drivers/media/video/usbvision/usbvision-video.c

   1 /*
   2  * USB USBVISION Video device driver 0.9.9
   3  *
   4  *
   5  *
   6  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   7  *
   8  * This module is part of usbvision driver project.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Let's call the version 0.... until compression decoding is completely
  25  * implemented.
  26  *
  27  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
  28  * It was based on USB CPiA driver written by Peter Pregler,
  29  * Scott J. Bertin and Johannes Erdfelt
  30  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
  31  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
  32  * Updates to driver completed by Dwaine P. Garden
  33  *
  34  *
  35  * TODO:
  36  *     - use submit_urb for all setup packets
  37  *     - Fix memory settings for nt1004. It is 4 times as big as the
  38  *       nt1003 memory.
  39  *     - Add audio on endpoint 3 for nt1004 chip.
  40  *         Seems impossible, needs a codec interface.  Which one?
  41  *     - Clean up the driver.
  42  *     - optimization for performance.
  43  *     - Add Videotext capability (VBI).  Working on it.....
  44  *     - Check audio for other devices
  45  *
  46  */
  47
  48 #include <linux/version.h>
  49 #include <linux/kernel.h>
  50 #include <linux/list.h>
  51 #include <linux/timer.h>
  52 #include <linux/slab.h>
  53 #include <linux/mm.h>
  54 #include <linux/utsname.h>
  55 #include <linux/highmem.h>
  56 #include <linux/videodev.h>
  57 #include <linux/vmalloc.h>
  58 #include <linux/module.h>
  59 #include <linux/init.h>
  60 #include <linux/spinlock.h>
  61 #include <asm/io.h>
  62 #include <linux/videodev2.h>
  63 #include <linux/video_decoder.h>
  64 #include <linux/i2c.h>
  65
  66 #include <media/saa7115.h>
  67 #include <media/v4l2-common.h>
  68 #include <media/v4l2-ioctl.h>
  69 #include <media/tuner.h>
  70
  71 #include <linux/workqueue.h>
  72
  73 #ifdef CONFIG_KMOD
  74 #include <linux/kmod.h>
  75 #endif
  76
  77 #include "usbvision.h"
  78 #include "usbvision-cards.h"
  79
  80 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  81  Dwaine Garden <DwaineGarden@rogers.com>"
  82 #define DRIVER_NAME "usbvision"
  83 #define DRIVER_ALIAS "USBVision"
  84 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  85 #define DRIVER_LICENSE "GPL"
  86 #define USBVISION_DRIVER_VERSION_MAJOR 0
  87 #define USBVISION_DRIVER_VERSION_MINOR 9
  88 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  89 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  90 USBVISION_DRIVER_VERSION_MINOR,\
  91 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  92 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  93  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  94  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  95
  96 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  97
  98
  99 #ifdef USBVISION_DEBUG
 100         #define PDEBUG(level, fmt, args...) { \
 101                 if (video_debug & (level)) \
 102                         info("[%s:%d] " fmt, __func__, __LINE__ , ## args); \
 103         }
 104 #else
 105         #define PDEBUG(level, fmt, args...) do {} while(0)
 106 #endif
 107
 108 #define DBG_IO          1<<1
 109 #define DBG_PROBE       1<<2
 110 #define DBG_MMAP        1<<3
 111
 112 //String operations
 113 #define rmspace(str)    while(*str==' ') str++;
 114 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 115
 116
 117 /* sequential number of usbvision device */
 118 static int usbvision_nr;
 119
 120 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 121         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 122         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 123         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 124         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 125         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 126         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 127         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 128         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 129 };
 130
 131 /* Function prototypes */
 132 static void usbvision_release(struct usb_usbvision *usbvision);
 133
 134 /* Default initialization of device driver parameters */
 135 /* Set the default format for ISOC endpoint */
 136 static int isocMode = ISOC_MODE_COMPRESS;
 137 /* Set the default Debug Mode of the device driver */
 138 static int video_debug;
 139 /* Set the default device to power on at startup */
 140 static int PowerOnAtOpen = 1;
