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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Auvitek AU0828 USB Bridge (Analog video support)
   4  *
   5  * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
   6  * Copyright (C) 2005-2008 Auvitek International, Ltd.
   7  */
   8
   9 /* Developer Notes:
  10  *
  11  * The hardware scaler supported is unimplemented
  12  * AC97 audio support is unimplemented (only i2s audio mode)
  13  *
  14  */
  15
  16 #include "au0828.h"
  17 #include "au8522.h"
  18
  19 #include <linux/module.h>
  20 #include <linux/slab.h>
  21 #include <linux/init.h>
  22 #include <linux/device.h>
  23 #include <media/v4l2-common.h>
  24 #include <media/v4l2-mc.h>
  25 #include <media/v4l2-ioctl.h>
  26 #include <media/v4l2-event.h>
  27 #include <media/tuner.h>
  28 #include "au0828-reg.h"
  29
  30 static DEFINE_MUTEX(au0828_sysfs_lock);
  31
  32 /* ------------------------------------------------------------------
  33         Videobuf operations
  34    ------------------------------------------------------------------*/
  35
  36 static unsigned int isoc_debug;
  37 module_param(isoc_debug, int, 0644);
  38 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
  39
  40 #define au0828_isocdbg(fmt, arg...) \
  41 do {\
  42         if (isoc_debug) { \
  43                 pr_info("au0828 %s :"fmt, \
  44                        __func__ , ##arg);          \
  45         } \
  46   } while (0)
  47
  48 static inline void i2c_gate_ctrl(struct au0828_dev *dev, int val)
  49 {
  50         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
  51                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, val);
  52 }
  53
  54 static inline void print_err_status(struct au0828_dev *dev,
  55                                     int packet, int status)
  56 {
  57         char *errmsg = "Unknown";
  58
  59         switch (status) {
  60         case -ENOENT:
  61                 errmsg = "unlinked synchronously";
  62                 break;
  63         case -ECONNRESET:
  64                 errmsg = "unlinked asynchronously";
  65                 break;
  66         case -ENOSR:
  67                 errmsg = "Buffer error (overrun)";
  68                 break;
  69         case -EPIPE:
  70                 errmsg = "Stalled (device not responding)";
  71                 break;
  72         case -EOVERFLOW:
  73                 errmsg = "Babble (bad cable?)";
  74                 break;
  75         case -EPROTO:
  76                 errmsg = "Bit-stuff error (bad cable?)";
  77                 break;
  78         case -EILSEQ:
  79                 errmsg = "CRC/Timeout (could be anything)";
  80                 break;
  81         case -ETIME:
  82                 errmsg = "Device does not respond";
  83                 break;
  84         }
  85         if (packet < 0) {
  86                 au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
  87         } else {
  88                 au0828_isocdbg("URB packet %d, status %d [%s].\n",
  89                                packet, status, errmsg);
  90         }
  91 }
  92
  93 static int check_dev(struct au0828_dev *dev)
  94 {
  95         if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
  96                 pr_info("v4l2 ioctl: device not present\n");
  97                 return -ENODEV;
  98         }
  99
 100         if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
 101                 pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
 102                 return -EIO;
 103         }
 104         return 0;
 105 }
 106
 107 /*
 108  * IRQ callback, called by URB callback
 109  */
 110 static void au0828_irq_callback(struct urb *urb)
 111 {
 112         struct au0828_dmaqueue  *dma_q = urb->context;
 113         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
 114         unsigned long flags = 0;
 115         int i;
 116
 117         switch (urb->status) {
 118         case 0:             /* success */
 119         case -ETIMEDOUT:    /* NAK */
 120                 break;
 121         case -ECONNRESET:   /* kill */
 122         case -ENOENT:
 123         case -ESHUTDOWN:
 124                 au0828_isocdbg("au0828_irq_callback called: status kill\n");
 125                 return;
 126         default:            /* unknown error */
 127                 au0828_isocdbg("urb completion error %d.\n", urb->status);
 128                 break;
 129         }
 130
 131         /* Copy data from URB */
 132         spin_lock_irqsave(&dev->slock, flags);
 133         dev->isoc_ctl.isoc_copy(dev, urb);
 134         spin_unlock_irqrestore(&dev->slock, flags);
 135
 136         /* Reset urb buffers */
 137         for (i = 0; i < urb->number_of_packets; i++) {
 138                 urb->iso_frame_desc[i].status = 0;
 139                 urb->iso_frame_desc[i].actual_length = 0;
 140         }
 141         urb->status = 0;
 142
 143         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
 144         if (urb->status) {
 145                 au0828_isocdbg("urb resubmit failed (error=%i)\n",
 146                                urb->status);
 147         }
 148         dev->stream_state = STREAM_ON;
 149 }
 150
 151 /*
 152  * Stop and Deallocate URBs
 153  */
 154 static void au0828_uninit_isoc(struct au0828_dev *dev)
 155 {
 156         struct urb *urb;
 157         int i;
 158
 159         au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
 160
 161         dev->isoc_ctl.nfields = -1;
 162         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 163                 urb = dev->isoc_ctl.urb[i];
 164                 if (urb) {
 165                         if (!irqs_disabled())
 166                                 usb_kill_urb(urb);
 167                         else
 168                                 usb_unlink_urb(urb);
 169
 170                         if (dev->isoc_ctl.transfer_buffer[i]) {
 171                                 usb_free_coherent(dev->usbdev,
 172                                         urb->transfer_buffer_length,
 173                                         dev->isoc_ctl.transfer_buffer[i],
 174                                         urb->transfer_dma);
 175                         }
 176                         usb_free_urb(urb);
 177                         dev->isoc_ctl.urb[i] = NULL;
 178                 }
 179                 dev->isoc_ctl.transfer_buffer[i] = NULL;
 180         }
 181
 182         kfree(dev->isoc_ctl.urb);
 183         kfree(dev->isoc_ctl.transfer_buffer);
 184
 185         dev->isoc_ctl.urb = NULL;
 186         dev->isoc_ctl.transfer_buffer = NULL;
 187         dev->isoc_ctl.num_bufs = 0;
 188
 189         dev->stream_state = STREAM_OFF;
 190 }
 191
 192 /*
 193  * Allocate URBs and start IRQ
 194  */
 195 static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
 196                             int num_bufs, int max_pkt_size,
 197                             int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
 198 {
 199         struct au0828_dmaqueue *dma_q = &dev->vidq;
 200         int i;
 201         int sb_size, pipe;
 202         struct urb *urb;
 203         int j, k;
 204         int rc;
 205
 206         au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
 207
 208         dev->isoc_ctl.isoc_copy = isoc_copy;
 209         dev->isoc_ctl.num_bufs = num_bufs;
 210
 211         dev->isoc_ctl.urb = kcalloc(num_bufs, sizeof(void *),  GFP_KERNEL);
 212         if (!dev->isoc_ctl.urb) {
 213                 au0828_isocdbg("cannot alloc memory for usb buffers\n");
 214                 return -ENOMEM;
 215         }
 216
 217         dev->isoc_ctl.transfer_buffer = kcalloc(num_bufs, sizeof(void *),
 218                                                 GFP_KERNEL);
 219         if (!dev->isoc_ctl.transfer_buffer) {
 220                 au0828_isocdbg("cannot allocate memory for usb transfer\n");
 221                 kfree(dev->isoc_ctl.urb);
 222                 return -ENOMEM;
 223         }
 224
 225         dev->isoc_ctl.max_pkt_size = max_pkt_size;
 226         dev->isoc_ctl.buf = NULL;
 227
 228         sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
 229
 230         /* allocate urbs and transfer buffers */
 231         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 232                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
 233                 if (!urb) {
 234                         au0828_isocdbg("cannot allocate URB\n");
 235                         au0828_uninit_isoc(dev);
 236                         return -ENOMEM;
 237                 }
 238                 dev->isoc_ctl.urb[i] = urb;
 239
 240                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev,
 241                         sb_size, GFP_KERNEL, &urb->transfer_dma);
 242                 if (!dev->isoc_ctl.transfer_buffer[i]) {
 243                         au0828_isocdbg("cannot allocate transfer buffer\n");
 244                         au0828_uninit_isoc(dev);
 245                         return -ENOMEM;
 246                 }
 247                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
 248
 249                 pipe = usb_rcvisocpipe(dev->usbdev,
 250                                        dev->isoc_in_endpointaddr);
 251
 252                 usb_fill_int_urb(urb, dev->usbdev, pipe,
 253                                  dev->isoc_ctl.transfer_buffer[i], sb_size,
 254                                  au0828_irq_callback, dma_q, 1);
 255
 256                 urb->number_of_packets = max_packets;
 257                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
 258
 259                 k = 0;
 260                 for (j = 0; j < max_packets; j++) {
 261                         urb->iso_frame_desc[j].offset = k;
 262                         urb->iso_frame_desc[j].length =
 263                                                 dev->isoc_ctl.max_pkt_size;
 264                         k += dev->isoc_ctl.max_pkt_size;
 265                 }
 266         }
 267
 268         /* submit urbs and enables IRQ */
 269         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
 270                 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
 271                 if (rc) {
