std_set_in_tuner_core, dev->dev_state);
1466         return 0;
1467 }
1468
1469 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1470 {
1471         struct au0828_dev *dev = video_drvdata(file);
1472
1473         if (t->index != 0)
1474                 return -EINVAL;
1475
1476         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1477                 dev->std_set_in_tuner_core, dev->dev_state);
1478
1479         strcpy(t->name, "Auvitek tuner");
1480
1481         au0828_init_tuner(dev);
1482         i2c_gate_ctrl(dev, 1);
1483         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1484         i2c_gate_ctrl(dev, 0);
1485         return 0;
1486 }
1487
1488 static int vidioc_s_tuner(struct file *file, void *priv,
1489                                 const struct v4l2_tuner *t)
1490 {
1491         struct au0828_dev *dev = video_drvdata(file);
1492
1493         if (t->index != 0)
1494                 return -EINVAL;
1495
1496         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1497                 dev->std_set_in_tuner_core, dev->dev_state);
1498
1499         au0828_init_tuner(dev);
1500         i2c_gate_ctrl(dev, 1);
1501         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1502         i2c_gate_ctrl(dev, 0);
1503
1504         dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1505                 t->afc);
1506
1507         return 0;
1508
1509 }
1510
1511 static int vidioc_g_frequency(struct file *file, void *priv,
1512                                 struct v4l2_frequency *freq)
1513 {
1514         struct au0828_dev *dev = video_drvdata(file);
1515
1516         if (freq->tuner != 0)
1517                 return -EINVAL;
1518         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1519                 dev->std_set_in_tuner_core, dev->dev_state);
1520         freq->frequency = dev->ctrl_freq;
1521         return 0;
1522 }
1523
1524 static int vidioc_s_frequency(struct file *file, void *priv,
1525                                 const struct v4l2_frequency *freq)
1526 {
1527         struct au0828_dev *dev = video_drvdata(file);
1528         struct v4l2_frequency new_freq = *freq;
1529
1530         if (freq->tuner != 0)
1531                 return -EINVAL;
1532
1533         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1534                 dev->std_set_in_tuner_core, dev->dev_state);
1535
1536         au0828_init_tuner(dev);
1537         i2c_gate_ctrl(dev, 1);
1538
1539         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1540         /* Get the actual set (and possibly clamped) frequency */
1541         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1542         dev->ctrl_freq = new_freq.frequency;
1543
1544         i2c_gate_ctrl(dev, 0);
1545
1546         au0828_analog_stream_reset(dev);
1547
1548         return 0;
1549 }
1550
1551
1552 /* RAW VBI ioctls */
1553
1554 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1555                                 struct v4l2_format *format)
1556 {
1557         struct au0828_dev *dev = video_drvdata(file);
1558
1559         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1560                 dev->std_set_in_tuner_core, dev->dev_state);
1561
1562         format->fmt.vbi.samples_per_line = dev->vbi_width;
1563         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1564         format->fmt.vbi.offset = 0;
1565         format->fmt.vbi.flags = 0;
1566         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1567
1568         format->fmt.vbi.count[0] = dev->vbi_height;
1569         format->fmt.vbi.count[1] = dev->vbi_height;
1570         format->fmt.vbi.start[0] = 21;
1571         format->fmt.vbi.start[1] = 284;
1572         memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1573
1574         return 0;
1575 }
1576
1577 static int vidioc_cropcap(struct file *file, void *priv,
1578                           struct v4l2_cropcap *cc)
1579 {
1580         struct au0828_dev *dev = video_drvdata(file);
1581
1582         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1583                 return -EINVAL;
1584
1585         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1586                 dev->std_set_in_tuner_core, dev->dev_state);
1587
1588         cc->bounds.left = 0;
1589         cc->bounds.top = 0;
1590         cc->bounds.width = dev->width;
1591         cc->bounds.height = dev->height;
1592
1593         cc->defrect = cc->bounds;
1594
1595         cc->pixelaspect.numerator = 54;
1596         cc->pixelaspect.denominator = 59;
1597
1598         return 0;
1599 }
1600
1601 #ifdef CONFIG_VIDEO_ADV_DEBUG
1602 static int vidioc_g_register(struct file *file, void *priv,
1603                              struct v4l2_dbg_register *reg)
1604 {
1605         struct au0828_dev *dev = video_drvdata(file);
1606
1607         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1608                 dev->std_set_in_tuner_core, dev->dev_state);
1609
1610         reg->val = au0828_read(dev, reg->reg);
1611         reg->size = 1;
1612         return 0;
1613 }
1614
1615 static int vidioc_s_register(struct file *file, void *priv,
1616                              const struct v4l2_dbg_register *reg)
1617 {
1618         struct au0828_dev *dev = video_drvdata(file);