 141 /* Sequential Number of Video Device */
 142 static int video_nr = -1;
 143 /* Sequential Number of Radio Device */
 144 static int radio_nr = -1;
 145 /* Sequential Number of VBI Device */
 146 static int vbi_nr = -1;
 147
 148 /* Grab parameters for the device driver */
 149
 150 /* Showing parameters under SYSFS */
 151 module_param(isocMode, int, 0444);
 152 module_param(video_debug, int, 0444);
 153 module_param(PowerOnAtOpen, int, 0444);
 154 module_param(video_nr, int, 0444);
 155 module_param(radio_nr, int, 0444);
 156 module_param(vbi_nr, int, 0444);
 157
 158 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 159 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 160 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 161 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 162 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 163 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 164
 165
 166 // Misc stuff
 167 MODULE_AUTHOR(DRIVER_AUTHOR);
 168 MODULE_DESCRIPTION(DRIVER_DESC);
 169 MODULE_LICENSE(DRIVER_LICENSE);
 170 MODULE_VERSION(USBVISION_VERSION_STRING);
 171 MODULE_ALIAS(DRIVER_ALIAS);
 172
 173
 174 /*****************************************************************************/
 175 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 176 /* Device information is located at /sys/class/video4linux/video0            */
 177 /* Device parameters information is located at /sys/module/usbvision         */
 178 /* Device USB Information is located at                                      */
 179 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 180 /*****************************************************************************/
 181
 182 #define YES_NO(x) ((x) ? "Yes" : "No")
 183
 184 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 185 {
 186         struct video_device *vdev =
 187                 container_of(cd, struct video_device, dev);
 188         return video_get_drvdata(vdev);
 189 }
 190
 191 static ssize_t show_version(struct device *cd,
 192                             struct device_attribute *attr, char *buf)
 193 {
 194         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 195 }
 196 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 197
 198 static ssize_t show_model(struct device *cd,
 199                           struct device_attribute *attr, char *buf)
 200 {
 201         struct video_device *vdev =
 202                 container_of(cd, struct video_device, dev);
 203         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 204         return sprintf(buf, "%s\n",
 205                        usbvision_device_data[usbvision->DevModel].ModelString);
 206 }
 207 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 208
 209 static ssize_t show_hue(struct device *cd,
 210                         struct device_attribute *attr, char *buf)
 211 {
 212         struct video_device *vdev =
 213                 container_of(cd, struct video_device, dev);
 214         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 215         struct v4l2_control ctrl;
 216         ctrl.id = V4L2_CID_HUE;
 217         ctrl.value = 0;
 218         if(usbvision->user)
 219                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 220         return sprintf(buf, "%d\n", ctrl.value);
 221 }
 222 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 223
 224 static ssize_t show_contrast(struct device *cd,
 225                              struct device_attribute *attr, char *buf)
 226 {
 227         struct video_device *vdev =
 228                 container_of(cd, struct video_device, dev);
 229         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 230         struct v4l2_control ctrl;
 231         ctrl.id = V4L2_CID_CONTRAST;
 232         ctrl.value = 0;
 233         if(usbvision->user)
 234                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 235         return sprintf(buf, "%d\n", ctrl.value);
 236 }
 237 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 238
 239 static ssize_t show_brightness(struct device *cd,
 240                                struct device_attribute *attr, char *buf)
 241 {
 242         struct video_device *vdev =
 243                 container_of(cd, struct video_device, dev);
 244         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 245         struct v4l2_control ctrl;
 246         ctrl.id = V4L2_CID_BRIGHTNESS;
 247         ctrl.value = 0;
 248         if(usbvision->user)
 249                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 250         return sprintf(buf, "%d\n", ctrl.value);
 251 }
 252 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 253