 272                         au0828_isocdbg("submit of urb %i failed (error=%i)\n",
 273                                        i, rc);
 274                         au0828_uninit_isoc(dev);
 275                         return rc;
 276                 }
 277         }
 278
 279         return 0;
 280 }
 281
 282 /*
 283  * Announces that a buffer were filled and request the next
 284  */
 285 static inline void buffer_filled(struct au0828_dev *dev,
 286                                  struct au0828_dmaqueue *dma_q,
 287                                  struct au0828_buffer *buf)
 288 {
 289         struct vb2_v4l2_buffer *vb = &buf->vb;
 290         struct vb2_queue *q = vb->vb2_buf.vb2_queue;
 291
 292         /* Advice that buffer was filled */
 293         au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
 294
 295         if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 296                 vb->sequence = dev->frame_count++;
 297         else
 298                 vb->sequence = dev->vbi_frame_count++;
 299
 300         vb->field = V4L2_FIELD_INTERLACED;
 301         vb->vb2_buf.timestamp = ktime_get_ns();
 302         vb2_buffer_done(&vb->vb2_buf, VB2_BUF_STATE_DONE);
 303 }
 304
 305 /*
 306  * Identify the buffer header type and properly handles
 307  */
 308 static void au0828_copy_video(struct au0828_dev *dev,
 309                               struct au0828_dmaqueue  *dma_q,
 310                               struct au0828_buffer *buf,
 311                               unsigned char *p,
 312                               unsigned char *outp, unsigned long len)
 313 {
 314         void *fieldstart, *startwrite, *startread;
 315         int  linesdone, currlinedone, offset, lencopy, remain;
 316         int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
 317
 318         if (len == 0)
 319                 return;
 320
 321         if (dma_q->pos + len > buf->length)
 322                 len = buf->length - dma_q->pos;
 323
 324         startread = p;
 325         remain = len;
 326
 327         /* Interlaces frame */
 328         if (buf->top_field)
 329                 fieldstart = outp;
 330         else
 331                 fieldstart = outp + bytesperline;
 332
 333         linesdone = dma_q->pos / bytesperline;
 334         currlinedone = dma_q->pos % bytesperline;
 335         offset = linesdone * bytesperline * 2 + currlinedone;
 336         startwrite = fieldstart + offset;
 337         lencopy = bytesperline - currlinedone;
 338         lencopy = lencopy > remain ? remain : lencopy;
 339
 340         if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
 341                 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
 342                                ((char *)startwrite + lencopy) -
 343                                ((char *)outp + buf->length));
 344                 remain = (char *)outp + buf->length - (char *)startwrite;
 345                 lencopy = remain;
 346         }
 347         if (lencopy <= 0)
 348                 return;
 349         memcpy(startwrite, startread, lencopy);
 350
 351         remain -= lencopy;
 352
 353         while (remain > 0) {
 354                 startwrite += lencopy + bytesperline;
 355                 startread += lencopy;
 356                 if (bytesperline > remain)
 357                         lencopy = remain;
 358                 else
 359                         lencopy = bytesperline;
 360
 361                 if ((char *)startwrite + lencopy > (char *)outp +
 362                     buf->length) {
 363                         au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
 364                                        ((char *)startwrite + lencopy) -
 365                                        ((char *)outp + buf->length));
 366                         lencopy = remain = (char *)outp + buf->length -
 367                                            (char *)startwrite;
 368                 }
 369                 if (lencopy <= 0)
 370                         break;
 371
 372                 memcpy(startwrite, startread, lencopy);
 373
 374                 remain -= lencopy;
 375         }
 376
 377         if (offset > 1440) {
 378                 /* We have enough data to check for greenscreen */
 379                 if (outp[0] < 0x60 && outp[1440] < 0x60)
 380                         dev->greenscreen_detected = 1;
 381         }
 382
 383         dma_q->pos += len;
 384 }
 385
 386 /*
 387  * video-buf generic routine to get the next available buffer
 388  */
 389 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
 390                                 struct au0828_buffer **buf)
 391 {
 392         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
 393
 394         if (list_empty(&dma_q->active)) {
 395                 au0828_isocdbg("No active queue to serve\n");
 396                 dev->isoc_ctl.buf = NULL;
 397                 *buf = NULL;
 398                 return;
 399         }
 400
 401         /* Get the next buffer */
 402         *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
 403         /* Cleans up buffer - Useful for testing for frame/URB loss */
 404         list_del(&(*buf)->list);
 405         dma_q->pos = 0;
 406         (*buf)->vb_buf = (*buf)->mem;
 407         dev->isoc_ctl.buf = *buf;
 408
 409         return;
 410 }
 411
 412 static void au0828_copy_vbi(struct au0828_dev *dev,
 413                               struct au0828_dmaqueue  *dma_q,
 414                               struct au0828_buffer *buf,
 415                               unsigned char *p,
 416                               unsigned char *outp, unsigned long len)
 417 {
 418         unsigned char *startwrite, *startread;
 419         int bytesperline;
 420         int i, j = 0;
 421
 422         if (dev == NULL) {
 423                 au0828_isocdbg("dev is null\n");
 424                 return;
 425         }
 426
 427         if (dma_q == NULL) {
 428                 au0828_isocdbg("dma_q is null\n");
 429                 return;
 430         }
 431         if (buf == NULL)
 432                 return;
 433         if (p == NULL) {
 434                 au0828_isocdbg("p is null\n");
 435                 return;
 436         }
 437         if (outp == NULL) {
 438                 au0828_isocdbg("outp is null\n");
 439                 return;
 440         }
 441
 442         bytesperline = dev->vbi_width;
 443
 444         if (dma_q->pos + len > buf->length)
 445                 len = buf->length - dma_q->pos;
 446
 447         startread = p;
 448         startwrite = outp + (dma_q->pos / 2);
 449
 450         /* Make sure the bottom field populates the second half of the frame */
 451         if (buf->top_field == 0)
 452                 startwrite += bytesperline * dev->vbi_height;
 453
 454         for (i = 0; i < len; i += 2)
 455                 startwrite[j++] = startread[i+1];
 456
 457         dma_q->pos += len;
 458 }
 459
 460
 461 /*
 462  * video-buf generic routine to get the next available VBI buffer
 463  */
 464 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
 465                                     struct au0828_buffer **buf)
 466 {
 467         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
 468
 469         if (list_empty(&dma_q->active)) {
 470                 au0828_isocdbg("No active queue to serve\n");
 471                 dev->isoc_ctl.vbi_buf = NULL;
 472                 *buf = NULL;
 473                 return;
 474         }
 475
 476         /* Get the next buffer */
 477         *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
 478         /* Cleans up buffer - Useful for testing for frame/URB loss */
 479         list_del(&(*buf)->list);
 480         dma_q->pos = 0;
 481         (*buf)->vb_buf = (*buf)->mem;
 482         dev->isoc_ctl.vbi_buf = *buf;
 483         return;
 484 }
 485
 486 /*
 487  * Controls the isoc copy of each urb packet
 488  */
 489 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
 490 {
 491         struct au0828_buffer    *buf;
 492         struct au0828_buffer    *vbi_buf;
 493         struct au0828_dmaqueue  *dma_q = urb->context;
 494         struct au0828_dmaqueue  *vbi_dma_q = &dev->vbiq;
 495         unsigned char *outp = NULL;
 496         unsigned char *vbioutp = NULL;
 497         int i, len = 0, rc = 1;
 498         unsigned char *p;
 499         unsigned char fbyte;
 500         unsigned int vbi_field_size;
 501         unsigned int remain, lencopy;
 502
 503         if (!dev)
 504                 return 0;
 505
 506         if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
 507             test_bit(DEV_MISCONFIGURED, &dev->dev_state))
 508                 return 0;
 509
 510         if (urb->status < 0) {
 511                 print_err_status(dev, -1, urb->status);
 512                 if (urb->status == -ENOENT)
 513                         return 0;
 514         }
 515
 516         buf = dev->isoc_ctl.buf;
 517         if (buf != NULL)
 518                 outp = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 519
 520         vbi_buf = dev->isoc_ctl.vbi_buf;
 521         if (vbi_buf != NULL)
 522                 vbioutp = vb2_plane_vaddr(&vbi_buf->vb.vb2_buf, 0);
 523
 524         for (i = 0; i < urb->number_of_packets; i++) {
 525                 int status = urb->iso_frame_desc[i].status;
 526
 527                 if (status < 0) {
 528                         print_err_status(dev, i, status);
 529                         if (urb->iso_frame_desc[i].status != -EPROTO)
 530                                 continue;
 531                 }
 532
 533                 if (urb->iso_frame_desc[i].actual_length <= 0)
 534                         continue;
 535
 536                 if (urb->iso_frame_desc[i].actual_length >
 537                                                 dev->max_pkt_size) {
 538                         au0828_isocdbg("packet bigger than packet size");
 539                         continue;
 540                 }
 541
 542                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 543                 fbyte = p[0];
 544                 len = urb->iso_frame_desc[i].actual_length - 4;
 545                 p += 4;
 546
 547                 if (fbyte & 0x80) {
 548                         len -= 4;
 549                         p += 4;