1619
1620         dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1621                 dev->std_set_in_tuner_core, dev->dev_state);
1622
1623         return au0828_writereg(dev, reg->reg, reg->val);
1624 }
1625 #endif
1626
1627 static int vidioc_log_status(struct file *file, void *fh)
1628 {
1629         struct video_device *vdev = video_devdata(file);
1630
1631         dprintk(1, "%s called\n", __func__);
1632
1633         v4l2_ctrl_log_status(file, fh);
1634         v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1635         return 0;
1636 }
1637
1638 void au0828_v4l2_suspend(struct au0828_dev *dev)
1639 {
1640         struct urb *urb;
1641         int i;
1642
1643         pr_info("stopping V4L2\n");
1644
1645         if (dev->stream_state == STREAM_ON) {
1646                 pr_info("stopping V4L2 active URBs\n");
1647                 au0828_analog_stream_disable(dev);
1648                 /* stop urbs */
1649                 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1650                         urb = dev->isoc_ctl.urb[i];
1651                         if (urb) {
1652                                 if (!irqs_disabled())
1653                                         usb_kill_urb(urb);
1654                                 else
1655                                         usb_unlink_urb(urb);
1656                         }
1657                 }
1658         }
1659
1660         if (dev->vid_timeout_running)
1661                 del_timer_sync(&dev->vid_timeout);
1662         if (dev->vbi_timeout_running)
1663                 del_timer_sync(&dev->vbi_timeout);
1664 }
1665
1666 void au0828_v4l2_resume(struct au0828_dev *dev)
1667 {
1668         int i, rc;
1669
1670         pr_info("restarting V4L2\n");
1671
1672         if (dev->stream_state == STREAM_ON) {
1673                 au0828_stream_interrupt(dev);
1674                 au0828_init_tuner(dev);
1675         }
1676
1677         if (dev->vid_timeout_running)
1678                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1679         if (dev->vbi_timeout_running)
1680                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1681
1682         /* If we were doing ac97 instead of i2s, it would go here...*/
1683         au0828_i2s_init(dev);
1684
1685         au0828_analog_stream_enable(dev);
1686
1687         if (!(dev->stream_state == STREAM_ON)) {
1688                 au0828_analog_stream_reset(dev);
1689                 /* submit urbs */
1690                 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1691                         rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
1692                         if (rc) {
1693                                 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1694                                                i, rc);
1695                                 au0828_uninit_isoc(dev);
1696                         }
1697                 }
1698         }
1699 }
1700
1701 static struct v4l2_file_operations au0828_v4l_fops = {
1702         .owner      = THIS_MODULE,
1703         .open       = au0828_v4l2_open,
1704         .release    = au0828_v4l2_close,
1705         .read       = vb2_fop_read,
1706         .poll       = vb2_fop_poll,
1707         .mmap       = vb2_fop_mmap,
1708         .unlocked_ioctl = video_ioctl2,
1709 };
1710
1711 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1712         .vidioc_querycap            = vidioc_querycap,
1713         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1714         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1715         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1716         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1717         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1718         .vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
1719         .vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1720         .vidioc_enumaudio           = vidioc_enumaudio,
1721         .vidioc_g_audio             = vidioc_g_audio,
1722         .vidioc_s_audio             = vidioc_s_audio,
1723         .vidioc_cropcap             = vidioc_cropcap,
1724
1725         .vidioc_reqbufs             = vb2_ioctl_reqbufs,
1726         .vidioc_create_bufs         = vb2_ioctl_create_bufs,
1727         .vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
1728         .vidioc_querybuf            = vb2_ioctl_querybuf,
1729         .vidioc_qbuf                = vb2_ioctl_qbuf,
1730         .vidioc_dqbuf               = vb2_ioctl_dqbuf,
1731         .vidioc_expbuf               = vb2_ioctl_expbuf,
1732
1733         .vidioc_s_std               = vidioc_s_std,
1734         .vidioc_g_std               = vidioc_g_std,
1735         .vidioc_enum_input          = vidioc_enum_input,
1736         .vidioc_g_input             = vidioc_g_input,
1737         .vidioc_s_input             = vidioc_s_input,
1738
1739         .vidioc_streamon            = vb2_ioctl_streamon,
1740         .vidioc_streamoff           = vb2_ioctl_streamoff,
1741
1742         .vidioc_g_tuner             = vidioc_g_tuner,
1743         .vidioc_s_tuner             = vidioc_s_tuner,
1744         .vidioc_g_frequency         = vidioc_g_frequency,