 254 static ssize_t show_saturation(struct device *cd,
 255                                struct device_attribute *attr, char *buf)
 256 {
 257         struct video_device *vdev =
 258                 container_of(cd, struct video_device, dev);
 259         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 260         struct v4l2_control ctrl;
 261         ctrl.id = V4L2_CID_SATURATION;
 262         ctrl.value = 0;
 263         if(usbvision->user)
 264                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 265         return sprintf(buf, "%d\n", ctrl.value);
 266 }
 267 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 268
 269 static ssize_t show_streaming(struct device *cd,
 270                               struct device_attribute *attr, char *buf)
 271 {
 272         struct video_device *vdev =
 273                 container_of(cd, struct video_device, dev);
 274         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 275         return sprintf(buf, "%s\n",
 276                        YES_NO(usbvision->streaming==Stream_On?1:0));
 277 }
 278 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 279
 280 static ssize_t show_compression(struct device *cd,
 281                                 struct device_attribute *attr, char *buf)
 282 {
 283         struct video_device *vdev =
 284                 container_of(cd, struct video_device, dev);
 285         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 286         return sprintf(buf, "%s\n",
 287                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 288 }
 289 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 290
 291 static ssize_t show_device_bridge(struct device *cd,
 292                                   struct device_attribute *attr, char *buf)
 293 {
 294         struct video_device *vdev =
 295                 container_of(cd, struct video_device, dev);
 296         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 297         return sprintf(buf, "%d\n", usbvision->bridgeType);
 298 }
 299 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 300
 301 static void usbvision_create_sysfs(struct video_device *vdev)
 302 {
 303         int res;
 304         if (!vdev)
 305                 return;
 306         do {
 307                 res = device_create_file(&vdev->dev, &dev_attr_version);
 308                 if (res<0)
 309                         break;
 310                 res = device_create_file(&vdev->dev, &dev_attr_model);
 311                 if (res<0)
 312                         break;
 313                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 314                 if (res<0)
 315                         break;
 316                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 317                 if (res<0)
 318                         break;
 319                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 320                 if (res<0)
 321                         break;
 322                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 323                 if (res<0)
 324                         break;
 325                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 326                 if (res<0)
 327                         break;
 328                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 329                 if (res<0)
 330                         break;
 331                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 332                 if (res>=0)
 333                         return;
 334         } while (0);
 335
 336         err("%s error: %d\n", __func__, res);
 337 }
 338
 339 static void usbvision_remove_sysfs(struct video_device *vdev)
 340 {
 341         if (vdev) {
 342                 device_remove_file(&vdev->dev, &dev_attr_version);
 343                 device_remove_file(&vdev->dev, &dev_attr_model);
 344                 device_remove_file(&vdev->dev, &dev_attr_hue);
 345                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 346                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 347                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 348                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 349                 device_remove_file(&vdev->dev, &dev_attr_compression);
 350                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 351         }
 352 }
 353
 354 /*
 355  * usbvision_open()
 356  *
 357  * This is part of Video 4 Linux API. The driver can be opened by one
 358  * client only (checks internal counter 'usbvision->user'). The procedure
 359  * then allocates buffers needed for video processing.