 550                         au0828_isocdbg("Video frame %s\n",
 551                                        (fbyte & 0x40) ? "odd" : "even");
 552                         if (fbyte & 0x40) {
 553                                 /* VBI */
 554                                 if (vbi_buf != NULL)
 555                                         buffer_filled(dev, vbi_dma_q, vbi_buf);
 556                                 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
 557                                 if (vbi_buf == NULL)
 558                                         vbioutp = NULL;
 559                                 else
 560                                         vbioutp = vb2_plane_vaddr(
 561                                                 &vbi_buf->vb.vb2_buf, 0);
 562
 563                                 /* Video */
 564                                 if (buf != NULL)
 565                                         buffer_filled(dev, dma_q, buf);
 566                                 get_next_buf(dma_q, &buf);
 567                                 if (buf == NULL)
 568                                         outp = NULL;
 569                                 else
 570                                         outp = vb2_plane_vaddr(
 571                                                 &buf->vb.vb2_buf, 0);
 572
 573                                 /* As long as isoc traffic is arriving, keep
 574                                    resetting the timer */
 575                                 if (dev->vid_timeout_running)
 576                                         mod_timer(&dev->vid_timeout,
 577                                                   jiffies + (HZ / 10));
 578                                 if (dev->vbi_timeout_running)
 579                                         mod_timer(&dev->vbi_timeout,
 580                                                   jiffies + (HZ / 10));
 581                         }
 582
 583                         if (buf != NULL) {
 584                                 if (fbyte & 0x40)
 585                                         buf->top_field = 1;
 586                                 else
 587                                         buf->top_field = 0;
 588                         }
 589
 590                         if (vbi_buf != NULL) {
 591                                 if (fbyte & 0x40)
 592                                         vbi_buf->top_field = 1;
 593                                 else
 594                                         vbi_buf->top_field = 0;
 595                         }
 596
 597                         dev->vbi_read = 0;
 598                         vbi_dma_q->pos = 0;
 599                         dma_q->pos = 0;
 600                 }
 601
 602                 vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
 603                 if (dev->vbi_read < vbi_field_size) {
 604                         remain  = vbi_field_size - dev->vbi_read;
 605                         if (len < remain)
 606                                 lencopy = len;
 607                         else
 608                                 lencopy = remain;
 609
 610                         if (vbi_buf != NULL)
 611                                 au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
 612                                                 vbioutp, len);
 613
 614                         len -= lencopy;
 615                         p += lencopy;
 616                         dev->vbi_read += lencopy;
 617                 }
 618
 619                 if (dev->vbi_read >= vbi_field_size && buf != NULL)
 620                         au0828_copy_video(dev, dma_q, buf, p, outp, len);
 621         }
 622         return rc;
 623 }
 624
 625 void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
 626 {
 627 #ifdef CONFIG_MEDIA_CONTROLLER
 628         int i;
 629
 630         for (i = 0; i < AU0828_MAX_INPUT; i++) {
 631                 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
 632                         return;
 633                 media_device_unregister_entity(&dev->input_ent[i]);
 634         }
 635 #endif
 636 }
 637
 638 static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
 639 {
 640         struct au0828_dev *dev =
 641                 container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
 642
 643         v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
 644         v4l2_device_unregister(&dev->v4l2_dev);
 645         au0828_usb_v4l2_media_release(dev);
 646         au0828_usb_release(dev);
 647 }
 648
 649 int au0828_v4l2_device_register(struct usb_interface *interface,
 650                                 struct au0828_dev *dev)
 651 {
 652         int retval;
 653
 654         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
 655                 return 0;
 656
 657         /* Create the v4l2_device */
 658 #ifdef CONFIG_MEDIA_CONTROLLER
 659         dev->v4l2_dev.mdev = dev->media_dev;
 660 #endif
 661         retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
 662         if (retval) {
 663                 pr_err("%s() v4l2_device_register failed\n",
 664                        __func__);
 665                 return retval;
 666         }
 667
 668         dev->v4l2_dev.release = au0828_usb_v4l2_release;
 669
 670         /* This control handler will inherit the controls from au8522 */
 671         retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
 672         if (retval) {
 673                 pr_err("%s() v4l2_ctrl_handler_init failed\n",
 674                        __func__);
 675                 return retval;
 676         }
 677         dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
 678
 679         return 0;
 680 }
 681
 682 static int queue_setup(struct vb2_queue *vq,
 683                        unsigned int *nbuffers, unsigned int *nplanes,
 684                        unsigned int sizes[], struct device *alloc_devs[])
 685 {
 686         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 687         unsigned long size = dev->height * dev->bytesperline;
 688
 689         if (*nplanes)
 690                 return sizes[0] < size ? -EINVAL : 0;
 691         *nplanes = 1;
 692         sizes[0] = size;
 693         return 0;
 694 }
 695
 696 static int
 697 buffer_prepare(struct vb2_buffer *vb)
 698 {
 699         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 700         struct au0828_buffer *buf = container_of(vbuf,
 701                                 struct au0828_buffer, vb);
 702         struct au0828_dev    *dev = vb2_get_drv_priv(vb->vb2_queue);
 703
 704         buf->length = dev->height * dev->bytesperline;
 705
 706         if (vb2_plane_size(vb, 0) < buf->length) {
 707                 pr_err("%s data will not fit into plane (%lu < %lu)\n",
 708                         __func__, vb2_plane_size(vb, 0), buf->length);
 709                 return -EINVAL;
 710         }
 711         vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->length);
 712         return 0;
 713 }
 714
 715 static void
 716 buffer_queue(struct vb2_buffer *vb)
 717 {
 718         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 719         struct au0828_buffer    *buf     = container_of(vbuf,
 720                                                         struct au0828_buffer,
 721                                                         vb);
 722         struct au0828_dev       *dev     = vb2_get_drv_priv(vb->vb2_queue);
 723         struct au0828_dmaqueue  *vidq    = &dev->vidq;
 724         unsigned long flags = 0;
 725
 726         buf->mem = vb2_plane_vaddr(vb, 0);
 727         buf->length = vb2_plane_size(vb, 0);
 728
 729         spin_lock_irqsave(&dev->slock, flags);
 730         list_add_tail(&buf->list, &vidq->active);
 731         spin_unlock_irqrestore(&dev->slock, flags);
 732 }
 733
 734 static int au0828_i2s_init(struct au0828_dev *dev)
 735 {
 736         /* Enable i2s mode */
 737         au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
 738         return 0;
 739 }
 740
 741 /*
 742  * Auvitek au0828 analog stream enable
 743  */
 744 static int au0828_analog_stream_enable(struct au0828_dev *d)
 745 {
 746         struct usb_interface *iface;
 747         int ret, h, w;
 748
 749         dprintk(1, "au0828_analog_stream_enable called\n");
 750
 751         if (test_bit(DEV_DISCONNECTED, &d->dev_state))
 752                 return -ENODEV;
 753
 754         iface = usb_ifnum_to_if(d->usbdev, 0);
 755         if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
 756                 dprintk(1, "Changing intf#0 to alt 5\n");
 757                 /* set au0828 interface0 to AS5 here again */
 758                 ret = usb_set_interface(d->usbdev, 0, 5);
 759                 if (ret < 0) {
 760                         pr_info("Au0828 can't set alt setting to 5!\n");
 761                         return -EBUSY;
 762                 }
 763         }
 764
 765         h = d->height / 2 + 2;
 766         w = d->width * 2;
 767
 768         au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
 769         au0828_writereg(d, 0x106, 0x00);
 770         /* set x position */
 771         au0828_writereg(d, 0x110, 0x00);
 772         au0828_writereg(d, 0x111, 0x00);
 773         au0828_writereg(d, 0x114, w & 0xff);
 774         au0828_writereg(d, 0x115, w >> 8);
 775         /* set y position */
 776         au0828_writereg(d, 0x112, 0x00);
 777         au0828_writereg(d, 0x113, 0x00);
 778         au0828_writereg(d, 0x116, h & 0xff);
 779         au0828_writereg(d, 0x117, h >> 8);
 780         au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
 781
 782         return 0;
 783 }
 784
 785 static int au0828_analog_stream_disable(struct au0828_dev *d)
 786 {
 787         dprintk(1, "au0828_analog_stream_disable called\n");
 788         au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
 789         return 0;
 790 }
 791
 792 static void au0828_analog_stream_reset(struct au0828_dev *dev)
 793 {
 794         dprintk(1, "au0828_analog_stream_reset called\n");
 795         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
 796         mdelay(30);
 797         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
 798 }
 799
 800 /*
 801  * Some operations needs to stop current streaming
 802  */