1745         .vidioc_s_frequency         = vidioc_s_frequency,
1746 #ifdef CONFIG_VIDEO_ADV_DEBUG
1747         .vidioc_g_register          = vidioc_g_register,
1748         .vidioc_s_register          = vidioc_s_register,
1749 #endif
1750         .vidioc_log_status          = vidioc_log_status,
1751         .vidioc_subscribe_event     = v4l2_ctrl_subscribe_event,
1752         .vidioc_unsubscribe_event   = v4l2_event_unsubscribe,
1753 };
1754
1755 static const struct video_device au0828_video_template = {
1756         .fops                       = &au0828_v4l_fops,
1757         .release                    = video_device_release_empty,
1758         .ioctl_ops                  = &video_ioctl_ops,
1759         .tvnorms                    = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1760 };
1761
1762 static int au0828_vb2_setup(struct au0828_dev *dev)
1763 {
1764         int rc;
1765         struct vb2_queue *q;
1766
1767         /* Setup Videobuf2 for Video capture */
1768         q = &dev->vb_vidq;
1769         q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1770         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1771         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1772         q->drv_priv = dev;
1773         q->buf_struct_size = sizeof(struct au0828_buffer);
1774         q->ops = &au0828_video_qops;
1775         q->mem_ops = &vb2_vmalloc_memops;
1776
1777         rc = vb2_queue_init(q);
1778         if (rc < 0)
1779                 return rc;
1780
1781         /* Setup Videobuf2 for VBI capture */
1782         q = &dev->vb_vbiq;
1783         q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1784         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1785         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1786         q->drv_priv = dev;
1787         q->buf_struct_size = sizeof(struct au0828_buffer);
1788         q->ops = &au0828_vbi_qops;
1789         q->mem_ops = &vb2_vmalloc_memops;
1790
1791         rc = vb2_queue_init(q);
1792         if (rc < 0)
1793                 return rc;
1794
1795         return 0;
1796 }
1797
1798 static void au0828_analog_create_entities(struct au0828_dev *dev)
1799 {
1800 #if defined(CONFIG_MEDIA_CONTROLLER)
1801         static const char * const inames[] = {
1802                 [AU0828_VMUX_COMPOSITE] = "Composite",
1803                 [AU0828_VMUX_SVIDEO] = "S-Video",
1804                 [AU0828_VMUX_CABLE] = "Cable TV",
1805                 [AU0828_VMUX_TELEVISION] = "Television",
1806                 [AU0828_VMUX_DVB] = "DVB",
1807                 [AU0828_VMUX_DEBUG] = "tv debug"
1808         };
1809         int ret, i;
1810
1811         /* Initialize Video and VBI pads */
1812         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1813         ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
1814         if (ret < 0)
1815                 pr_err("failed to initialize video media entity!\n");
1816
1817         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1818         ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
1819         if (ret < 0)
1820                 pr_err("failed to initialize vbi media entity!\n");
1821
1822         /* Create entities for each input connector */
1823         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1824                 struct media_entity *ent = &dev->input_ent[i];
1825
1826                 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1827                         break;
1828
1829                 ent->name = inames[AUVI_INPUT(i).type];
1830                 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1831                 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1832
1833                 switch (AUVI_INPUT(i).type) {
1834                 case AU0828_VMUX_COMPOSITE:
1835                         ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1836                         break;
1837                 case AU0828_VMUX_SVIDEO:
1838                         ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1839                         break;
1840                 case AU0828_VMUX_CABLE:
1841                 case AU0828_VMUX_TELEVISION:
1842                 case AU0828_VMUX_DVB:
1843                         ent->function = MEDIA_ENT_F_CONN_RF;
1844                         break;
1845                 default: /* AU0828_VMUX_DEBUG */
1846                         ent->function = MEDIA_ENT_F_CONN_TEST;
1847                         break;
1848                 }
1849
1850                 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1851                 if (ret < 0)
1852                         pr_err("failed to initialize input pad[%d]!\n", i);
1853
1854                 ret = media_device_register_entity(dev->media_dev, ent);
1855                 if (ret < 0)
1856                         pr_err("failed to register input entity %d!\n", i);
1857         }
1858 #endif
1859 }
1860
1861 /**************************************************************************/
1862
1863 int au0828_analog_register(struct au0828_dev *dev,
1864                            struct usb_interface *interface)
1865 {
1866         int retval = -ENOMEM;