 360  *
 361  */
 362 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 363 {
 364         struct video_device *dev = video_devdata(file);
 365         struct usb_usbvision *usbvision =
 366                 (struct usb_usbvision *) video_get_drvdata(dev);
 367         int errCode = 0;
 368
 369         PDEBUG(DBG_IO, "open");
 370
 371         usbvision_reset_powerOffTimer(usbvision);
 372
 373         if (usbvision->user)
 374                 errCode = -EBUSY;
 375         else {
 376                 /* Allocate memory for the scratch ring buffer */
 377                 errCode = usbvision_scratch_alloc(usbvision);
 378                 if (isocMode==ISOC_MODE_COMPRESS) {
 379                         /* Allocate intermediate decompression buffers
 380                            only if needed */
 381                         errCode = usbvision_decompress_alloc(usbvision);
 382                 }
 383                 if (errCode) {
 384                         /* Deallocate all buffers if trouble */
 385                         usbvision_scratch_free(usbvision);
 386                         usbvision_decompress_free(usbvision);
 387                 }
 388         }
 389
 390         /* If so far no errors then we shall start the camera */
 391         if (!errCode) {
 392                 mutex_lock(&usbvision->lock);
 393                 if (usbvision->power == 0) {
 394                         usbvision_power_on(usbvision);
 395                         usbvision_i2c_register(usbvision);
 396                 }
 397
 398                 /* Send init sequence only once, it's large! */
 399                 if (!usbvision->initialized) {
 400                         int setup_ok = 0;
 401                         setup_ok = usbvision_setup(usbvision,isocMode);
 402                         if (setup_ok)
 403                                 usbvision->initialized = 1;
 404                         else
 405                                 errCode = -EBUSY;
 406                 }
 407
 408                 if (!errCode) {
 409                         usbvision_begin_streaming(usbvision);
 410                         errCode = usbvision_init_isoc(usbvision);
 411                         /* device must be initialized before isoc transfer */
 412                         usbvision_muxsel(usbvision,0);
 413                         usbvision->user++;
 414                 } else {
 415                         if (PowerOnAtOpen) {
 416                                 usbvision_i2c_unregister(usbvision);
 417                                 usbvision_power_off(usbvision);
 418                                 usbvision->initialized = 0;
 419                         }
 420                 }
 421                 mutex_unlock(&usbvision->lock);
 422         }
 423
 424         /* prepare queues */
 425         usbvision_empty_framequeues(usbvision);
 426
 427         PDEBUG(DBG_IO, "success");
 428         return errCode;
 429 }
 430
 431 /*
 432  * usbvision_v4l2_close()
 433  *
 434  * This is part of Video 4 Linux API. The procedure
 435  * stops streaming and deallocates all buffers that were earlier
 436  * allocated in usbvision_v4l2_open().
 437  *
 438  */
 439 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 440 {
 441         struct video_device *dev = video_devdata(file);
 442         struct usb_usbvision *usbvision =
 443                 (struct usb_usbvision *) video_get_drvdata(dev);
 444
 445         PDEBUG(DBG_IO, "close");
 446         mutex_lock(&usbvision->lock);
 447
 448         usbvision_audio_off(usbvision);
 449         usbvision_restart_isoc(usbvision);
 450         usbvision_stop_isoc(usbvision);
 451
 452         usbvision_decompress_free(usbvision);
 453         usbvision_frames_free(usbvision);
 454         usbvision_empty_framequeues(usbvision);
 455         usbvision_scratch_free(usbvision);
 456
 457         usbvision->user--;
 458
 459         if (PowerOnAtOpen) {
 460                 /* power off in a little while
 461                    to avoid off/on every close/open short sequences */
 462                 usbvision_set_powerOffTimer(usbvision);
 463                 usbvision->initialized = 0;
 464         }
 465
 466         mutex_unlock(&usbvision->lock);
 467
 468         if (usbvision->remove_pending) {
 469                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 470                 usbvision_release(usbvision);
 471         }
 472
 473         PDEBUG(DBG_IO, "success");
 474         return 0;
 475 }
 476
 477
 478 /*
 479  * usbvision_ioctl()
 480  *
 481  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 482  *
 483  */
 484 #ifdef CONFIG_VIDEO_ADV_DEBUG
 485 static int vidioc_g_register (struct file *file, void *priv,
 486                                 struct v4l2_register *reg)
 487 {