 803 static int au0828_stream_interrupt(struct au0828_dev *dev)
 804 {
 805         dev->stream_state = STREAM_INTERRUPT;
 806         if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
 807                 return -ENODEV;
 808         return 0;
 809 }
 810
 811 int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
 812 {
 813         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 814         int rc = 0;
 815
 816         dprintk(1, "au0828_start_analog_streaming called %d\n",
 817                 dev->streaming_users);
 818
 819         if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 820                 dev->frame_count = 0;
 821         else
 822                 dev->vbi_frame_count = 0;
 823
 824         if (dev->streaming_users == 0) {
 825                 /* If we were doing ac97 instead of i2s, it would go here...*/
 826                 au0828_i2s_init(dev);
 827                 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
 828                                    AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
 829                                    au0828_isoc_copy);
 830                 if (rc < 0) {
 831                         pr_info("au0828_init_isoc failed\n");
 832                         return rc;
 833                 }
 834
 835                 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 1);
 836
 837                 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 838                         dev->vid_timeout_running = 1;
 839                         mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
 840                 } else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
 841                         dev->vbi_timeout_running = 1;
 842                         mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
 843                 }
 844         }
 845         dev->streaming_users++;
 846         return rc;
 847 }
 848
 849 static void au0828_stop_streaming(struct vb2_queue *vq)
 850 {
 851         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 852         struct au0828_dmaqueue *vidq = &dev->vidq;
 853         unsigned long flags = 0;
 854
 855         dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
 856
 857         if (dev->streaming_users-- == 1) {
 858                 au0828_uninit_isoc(dev);
 859                 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
 860         }
 861
 862         dev->vid_timeout_running = 0;
 863         del_timer_sync(&dev->vid_timeout);
 864
 865         spin_lock_irqsave(&dev->slock, flags);
 866         if (dev->isoc_ctl.buf != NULL) {
 867                 vb2_buffer_done(&dev->isoc_ctl.buf->vb.vb2_buf,
 868                                 VB2_BUF_STATE_ERROR);
 869                 dev->isoc_ctl.buf = NULL;
 870         }
 871         while (!list_empty(&vidq->active)) {
 872                 struct au0828_buffer *buf;
 873
 874                 buf = list_entry(vidq->active.next, struct au0828_buffer, list);
 875                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 876                 list_del(&buf->list);
 877         }
 878         spin_unlock_irqrestore(&dev->slock, flags);
 879 }
 880
 881 void au0828_stop_vbi_streaming(struct vb2_queue *vq)
 882 {
 883         struct au0828_dev *dev = vb2_get_drv_priv(vq);
 884         struct au0828_dmaqueue *vbiq = &dev->vbiq;
 885         unsigned long flags = 0;
 886
 887         dprintk(1, "au0828_stop_vbi_streaming called %d\n",
 888                 dev->streaming_users);
 889
 890         if (dev->streaming_users-- == 1) {
 891                 au0828_uninit_isoc(dev);
 892                 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
 893         }
 894
 895         spin_lock_irqsave(&dev->slock, flags);
 896         if (dev->isoc_ctl.vbi_buf != NULL) {
 897                 vb2_buffer_done(&dev->isoc_ctl.vbi_buf->vb.vb2_buf,
 898                                 VB2_BUF_STATE_ERROR);
 899                 dev->isoc_ctl.vbi_buf = NULL;
 900         }
 901         while (!list_empty(&vbiq->active)) {
 902                 struct au0828_buffer *buf;
 903
 904                 buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
 905                 list_del(&buf->list);
 906                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 907         }
 908         spin_unlock_irqrestore(&dev->slock, flags);
 909
 910         dev->vbi_timeout_running = 0;
 911         del_timer_sync(&dev->vbi_timeout);
 912 }
 913
 914 static const struct vb2_ops au0828_video_qops = {
 915         .queue_setup     = queue_setup,
 916         .buf_prepare     = buffer_prepare,
 917         .buf_queue       = buffer_queue,
 918         .start_streaming = au0828_start_analog_streaming,
 919         .stop_streaming  = au0828_stop_streaming,
 920         .wait_prepare    = vb2_ops_wait_prepare,
 921         .wait_finish     = vb2_ops_wait_finish,
 922 };
 923
 924 /* ------------------------------------------------------------------
 925    V4L2 interface
 926    ------------------------------------------------------------------*/
 927 /*
 928  * au0828_analog_unregister
 929  * unregister v4l2 devices
 930  */
 931 int au0828_analog_unregister(struct au0828_dev *dev)
 932 {
 933         dprintk(1, "au0828_analog_unregister called\n");
 934
 935         /* No analog TV */
 936         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
 937                 return 0;
 938
 939         mutex_lock(&au0828_sysfs_lock);
 940         vb2_video_unregister_device(&dev->vdev);
 941         vb2_video_unregister_device(&dev->vbi_dev);
 942         mutex_unlock(&au0828_sysfs_lock);
 943
 944         v4l2_device_disconnect(&dev->v4l2_dev);
 945         v4l2_device_put(&dev->v4l2_dev);
 946
 947         return 1;
 948 }
 949
 950 /* This function ensures that video frames continue to be delivered even if
 951    the ITU-656 input isn't receiving any data (thereby preventing applications
 952    such as tvtime from hanging) */
 953 static void au0828_vid_buffer_timeout(struct timer_list *t)
 954 {
 955         struct au0828_dev *dev = from_timer(dev, t, vid_timeout);
 956         struct au0828_dmaqueue *dma_q = &dev->vidq;
 957         struct au0828_buffer *buf;
 958         unsigned char *vid_data;
 959         unsigned long flags = 0;
 960
 961         spin_lock_irqsave(&dev->slock, flags);
 962
 963         buf = dev->isoc_ctl.buf;
 964         if (buf != NULL) {
 965                 vid_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 966                 memset(vid_data, 0x00, buf->length); /* Blank green frame */
 967                 buffer_filled(dev, dma_q, buf);
 968         }
 969         get_next_buf(dma_q, &buf);
 970
 971         if (dev->vid_timeout_running == 1)
 972                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
 973
 974         spin_unlock_irqrestore(&dev->slock, flags);
 975 }
 976
 977 static void au0828_vbi_buffer_timeout(struct timer_list *t)
 978 {
 979         struct au0828_dev *dev = from_timer(dev, t, vbi_timeout);
 980         struct au0828_dmaqueue *dma_q = &dev->vbiq;
 981         struct au0828_buffer *buf;
 982         unsigned char *vbi_data;
 983         unsigned long flags = 0;
 984
 985         spin_lock_irqsave(&dev->slock, flags);
 986
 987         buf = dev->isoc_ctl.vbi_buf;
 988         if (buf != NULL) {
 989                 vbi_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
 990                 memset(vbi_data, 0x00, buf->length);
 991                 buffer_filled(dev, dma_q, buf);
 992         }
 993         vbi_get_next_buf(dma_q, &buf);
 994
 995         if (dev->vbi_timeout_running == 1)
 996                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
 997         spin_unlock_irqrestore(&dev->slock, flags);
 998 }
 999
1000 static int au0828_v4l2_open(struct file *filp)
1001 {
1002         struct au0828_dev *dev = video_drvdata(filp);
1003         int ret;
1004
1005         dprintk(1,
1006                 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1007                 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1008                 dev->streaming_users, dev->users);
1009
1010         if (mutex_lock_interruptible(&dev->lock))
1011                 return -ERESTARTSYS;
1012
1013         ret = v4l2_fh_open(filp);
1014         if (ret) {
1015                 au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1016                                 __func__, ret);
1017                 mutex_unlock(&dev->lock);
1018                 return ret;
1019         }
1020
1021         if (dev->users == 0) {
1022                 au0828_analog_stream_enable(dev);
1023                 au0828_analog_stream_reset(dev);
1024                 dev->stream_state = STREAM_OFF;
1025                 set_bit(DEV_INITIALIZED, &dev->dev_state);
1026         }
1027         dev->users++;
1028         mutex_unlock(&dev->lock);
1029         return ret;
1030 }
1031
1032 static int au0828_v4l2_close(struct file *filp)
1033 {
1034         int ret;
1035         struct au0828_dev *dev = video_drvdata(filp);
1036         struct video_device *vdev = video_devdata(filp);
1037
1038         dprintk(1,
1039                 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1040                 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1041                 dev->streaming_users, dev->users);
1042
1043         mutex_lock(&dev->lock);
1044         if (vdev->vfl_type == VFL_TYPE_VIDEO && dev->vid_timeout_running) {
1045                 /* Cancel timeout thread in case they didn't call streamoff */
1046                 dev->vid_timeout_running = 0;
1047                 del_timer_sync(&dev->vid_timeout);
1048         } else if (vdev->vfl_type == VFL_TYPE_VBI &&
1049                         dev->vbi_timeout_running) {
1050                 /* Cancel timeout thread in case they didn't call streamoff */
1051                 dev->vbi_timeout_running = 0;
1052                 del_timer_sync(&dev->vbi_timeout);
1053         }
1054
1055         if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
1056                 goto end;
1057
1058         if (dev->users == 1) {
1059                 /*
1060                  * Avoid putting tuner in sleep if DVB or ALSA are
1061                  * streaming.