1867         struct usb_host_interface *iface_desc;
1868         struct usb_endpoint_descriptor *endpoint;
1869         int i, ret;
1870
1871         dprintk(1, "au0828_analog_register called for intf#%d!\n",
1872                 interface->cur_altsetting->desc.bInterfaceNumber);
1873
1874         /* set au0828 usb interface0 to as5 */
1875         retval = usb_set_interface(dev->usbdev,
1876                         interface->cur_altsetting->desc.bInterfaceNumber, 5);
1877         if (retval != 0) {
1878                 pr_info("Failure setting usb interface0 to as5\n");
1879                 return retval;
1880         }
1881
1882         /* Figure out which endpoint has the isoc interface */
1883         iface_desc = interface->cur_altsetting;
1884         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1885                 endpoint = &iface_desc->endpoint[i].desc;
1886                 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1887                      == USB_DIR_IN) &&
1888                     ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1889                      == USB_ENDPOINT_XFER_ISOC)) {
1890
1891                         /* we find our isoc in endpoint */
1892                         u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1893                         dev->max_pkt_size = (tmp & 0x07ff) *
1894                                 (((tmp & 0x1800) >> 11) + 1);
1895                         dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1896                         dprintk(1,
1897                                 "Found isoc endpoint 0x%02x, max size = %d\n",
1898                                 dev->isoc_in_endpointaddr, dev->max_pkt_size);
1899                 }
1900         }
1901         if (!(dev->isoc_in_endpointaddr)) {
1902                 pr_info("Could not locate isoc endpoint\n");
1903                 return -ENODEV;
1904         }
1905
1906         init_waitqueue_head(&dev->open);
1907         spin_lock_init(&dev->slock);
1908
1909         /* init video dma queues */
1910         INIT_LIST_HEAD(&dev->vidq.active);
1911         INIT_LIST_HEAD(&dev->vbiq.active);
1912
1913         setup_timer(&dev->vid_timeout, au0828_vid_buffer_timeout,
1914                     (unsigned long)dev);
1915         setup_timer(&dev->vbi_timeout, au0828_vbi_buffer_timeout,
1916                     (unsigned long)dev);
1917
1918         dev->width = NTSC_STD_W;
1919         dev->height = NTSC_STD_H;
1920         dev->field_size = dev->width * dev->height;
1921         dev->frame_size = dev->field_size << 1;
1922         dev->bytesperline = dev->width << 1;
1923         dev->vbi_width = 720;
1924         dev->vbi_height = 1;
1925         dev->ctrl_ainput = 0;
1926         dev->ctrl_freq = 960;
1927         dev->std = V4L2_STD_NTSC_M;
1928         au0828_s_input(dev, 0);
1929
1930         mutex_init(&dev->vb_queue_lock);
1931         mutex_init(&dev->vb_vbi_queue_lock);
1932
1933         /* Fill the video capture device struct */
1934         dev->vdev = au0828_video_template;
1935         dev->vdev.v4l2_dev = &dev->v4l2_dev;
1936         dev->vdev.lock = &dev->lock;
1937         dev->vdev.queue = &dev->vb_vidq;
1938         dev->vdev.queue->lock = &dev->vb_queue_lock;
1939         strcpy(dev->vdev.name, "au0828a video");
1940
1941         /* Setup the VBI device */
1942         dev->vbi_dev = au0828_video_template;
1943         dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
1944         dev->vbi_dev.lock = &dev->lock;
1945         dev->vbi_dev.queue = &dev->vb_vbiq;
1946         dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
1947         strcpy(dev->vbi_dev.name, "au0828a vbi");
1948
1949         /* Init entities at the Media Controller */
1950         au0828_analog_create_entities(dev);
1951
1952         /* initialize videobuf2 stuff */
1953         retval = au0828_vb2_setup(dev);
1954         if (retval != 0) {
1955                 dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
1956                         retval);
1957                 return -ENODEV;
1958         }
1959
1960         /* Register the v4l2 device */
1961         video_set_drvdata(&dev->vdev, dev);
1962         retval = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
1963         if (retval != 0) {
1964                 dprintk(1, "unable to register video device (error = %d).\n",
1965                         retval);
1966                 ret = -ENODEV;
1967                 goto err_reg_vdev;
1968         }
1969
1970         /* Register the vbi device */
1971         video_set_drvdata(&dev->vbi_dev, dev);
1972         retval = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, -1);
1973         if (retval != 0) {
1974                 dprintk(1, "unable to register vbi device (error = %d).\n",
1975                         retval);
1976                 ret = -ENODEV;
1977                 goto err_reg_vbi_dev;
1978         }
1979
1980         dprintk(1, "%s completed!\n", __func__);
1981
1982         return 0;
1983
1984 err_reg_vbi_dev:
1985         video_unregister_device(&dev->vdev);
1986 err_reg_vdev:
1987         vb2_queue_release(&dev->vb_vidq);
1988         vb2_queue_release(&dev->vb_vbiq);
1989         return ret;
1990 }
1991