 488         struct video_device *dev = video_devdata(file);
 489         struct usb_usbvision *usbvision =
 490                 (struct usb_usbvision *) video_get_drvdata(dev);
 491         int errCode;
 492
 493         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 494                 return -EINVAL;
 495         /* NT100x has a 8-bit register space */
 496         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 497         if (errCode < 0) {
 498                 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
 499                     __func__, errCode);
 500                 return errCode;
 501         }
 502         reg->val = errCode;
 503         return 0;
 504 }
 505
 506 static int vidioc_s_register (struct file *file, void *priv,
 507                                 struct v4l2_register *reg)
 508 {
 509         struct video_device *dev = video_devdata(file);
 510         struct usb_usbvision *usbvision =
 511                 (struct usb_usbvision *) video_get_drvdata(dev);
 512         int errCode;
 513
 514         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 515                 return -EINVAL;
 516         /* NT100x has a 8-bit register space */
 517         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 518         if (errCode < 0) {
 519                 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
 520                     __func__, errCode);
 521                 return errCode;
 522         }
 523         return 0;
 524 }
 525 #endif
 526
 527 static int vidioc_querycap (struct file *file, void  *priv,
 528                                         struct v4l2_capability *vc)
 529 {
 530         struct video_device *dev = video_devdata(file);
 531         struct usb_usbvision *usbvision =
 532                 (struct usb_usbvision *) video_get_drvdata(dev);
 533
 534         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 535         strlcpy(vc->card,
 536                 usbvision_device_data[usbvision->DevModel].ModelString,
 537                 sizeof(vc->card));
 538         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 539                 sizeof(vc->bus_info));
 540         vc->version = USBVISION_DRIVER_VERSION;
 541         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 542                 V4L2_CAP_AUDIO |
 543                 V4L2_CAP_READWRITE |
 544                 V4L2_CAP_STREAMING |
 545                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 546         return 0;
 547 }
 548
 549 static int vidioc_enum_input (struct file *file, void *priv,
 550                                 struct v4l2_input *vi)
 551 {
 552         struct video_device *dev = video_devdata(file);
 553         struct usb_usbvision *usbvision =
 554                 (struct usb_usbvision *) video_get_drvdata(dev);
 555         int chan;
 556
 557         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 558                 return -EINVAL;
 559         if (usbvision->have_tuner) {
 560                 chan = vi->index;
 561         } else {
 562                 chan = vi->index + 1; /*skip Television string*/
 563         }
 564         /* Determine the requested input characteristics
 565            specific for each usbvision card model */
 566         switch(chan) {
 567         case 0:
 568                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 569                         strcpy(vi->name, "White Video Input");
 570                 } else {
 571                         strcpy(vi->name, "Television");
 572                         vi->type = V4L2_INPUT_TYPE_TUNER;
 573                         vi->audioset = 1;
 574                         vi->tuner = chan;
 575                         vi->std = USBVISION_NORMS;
 576                 }
 577                 break;
 578         case 1:
 579                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 580                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 581                         strcpy(vi->name, "Green Video Input");
 582                 } else {
 583                         strcpy(vi->name, "Composite Video Input");
 584                 }
 585                 vi->std = V4L2_STD_PAL;
 586                 break;
 587         case 2:
 588                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 589                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 590                         strcpy(vi->name, "Yellow Video Input");
 591                 } else {
 592                         strcpy(vi->name, "S-Video Input");
 593                 }
 594                 vi->std = V4L2_STD_PAL;
 595                 break;
 596         case 3:
 597                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 598                 strcpy(vi->name, "Red Video Input");
 599                 vi->std = V4L2_STD_PAL;