1062                  *
1063                  * On most USB devices  like au0828 the tuner can
1064                  * be safely put in sleep state here if ALSA isn't
1065                  * streaming. Exceptions are some very old USB tuner
1066                  * models such as em28xx-based WinTV USB2 which have
1067                  * a separate audio output jack. The devices that have
1068                  * a separate audio output jack have analog tuners,
1069                  * like Philips FM1236. Those devices are always on,
1070                  * so the s_power callback are silently ignored.
1071                  * So, the current logic here does the following:
1072                  * Disable (put tuner to sleep) when
1073                  * - ALSA and DVB aren't streaming.
1074                  * - the last V4L2 file handler is closed.
1075                  *
1076                  * FIXME:
1077                  *
1078                  * Additionally, this logic could be improved to
1079                  * disable the media source if the above conditions
1080                  * are met and if the device:
1081                  * - doesn't have a separate audio out plug (or
1082                  * - doesn't use a silicon tuner like xc2028/3028/4000/5000).
1083                  *
1084                  * Once this additional logic is in place, a callback
1085                  * is needed to enable the media source and power on
1086                  * the tuner, for radio to work.
1087                 */
1088                 ret = v4l_enable_media_source(vdev);
1089                 if (ret == 0)
1090                         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner,
1091                                              standby);
1092                 dev->std_set_in_tuner_core = 0;
1093
1094                 /* When close the device, set the usb intf0 into alt0 to free
1095                    USB bandwidth */
1096                 ret = usb_set_interface(dev->usbdev, 0, 0);
1097                 if (ret < 0)
1098                         pr_info("Au0828 can't set alternate to 0!\n");
1099         }
1100 end:
1101         _vb2_fop_release(filp, NULL);
1102         dev->users--;
1103         mutex_unlock(&dev->lock);
1104         return 0;
1105 }
1106
1107 /* Must be called with dev->lock held */
1108 static void au0828_init_tuner(struct au0828_dev *dev)
1109 {
1110         struct v4l2_frequency f = {
1111                 .frequency = dev->ctrl_freq,
1112                 .type = V4L2_TUNER_ANALOG_TV,
1113         };
1114
1115         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1116                 dev->std_set_in_tuner_core, dev->dev_state);
1117
1118         if (dev->std_set_in_tuner_core)
1119                 return;
1120         dev->std_set_in_tuner_core = 1;
1121         i2c_gate_ctrl(dev, 1);
1122         /* If we've never sent the standard in tuner core, do so now.
1123            We don't do this at device probe because we don't want to
1124            incur the cost of a firmware load */
1125         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1126         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1127         i2c_gate_ctrl(dev, 0);
1128 }
1129
1130 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1131                              struct v4l2_format *format)
1132 {
1133         int ret;
1134         int width = format->fmt.pix.width;
1135         int height = format->fmt.pix.height;
1136
1137         /* If they are demanding a format other than the one we support,
1138            bail out (tvtime asks for UYVY and then retries with YUYV) */
1139         if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1140                 return -EINVAL;
1141
1142         /* format->fmt.pix.width only support 720 and height 480 */
1143         if (width != 720)
1144                 width = 720;
1145         if (height != 480)
1146                 height = 480;
1147
1148         format->fmt.pix.width = width;
1149         format->fmt.pix.height = height;
1150         format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1151         format->fmt.pix.bytesperline = width * 2;
1152         format->fmt.pix.sizeimage = width * height * 2;
1153         format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1154         format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1155
1156         if (cmd == VIDIOC_TRY_FMT)
1157                 return 0;
1158
1159         /* maybe set new image format, driver current only support 720*480 */
1160         dev->width = width;
1161         dev->height = height;
1162         dev->frame_size = width * height * 2;
1163         dev->field_size = width * height;
1164         dev->bytesperline = width * 2;
1165
1166         if (dev->stream_state == STREAM_ON) {
1167                 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1168                 ret = au0828_stream_interrupt(dev);
1169                 if (ret != 0) {
1170                         dprintk(1, "error interrupting video stream!\n");
1171                         return ret;
1172                 }
1173         }
1174
1175         au0828_analog_stream_enable(dev);
1176
1177         return 0;
1178 }
1179
1180 static int vidioc_querycap(struct file *file, void  *priv,
1181                            struct v4l2_capability *cap)
1182 {
1183         struct au0828_dev *dev = video_drvdata(file);
1184
1185         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1186                 dev->std_set_in_tuner_core, dev->dev_state);
1187
1188         strscpy(cap->driver, "au0828", sizeof(cap->driver));
1189         strscpy(cap->card, dev->board.name, sizeof(cap->card));
1190         usb_make_path(dev->usbdev, cap->bus_info, sizeof(cap->bus_info));
1191
1192         /* set the device capabilities */
1193         cap->capabilities =
1194                 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
1195                 V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
1196                 V4L2_CAP_DEVICE_CAPS;
1197         return 0;
1198 }
1199
1200 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1201                                         struct v4l2_fmtdesc *f)
1202 {
1203         if (f->index)
1204                 return -EINVAL;
1205
1206         dprintk(1, "%s called\n", __func__);
1207
1208         f->pixelformat = V4L2_PIX_FMT_UYVY;
1209
1210         return 0;
1211 }
1212
1213 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1214                                         struct v4l2_format *f)
1215 {
1216         struct au0828_dev *dev = video_drvdata(file);
1217
1218         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1219                 dev->std_set_in_tuner_core, dev->dev_state);
1220
1221         f->fmt.pix.width = dev->width;
1222         f->fmt.pix.height = dev->height;
1223         f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1224         f->fmt.pix.bytesperline = dev->bytesperline;
1225         f->fmt.pix.sizeimage = dev->frame_size;
1226         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1227         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1228         return 0;
1229 }
1230
1231 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1232                                   struct v4l2_format *f)
1233 {
1234         struct au0828_dev *dev = video_drvdata(file);
1235
1236         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1237                 dev->std_set_in_tuner_core, dev->dev_state);
1238
1239         return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1240 }
1241
1242 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1243                                 struct v4l2_format *f)
1244 {
1245         struct au0828_dev *dev = video_drvdata(file);
1246         int rc;
1247
1248         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1249                 dev->std_set_in_tuner_core, dev->dev_state);
1250
1251         rc = check_dev(dev);
1252         if (rc < 0)
1253                 return rc;
1254
1255         if (vb2_is_busy(&dev->vb_vidq)) {
1256                 pr_info("%s queue busy\n", __func__);
1257                 rc = -EBUSY;
1258                 goto out;
1259         }
1260
1261         rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1262 out:
1263         return rc;
1264 }
1265
1266 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1267 {
1268         struct au0828_dev *dev = video_drvdata(file);
1269
1270         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1271                 dev->std_set_in_tuner_core, dev->dev_state);
1272
1273         if (norm == dev->std)
1274                 return 0;
1275
1276         if (dev->streaming_users > 0)
1277                 return -EBUSY;
1278
1279         dev->std = norm;
1280
1281         au0828_init_tuner(dev);
1282
1283         i2c_gate_ctrl(dev, 1);
1284
1285         /*
1286          * FIXME: when we support something other than 60Hz standards,
1287          * we are going to have to make the au0828 bridge adjust the size
1288          * of its capture buffer, which is currently hardcoded at 720x480
1289          */
1290
1291         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1292
1293         i2c_gate_ctrl(dev, 0);
1294
1295         return 0;
1296 }
1297
1298 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1299 {
1300         struct au0828_dev *dev = video_drvdata(file);
1301
1302         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1303                 dev->std_set_in_tuner_core, dev->dev_state);
1304
1305         *norm = dev->std;
1306         return 0;
1307 }
1308
1309 static int vidioc_enum_input(struct file *file, void *priv,
1310                                 struct v4l2_input *input)
1311 {
1312         struct au0828_dev *dev = video_drvdata(file);
1313         unsigned int tmp;
1314
1315         static const char *inames[] = {
1316                 [AU0828_VMUX_UNDEFINED] = "Undefined",
1317                 [AU0828_VMUX_COMPOSITE] = "Composite",
1318                 [AU0828_VMUX_SVIDEO] = "S-Video",
1319                 [AU0828_VMUX_CABLE] = "Cable TV",
1320                 [AU0828_VMUX_TELEVISION] = "Television",
1321                 [AU0828_VMUX_DVB] = "DVB",
1322         };
1323
1324         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1325                 dev->std_set_in_tuner_core, dev->dev_state);
1326
1327         tmp = input->index;
1328
1329         if (tmp >= AU0828_MAX_INPUT)
1330                 return -EINVAL;
1331         if (AUVI_INPUT(tmp).type == 0)
1332                 return -EINVAL;
1333
1334         input->index = tmp;
1335         strscpy(input->name, inames[AUVI_INPUT(tmp).type], sizeof(input->name));
1336         if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1337             (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1338                 input->type |= V4L2_INPUT_TYPE_TUNER;
1339                 input->audioset = 1;
1340         } else {
1341                 input->type |= V4L2_INPUT_TYPE_CAMERA;
1342                 input->audioset = 2;
1343         }
1344
1345         input->std = dev->vdev.tvnorms;
1346
1347         return 0;
1348 }
1349
1350 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1351 {
1352         struct au0828_dev *dev = video_drvdata(file);
1353
1354         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1355                 dev->std_set_in_tuner_core, dev->dev_state);
1356
1357         *i = dev->ctrl_input;
1358         return 0;
1359 }
1360
1361 static void au0828_s_input(struct au0828_dev *dev, int index)
1362 {
1363         int i;
1364
1365         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1366                 dev->std_set_in_tuner_core, dev->dev_state);
1367
1368         switch (AUVI_INPUT(index).type) {
1369         case AU0828_VMUX_SVIDEO:
1370                 dev->input_type = AU0828_VMUX_SVIDEO;
1371                 dev->ctrl_ainput = 1;
1372                 break;
1373         case AU0828_VMUX_COMPOSITE:
1374                 dev->input_type = AU0828_VMUX_COMPOSITE;
1375                 dev->ctrl_ainput = 1;
1376                 break;
1377         case AU0828_VMUX_TELEVISION:
1378                 dev->input_type = AU0828_VMUX_TELEVISION;
1379                 dev->ctrl_ainput = 0;
1380                 break;
1381         default:
1382                 dprintk(1, "unknown input type set [%d]\n",
1383                         AUVI_INPUT(index).type);
1384                 return;
1385         }
1386
1387         dev->ctrl_input = index;
1388
1389         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1390                         AUVI_INPUT(index).vmux, 0, 0);
1391
1392         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1393                 int enable = 0;
1394                 if (AUVI_INPUT(i).audio_setup == NULL)
1395                         continue;
1396
1397                 if (i == index)
1398                         enable = 1;
1399                 else
1400                         enable = 0;
1401                 if (enable) {
1402                         (AUVI_INPUT(i).audio_setup)(dev, enable);
1403                 } else {
1404                         /* Make sure we leave it turned on if some
1405                            other input is routed to this callback */
1406                         if ((AUVI_INPUT(i).audio_setup) !=
1407                             ((AUVI_INPUT(index).audio_setup))) {
1408                                 (AUVI_INPUT(i).audio_setup)(dev, enable);
1409                         }
1410                 }
1411         }
1412
1413         v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1414                         AUVI_INPUT(index).amux, 0, 0);
1415 }
1416
1417 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1418 {
1419         struct au0828_dev *dev = video_drvdata(file);
1420         struct video_device *vfd = video_devdata(file);
1421
1422         dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1423                 index);
1424         if (index >= AU0828_MAX_INPUT)
1425                 return -EINVAL;
1426         if (AUVI_INPUT(index).type == 0)
1427                 return -EINVAL;
1428
1429         if (dev->ctrl_input == index)
1430                 return 0;
1431
1432         au0828_s_input(dev, index);
1433
1434         /*
1435          * Input has been changed. Disable the media source
1436          * associated with the old input and enable source
1437          * for the newly set input
1438          */
1439         v4l_disable_media_source(vfd);
1440         return v4l_enable_media_source(vfd);
1441 }
1442
1443 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1444 {
1445         if (a->index > 1)
1446                 return -EINVAL;
1447
1448         dprintk(1, "%s called\n", __func__);
1449
1450         if (a->index == 0)
1451                 strscpy(a->name, "Television", sizeof(a->name));
1452         else
1453                 strscpy(a->name, "Line in", sizeof(a->name));
1454
1455         a->capability = V4L2_AUDCAP_STEREO;
1456         return 0;
1457 }
1458
1459 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1460 {
1461         struct au0828_dev *dev = video_drvdata(file);
1462
1463         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1464                 dev->std_set_in_tuner_core, dev->dev_state);
1465
1466         a->index = dev->ctrl_ainput;
1467         if (a->index == 0)
1468                 strscpy(a->name, "Television", sizeof(a->name));
1469         else
1470                 strscpy(a->name, "Line in", sizeof(a->name));
1471
1472         a->capability = V4L2_AUDCAP_STEREO;
1473         return 0;
1474 }
1475
1476 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1477 {
1478         struct au0828_dev *dev = video_drvdata(file);
1479
1480         if (a->index != dev->ctrl_ainput)
1481                 return -EINVAL;
1482
1483         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1484                 dev->std_set_in_tuner_core, dev->dev_state);
1485         return 0;
1486 }
1487
1488 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1489 {
1490         struct au0828_dev *dev = video_drvdata(file);
1491         struct video_device *vfd = video_devdata(file);
1492         int ret;
1493
1494         if (t->index != 0)
1495                 return -EINVAL;
1496
1497         ret = v4l_enable_media_source(vfd);
1498         if (ret)
1499                 return ret;
1500
1501         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1502                 dev->std_set_in_tuner_core, dev->dev_state);
1503
1504         strscpy(t->name, "Auvitek tuner", sizeof(t->name));
1505
1506         au0828_init_tuner(dev);
1507         i2c_gate_ctrl(dev, 1);
1508         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1509         i2c_gate_ctrl(dev, 0);
1510         return 0;
1511 }
1512
1513 static int vidioc_s_tuner(struct file *file, void *priv,
1514                                 const struct v4l2_tuner *t)
1515 {
1516         struct au0828_dev *dev = video_drvdata(file);
1517
1518         if (t->index != 0)
1519                 return -EINVAL;
1520
1521         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1522                 dev->std_set_in_tuner_core, dev->dev_state);
1523
1524         au0828_init_tuner(dev);
1525         i2c_gate_ctrl(dev, 1);
1526         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1527         i2c_gate_ctrl(dev, 0);
1528
1529         dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1530                 t->afc);
1531
1532         return 0;
1533
1534 }
1535
1536 static int vidioc_g_frequency(struct file *file, void *priv,
1537                                 struct v4l2_frequency *freq)
1538 {
1539         struct au0828_dev *dev = video_drvdata(file);
1540
1541         if (freq->tuner != 0)
1542                 return -EINVAL;
1543         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1544                 dev->std_set_in_tuner_core, dev->dev_state);
1545         freq->frequency = dev->ctrl_freq;
1546         return 0;
1547 }
1548
1549 static int vidioc_s_frequency(struct file *file, void *priv,
1550                                 const struct v4l2_frequency *freq)
1551 {
1552         struct au0828_dev *dev = video_drvdata(file);
1553         struct v4l2_frequency new_freq = *freq;
1554
1555         if (freq->tuner != 0)
1556                 return -EINVAL;
1557
1558         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1559                 dev->std_set_in_tuner_core, dev->dev_state);
1560
1561         au0828_init_tuner(dev);
1562         i2c_gate_ctrl(dev, 1);
1563
1564         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1565         /* Get the actual set (and possibly clamped) frequency */
1566         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1567         dev->ctrl_freq = new_freq.frequency;
1568
1569         i2c_gate_ctrl(dev, 0);
1570
1571         au0828_analog_stream_reset(dev);
1572
1573         return 0;
1574 }
1575
1576
1577 /* RAW VBI ioctls */
1578