 600                 break;
 601         }
 602         return 0;
 603 }
 604
 605 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 606 {
 607         struct video_device *dev = video_devdata(file);
 608         struct usb_usbvision *usbvision =
 609                 (struct usb_usbvision *) video_get_drvdata(dev);
 610
 611         *input = usbvision->ctl_input;
 612         return 0;
 613 }
 614
 615 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 616 {
 617         struct video_device *dev = video_devdata(file);
 618         struct usb_usbvision *usbvision =
 619                 (struct usb_usbvision *) video_get_drvdata(dev);
 620
 621         if ((input >= usbvision->video_inputs) || (input < 0) )
 622                 return -EINVAL;
 623
 624         mutex_lock(&usbvision->lock);
 625         usbvision_muxsel(usbvision, input);
 626         usbvision_set_input(usbvision);
 627         usbvision_set_output(usbvision,
 628                              usbvision->curwidth,
 629                              usbvision->curheight);
 630         mutex_unlock(&usbvision->lock);
 631         return 0;
 632 }
 633
 634 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 635 {
 636         struct video_device *dev = video_devdata(file);
 637         struct usb_usbvision *usbvision =
 638                 (struct usb_usbvision *) video_get_drvdata(dev);
 639         usbvision->tvnormId=*id;
 640
 641         mutex_lock(&usbvision->lock);
 642         call_i2c_clients(usbvision, VIDIOC_S_STD,
 643                          &usbvision->tvnormId);
 644         mutex_unlock(&usbvision->lock);
 645         /* propagate the change to the decoder */
 646         usbvision_muxsel(usbvision, usbvision->ctl_input);
 647
 648         return 0;
 649 }
 650
 651 static int vidioc_g_tuner (struct file *file, void *priv,
 652                                 struct v4l2_tuner *vt)
 653 {
 654         struct video_device *dev = video_devdata(file);
 655         struct usb_usbvision *usbvision =
 656                 (struct usb_usbvision *) video_get_drvdata(dev);
 657
 658         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 659                 return -EINVAL;
 660         if(usbvision->radio) {
 661                 strcpy(vt->name, "Radio");
 662                 vt->type = V4L2_TUNER_RADIO;
 663         } else {
 664                 strcpy(vt->name, "Television");
 665         }
 666         /* Let clients fill in the remainder of this struct */
 667         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 668
 669         return 0;
 670 }
 671
 672 static int vidioc_s_tuner (struct file *file, void *priv,
 673                                 struct v4l2_tuner *vt)
 674 {
 675         struct video_device *dev = video_devdata(file);
 676         struct usb_usbvision *usbvision =
 677                 (struct usb_usbvision *) video_get_drvdata(dev);
 678
 679         // Only no or one tuner for now
 680         if (!usbvision->have_tuner || vt->index)
 681                 return -EINVAL;
 682         /* let clients handle this */
 683         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 684
 685         return 0;
 686 }
 687
 688 static int vidioc_g_frequency (struct file *file, void *priv,
 689                                 struct v4l2_frequency *freq)
 690 {
 691         struct video_device *dev = video_devdata(file);
 692         struct usb_usbvision *usbvision =
 693                 (struct usb_usbvision *) video_get_drvdata(dev);
 694
 695         freq->tuner = 0; // Only one tuner
 696         if(usbvision->radio) {
 697                 freq->type = V4L2_TUNER_RADIO;
 698         } else {
 699                 freq->type = V4L2_TUNER_ANALOG_TV;
 700         }
 701         freq->frequency = usbvision->freq;
 702
 703         return 0;
 704 }
 705
 706 static int vidioc_s_frequency (struct file *file, void *priv,
 707                                 struct v4l2_frequency *freq)
 708 {
 709         struct video_device *dev = video_devdata(file);
 710         struct usb_usbvision *usbvision =
 711                 (struct usb_usbvision *) video_get_drvdata(dev);
 712
 713         // Only no or one tuner for now
 714         if (!usbvision->have_tuner || freq->tuner)
 715                 return -EINVAL;
 716
 717         usbvision->freq = freq->frequency;
 718         call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
 719
 720         return 0;
 721 }
 722
 723 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 724 {
 725         struct video_device *dev = video_devdata(file);
 726         struct usb_usbvision *usbvision =
 727                 (struct usb_usbvision *) video_get_drvdata(dev);
 728
 729         memset(a,0,sizeof(*a));
 730         if(usbvision->radio) {
 731                 strcpy(a->name,"Radio");
 732         } else {