1579 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1580                                 struct v4l2_format *format)
1581 {
1582         struct au0828_dev *dev = video_drvdata(file);
1583
1584         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1585                 dev->std_set_in_tuner_core, dev->dev_state);
1586
1587         format->fmt.vbi.samples_per_line = dev->vbi_width;
1588         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1589         format->fmt.vbi.offset = 0;
1590         format->fmt.vbi.flags = 0;
1591         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1592
1593         format->fmt.vbi.count[0] = dev->vbi_height;
1594         format->fmt.vbi.count[1] = dev->vbi_height;
1595         format->fmt.vbi.start[0] = 21;
1596         format->fmt.vbi.start[1] = 284;
1597         memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1598
1599         return 0;
1600 }
1601
1602 static int vidioc_g_pixelaspect(struct file *file, void *priv,
1603                                 int type, struct v4l2_fract *f)
1604 {
1605         struct au0828_dev *dev = video_drvdata(file);
1606
1607         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1608                 return -EINVAL;
1609
1610         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1611                 dev->std_set_in_tuner_core, dev->dev_state);
1612
1613         f->numerator = 54;
1614         f->denominator = 59;
1615
1616         return 0;
1617 }
1618
1619 static int vidioc_g_selection(struct file *file, void *priv,
1620                               struct v4l2_selection *s)
1621 {
1622         struct au0828_dev *dev = video_drvdata(file);
1623
1624         if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1625                 return -EINVAL;
1626
1627         switch (s->target) {
1628         case V4L2_SEL_TGT_CROP_BOUNDS:
1629         case V4L2_SEL_TGT_CROP_DEFAULT:
1630                 s->r.left = 0;
1631                 s->r.top = 0;
1632                 s->r.width = dev->width;
1633                 s->r.height = dev->height;
1634                 break;
1635         default:
1636                 return -EINVAL;
1637         }
1638         return 0;
1639 }
1640
1641 #ifdef CONFIG_VIDEO_ADV_DEBUG
1642 static int vidioc_g_register(struct file *file, void *priv,
1643                              struct v4l2_dbg_register *reg)
1644 {
1645         struct au0828_dev *dev = video_drvdata(file);
1646
1647         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1648                 dev->std_set_in_tuner_core, dev->dev_state);
1649
1650         reg->val = au0828_read(dev, reg->reg);
1651         reg->size = 1;
1652         return 0;
1653 }
1654
1655 static int vidioc_s_register(struct file *file, void *priv,
1656                              const struct v4l2_dbg_register *reg)
1657 {
1658         struct au0828_dev *dev = video_drvdata(file);
1659
1660         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1661                 dev->std_set_in_tuner_core, dev->dev_state);
1662
1663         return au0828_writereg(dev, reg->reg, reg->val);
1664 }
1665 #endif
1666
1667 static int vidioc_log_status(struct file *file, void *fh)
1668 {
1669         struct video_device *vdev = video_devdata(file);
1670
1671         dprintk(1, "%s called\n", __func__);
1672
1673         v4l2_ctrl_log_status(file, fh);
1674         v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1675         return 0;
1676 }
1677
1678 void au0828_v4l2_suspend(struct au0828_dev *dev)
1679 {
1680         struct urb *urb;
1681         int i;
1682
1683         pr_info("stopping V4L2\n");
1684
1685         if (dev->stream_state == STREAM_ON) {
1686                 pr_info("stopping V4L2 active URBs\n");
1687                 au0828_analog_stream_disable(dev);
1688                 /* stop urbs */
1689                 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1690                         urb = dev->isoc_ctl.urb[i];
1691                         if (urb) {
1692                                 if (!irqs_disabled())
1693                                         usb_kill_urb(urb);
1694                                 else
1695                                         usb_unlink_urb(urb);
1696                         }
1697                 }
1698         }
1699
1700         if (dev->vid_timeout_running)
1701                 del_timer_sync(&dev->vid_timeout);
1702         if (dev->vbi_timeout_running)
1703                 del_timer_sync(&dev->vbi_timeout);
1704 }
1705
1706 void au0828_v4l2_resume(struct au0828_dev *dev)
1707 {
1708         int i, rc;
1709
1710         pr_info("restarting V4L2\n");
1711
1712         if (dev->stream_state == STREAM_ON) {
1713                 au0828_stream_interrupt(dev);
1714                 au0828_init_tuner(dev);
1715         }
1716
1717         if (dev->vid_timeout_running)
1718                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1719         if (dev->vbi_timeout_running)
1720                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1721
1722         /* If we were doing ac97 instead of i2s, it would go here...*/
1723         au0828_i2s_init(dev);
1724
1725         au0828_analog_stream_enable(dev);
1726
1727         if (!(dev->stream_state == STREAM_ON)) {
1728                 au0828_analog_stream_reset(dev);
1729                 /* submit urbs */
1730                 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1731                         rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
1732                         if (rc) {
1733                                 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1734                                                i, rc);
1735                                 au0828_uninit_isoc(dev);
1736                         }
1737                 }
1738         }
1739 }
1740
1741 static const struct v4l2_file_operations au0828_v4l_fops = {
1742         .owner      = THIS_MODULE,
1743         .open       = au0828_v4l2_open,
1744         .release    = au0828_v4l2_close,
1745         .read       = vb2_fop_read,
1746         .poll       = vb2_fop_poll,
1747         .mmap       = vb2_fop_mmap,
1748         .unlocked_ioctl = video_ioctl2,
1749 };
1750
1751 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1752         .vidioc_querycap            = vidioc_querycap,
1753         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1754         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1755         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1756         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1757         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1758         .vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
1759         .vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1760         .vidioc_enumaudio           = vidioc_enumaudio,
1761         .vidioc_g_audio             = vidioc_g_audio,
1762         .vidioc_s_audio             = vidioc_s_audio,
1763         .vidioc_g_pixelaspect       = vidioc_g_pixelaspect,
1764         .vidioc_g_selection         = vidioc_g_selection,
1765
1766         .vidioc_reqbufs             = vb2_ioctl_reqbufs,
1767         .vidioc_create_bufs         = vb2_ioctl_create_bufs,
1768         .vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
1769         .vidioc_querybuf            = vb2_ioctl_querybuf,
1770         .vidioc_qbuf                = vb2_ioctl_qbuf,
1771         .vidioc_dqbuf               = vb2_ioctl_dqbuf,
1772         .vidioc_expbuf               = vb2_ioctl_expbuf,
1773
1774         .vidioc_s_std               = vidioc_s_std,
1775         .vidioc_g_std               = vidioc_g_std,
1776         .vidioc_enum_input          = vidioc_enum_input,
1777         .vidioc_g_input             = vidioc_g_input,
1778         .vidioc_s_input             = vidioc_s_input,
1779
1780         .vidioc_streamon            = vb2_ioctl_streamon,
1781         .vidioc_streamoff           = vb2_ioctl_streamoff,
1782
1783         .vidioc_g_tuner             = vidioc_g_tuner,
1784         .vidioc_s_tuner             = vidioc_s_tuner,
1785         .vidioc_g_frequency         = vidioc_g_frequency,
1786         .vidioc_s_frequency         = vidioc_s_frequency,
1787 #ifdef CONFIG_VIDEO_ADV_DEBUG
1788         .vidioc_g_register          = vidioc_g_register,
1789         .vidioc_s_register          = vidioc_s_register,
1790 #endif
1791         .vidioc_log_status          = vidioc_log_status,
1792         .vidioc_subscribe_event     = v4l2_ctrl_subscribe_event,
1793         .vidioc_unsubscribe_event   = v4l2_event_unsubscribe,
1794 };
1795
1796 static const struct video_device au0828_video_template = {
1797         .fops                       = &au0828_v4l_fops,
1798         .release                    = video_device_release_empty,
1799         .ioctl_ops                  = &video_ioctl_ops,
1800         .tvnorms                    = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1801 };
1802
1803 static int au0828_vb2_setup(struct au0828_dev *dev)
1804 {
1805         int rc;
1806         struct vb2_queue *q;
1807
1808         /* Setup Videobuf2 for Video capture */
1809         q = &dev->vb_vidq;
1810         q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1811         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1812         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1813         q->drv_priv = dev;
1814         q->buf_struct_size = sizeof(struct au0828_buffer);
1815         q->ops = &au0828_video_qops;
1816         q->mem_ops = &vb2_vmalloc_memops;
1817
1818         rc = vb2_queue_init(q);
1819         if (rc < 0)
1820                 return rc;
1821
1822         /* Setup Videobuf2 for VBI capture */
1823         q = &dev->vb_vbiq;
1824         q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1825         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1826         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1827         q->drv_priv = dev;
1828         q->buf_struct_size = sizeof(struct au0828_buffer);
1829         q->ops = &au0828_vbi_qops;
1830         q->mem_ops = &vb2_vmalloc_memops;
1831
1832         rc = vb2_queue_init(q);
1833         if (rc < 0)
1834                 return rc;
1835
1836         return 0;
1837 }
1838
1839 static void au0828_analog_create_entities(struct au0828_dev *dev)
1840 {
1841 #if defined(CONFIG_MEDIA_CONTROLLER)
1842         static const char * const inames[] = {
1843                 [AU0828_VMUX_COMPOSITE] = "Composite",
1844                 [AU0828_VMUX_SVIDEO] = "S-Video",
1845                 [AU0828_VMUX_CABLE] = "Cable TV",
1846                 [AU0828_VMUX_TELEVISION] = "Television",
1847                 [AU0828_VMUX_DVB] = "DVB",
1848         };
1849         int ret, i;
1850
1851         /* Initialize Video and VBI pads */
1852         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1853         ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
1854         if (ret < 0)
1855                 pr_err("failed to initialize video media entity!\n");
1856
1857         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1858         ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
1859         if (ret < 0)
1860                 pr_err("failed to initialize vbi media entity!\n");
1861
1862         /* Create entities for each input connector */
1863         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1864                 struct media_entity *ent = &dev->input_ent[i];
1865
1866                 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1867                         break;
1868
1869                 ent->name = inames[AUVI_INPUT(i).type];
1870                 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1871                 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1872
1873                 switch (AUVI_INPUT(i).type) {
1874                 case AU0828_VMUX_COMPOSITE:
1875                         ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1876                         break;
1877                 case AU0828_VMUX_SVIDEO:
1878                         ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1879                         break;
1880                 case AU0828_VMUX_CABLE:
1881                 case AU0828_VMUX_TELEVISION:
1882                 case AU0828_VMUX_DVB:
1883                 default: /* Just to shut up a warning */
1884                         ent->function = MEDIA_ENT_F_CONN_RF;
1885                         break;
1886                 }
1887
1888                 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1889                 if (ret < 0)
1890                         pr_err("failed to initialize input pad[%d]!\n", i);
1891
1892                 ret = media_device_register_entity(dev->media_dev, ent);
1893                 if (ret < 0)
1894                         pr_err("failed to register input entity %d!\n", i);
1895         }
1896 #endif
1897 }
1898
1899 /**************************************************************************/
1900
1901 int au0828_analog_register(struct au0828_dev *dev,
1902                            struct usb_interface *interface)
1903 {
1904         int retval = -ENOMEM;
1905         struct usb_host_interface *iface_desc;
1906         struct usb_endpoint_descriptor *endpoint;
1907         int i, ret;
1908
1909         dprintk(1, "au0828_analog_register called for intf#%d!\n",
1910                 interface->cur_altsetting->desc.bInterfaceNumber);
1911
1912         /* No analog TV */
1913         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
1914                 return 0;
1915
1916         /* set au0828 usb interface0 to as5 */
1917         retval = usb_set_interface(dev->usbdev,
1918                         interface->cur_altsetting->desc.bInterfaceNumber, 5);
1919         if (retval != 0) {
1920                 pr_info("Failure setting usb interface0 to as5\n");
1921                 return retval;
1922         }
1923
1924         /* Figure out which endpoint has the isoc interface */
1925         iface_desc = interface->cur_altsetting;
1926         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1927                 endpoint = &iface_desc->endpoint[i].desc;
1928                 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1929                      == USB_DIR_IN) &&
1930                     ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1931                      == USB_ENDPOINT_XFER_ISOC)) {
1932
1933                         /* we find our isoc in endpoint */
1934                         u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1935                         dev->max_pkt_size = (tmp & 0x07ff) *
1936                                 (((tmp & 0x1800) >> 11) + 1);
1937                         dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1938                         dprintk(1,
1939                                 "Found isoc endpoint 0x%02x, max size = %d\n",
1940                                 dev->isoc_in_endpointaddr, dev->max_pkt_size);
1941                 }
1942         }
1943         if (!(dev->isoc_in_endpointaddr)) {
1944                 pr_info("Could not locate isoc endpoint\n");
1945                 return -ENODEV;
1946         }
1947
1948         init_waitqueue_head(&dev->open);
1949         spin_lock_init(&dev->slock);
1950
1951         /* init video dma queues */
1952         INIT_LIST_HEAD(&dev->vidq.active);
1953         INIT_LIST_HEAD(&dev->vbiq.active);
1954
1955         timer_setup(&dev->vid_timeout, au0828_vid_buffer_timeout, 0);
1956         timer_setup(&dev->vbi_timeout, au0828_vbi_buffer_timeout, 0);
1957
1958         dev->width = NTSC_STD_W;
1959         dev->height = NTSC_STD_H;
1960         dev->field_size = dev->width * dev->height;
1961         dev->frame_size = dev->field_size << 1;
1962         dev->bytesperline = dev->width << 1;
1963         dev->vbi_width = 720;
1964         dev->vbi_height = 1;
1965         dev->ctrl_ainput = 0;
1966         dev->ctrl_freq = 960;
1967         dev->std = V4L2_STD_NTSC_M;
1968         /* Default input is TV Tuner */
1969         au0828_s_input(dev, 0);
1970
1971         mutex_init(&dev->vb_queue_lock);
1972         mutex_init(&dev->vb_vbi_queue_lock);
1973
1974         /* Fill the video capture device struct */
1975         dev->vdev = au0828_video_template;
1976         dev->vdev.v4l2_dev = &dev->v4l2_dev;
1977         dev->vdev.lock = &dev->lock;
1978         dev->vdev.queue = &dev->vb_vidq;
1979         dev->vdev.queue->lock = &dev->vb_queue_lock;
1980         dev->vdev.device_caps =
1981                 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
1982                 V4L2_CAP_TUNER | V4L2_CAP_VIDEO_CAPTURE;
1983         strscpy(dev->vdev.name, "au0828a video", sizeof(dev->vdev.name));
1984
1985         /* Setup the VBI device */
1986         dev->vbi_dev = au0828_video_template;
1987         dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
1988         dev->vbi_dev.lock = &dev->lock;
1989         dev->vbi_dev.queue = &dev->vb_vbiq;
1990         dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
1991         dev->vbi_dev.device_caps =
1992                 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
1993                 V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE;
1994         strscpy(dev->vbi_dev.name, "au0828a vbi", sizeof(dev->vbi_dev.name));
1995
1996         /* Init entities at the Media Controller */
1997         au0828_analog_create_entities(dev);
1998
1999         /* initialize videobuf2 stuff */
2000         retval = au0828_vb2_setup(dev);
2001         if (retval != 0) {
2002                 dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
2003                         retval);
2004                 return -ENODEV;
2005         }
2006
2007         /* Register the v4l2 device */
2008         video_set_drvdata(&dev->vdev, dev);
2009         retval = video_register_device(&dev->vdev, VFL_TYPE_VIDEO, -1);
2010         if (retval != 0) {
2011                 dprintk(1, "unable to register video device (error = %d).\n",
2012                         retval);
2013                 return -ENODEV;
2014         }
2015
2016         /* Register the vbi device */
2017         video_set_drvdata(&dev->vbi_dev, dev);
2018         retval = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, -1);
2019         if (retval != 0) {
2020                 dprintk(1, "unable to register vbi device (error = %d).\n",
2021                         retval);
2022                 ret = -ENODEV;
2023                 goto err_reg_vbi_dev;
2024         }
2025
2026 #ifdef CONFIG_MEDIA_CONTROLLER
2027         retval = v4l2_mc_create_media_graph(dev->media_dev);
2028         if (retval) {
2029                 pr_err("%s() au0282_dev_register failed to create graph\n",
2030                         __func__);
2031                 ret = -ENODEV;
2032                 goto err_reg_vbi_dev;
2033         }
2034 #endif
2035
2036         dprintk(1, "%s completed!\n", __func__);
2037
2038         return 0;
2039
2040 err_reg_vbi_dev:
2041         vb2_video_unregister_device(&dev->vdev);
2042         return ret;
2043 }
2044