 733                 strcpy(a->name, "TV");
 734         }
 735
 736         return 0;
 737 }
 738
 739 static int vidioc_s_audio (struct file *file, void *fh,
 740                           struct v4l2_audio *a)
 741 {
 742         if(a->index) {
 743                 return -EINVAL;
 744         }
 745
 746         return 0;
 747 }
 748
 749 static int vidioc_queryctrl (struct file *file, void *priv,
 750                             struct v4l2_queryctrl *ctrl)
 751 {
 752         struct video_device *dev = video_devdata(file);
 753         struct usb_usbvision *usbvision =
 754                 (struct usb_usbvision *) video_get_drvdata(dev);
 755         int id=ctrl->id;
 756
 757         memset(ctrl,0,sizeof(*ctrl));
 758         ctrl->id=id;
 759
 760         call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
 761
 762         if (!ctrl->type)
 763                 return -EINVAL;
 764
 765         return 0;
 766 }
 767
 768 static int vidioc_g_ctrl (struct file *file, void *priv,
 769                                 struct v4l2_control *ctrl)
 770 {
 771         struct video_device *dev = video_devdata(file);
 772         struct usb_usbvision *usbvision =
 773                 (struct usb_usbvision *) video_get_drvdata(dev);
 774         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 775
 776         return 0;
 777 }
 778
 779 static int vidioc_s_ctrl (struct file *file, void *priv,
 780                                 struct v4l2_control *ctrl)
 781 {
 782         struct video_device *dev = video_devdata(file);
 783         struct usb_usbvision *usbvision =
 784                 (struct usb_usbvision *) video_get_drvdata(dev);
 785         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 786
 787         return 0;
 788 }
 789
 790 static int vidioc_reqbufs (struct file *file,
 791                            void *priv, struct v4l2_requestbuffers *vr)
 792 {
 793         struct video_device *dev = video_devdata(file);
 794         struct usb_usbvision *usbvision =
 795                 (struct usb_usbvision *) video_get_drvdata(dev);
 796         int ret;
 797
 798         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 799
 800         /* Check input validity:
 801            the user must do a VIDEO CAPTURE and MMAP method. */
 802         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 803            (vr->memory != V4L2_MEMORY_MMAP))
 804                 return -EINVAL;
 805
 806         if(usbvision->streaming == Stream_On) {
 807                 if ((ret = usbvision_stream_interrupt(usbvision)))
 808                         return ret;
 809         }
 810
 811         usbvision_frames_free(usbvision);
 812         usbvision_empty_framequeues(usbvision);
 813         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 814
 815         usbvision->curFrame = NULL;
 816
 817         return 0;
 818 }
 819
 820 static int vidioc_querybuf (struct file *file,
 821                             void *priv, struct v4l2_buffer *vb)
 822 {
 823         struct video_device *dev = video_devdata(file);
 824         struct usb_usbvision *usbvision =
 825                 (struct usb_usbvision *) video_get_drvdata(dev);
 826         struct usbvision_frame *frame;
 827
 828         /* FIXME : must control
 829            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 830         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 831                 return -EINVAL;
 832         }
 833         if(vb->index>=usbvision->num_frames)  {
 834                 return -EINVAL;
 835         }
 836         /* Updating the corresponding frame state */
 837         vb->flags = 0;
 838         frame = &usbvision->frame[vb->index];
 839         if(frame->grabstate >= FrameState_Ready)
 840                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 841         if(frame->grabstate >= FrameState_Done)
 842                 vb->flags |= V4L2_BUF_FLAG_DONE;
 843         if(frame->grabstate == FrameState_Unused)
 844                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 845         vb->memory = V4L2_MEMORY_MMAP;
 846
 847         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 848
 849         vb->memory = V4L2_MEMORY_MMAP;
 850         vb->field = V4L2_FIELD_NONE;
 851         vb->length = usbvision->curwidth*
 852                 usbvision->curheight*
 853                 usbvision->palette.bytes_per_pixel;
 854         vb->timestamp = usbvision->frame[vb->index].timestamp;
 855         vb->sequence = usbvision->frame[vb->index].sequence;
 856         return 0;
 857 }
 858
 859 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 860 {
 861         struct video_device *dev = video_devdata(file);
 862         struct usb_usbvision *usbvision =
 863                 (struct usb_usbvision *) video_get_drvdata(dev);
 864         struct usbvision_frame *frame;
 865         unsigned long lock_flags;
 866
 867         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 868         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 869                 return -EINVAL;
 870         }
 871         if(vb->index>=usbvision->num_frames)  {
 872                 return -EINVAL;
 873         }
 874
 875         frame = &usbvision->frame[vb->index];
 876
 877         if (frame->grabstate != FrameState_Unused) {
 878                 return -EAGAIN;
 879         }
 880
 881         /* Mark it as ready and enqueue frame */
 882         frame->grabstate = FrameState_Ready;
 883         frame->scanstate = ScanState_Scanning;
 884         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 885
 886         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 887
 888         /* set v4l2_format index */
 889         frame->v4l2_format = usbvision->palette;
 890
 891         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 892         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 893         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 894
 895         return 0;
 896 }
 897
 898 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 899 {
 900         struct video_device *dev = video_devdata(file);
 901         struct usb_usbvision *usbvision =
 902                 (struct usb_usbvision *) video_get_drvdata(dev);
 903         int ret;
 904         struct usbvision_frame *f;
 905         unsigned long lock_flags;
 906
 907         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 908                 return -EINVAL;
 909
 910         if (list_empty(&(usbvision->outqueue))) {
 911                 if (usbvision->streaming == Stream_Idle)
 912                         return -EINVAL;
 913                 ret = wait_event_interruptible
 914                         (usbvision->wait_frame,
 915                          !list_empty(&(usbvision->outqueue)));
 916                 if (ret)
 917                         return ret;
 918         }
 919
 920         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 921         f = list_entry(usbvision->outqueue.next,
 922                        struct usbvision_frame, frame);
 923         list_del(usbvision->outqueue.next);
 924         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 925
 926         f->grabstate = FrameState_Unused;
 927
 928         vb->memory = V4L2_MEMORY_MMAP;
 929         vb->flags = V4L2_BUF_FLAG_MAPPED |
 930                 V4L2_BUF_FLAG_QUEUED |
 931                 V4L2_BUF_FLAG_DONE;
 932         vb->index = f->index;
 933         vb->sequence = f->sequence;
 934         vb->timestamp = f->timestamp;
 935         vb->field = V4L2_FIELD_NONE;
 936         vb->bytesused = f->scanlength;
 937
 938         return 0;
 939 }
 940
 941 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 942 {
 943         struct video_device *dev = video_devdata(file);
 944         struct usb_usbvision *usbvision =
 945                 (struct usb_usbvision *) video_get_drvdata(dev);
 946         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 947
 948         usbvision->streaming = Stream_On;
 949         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 950
 951         return 0;
 952 }
 953
 954 static int vidioc_streamoff(struct file *file,
 955                             void *priv, enum v4l2_buf_type type)
 956 {
 957         struct video_device *dev = video_devdata(file);
 958         struct usb_usbvision *usbvision =
 959                 (struct usb_usbvision *) video_get_drvdata(dev);
 960         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 961
 962         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 963                 return -EINVAL;
 964
 965         if(usbvision->streaming == Stream_On) {
 966                 usbvision_stream_interrupt(usbvision);
 967                 /* Stop all video streamings */
 968                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 969         }
 970         usbvision_empty_framequeues(usbvision);
 971
 972         return 0;
 973 }
 974
 975 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 976                                         struct v4l2_fmtdesc *vfd)
 977 {
 978         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 979                 return -EINVAL;
 980         }
 981         vfd->flags = 0;
 982         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 983         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 984         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 985         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 986         return 0;
 987 }
 988
 989 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 990                                         struct v4l2_format *vf)
 991 {
 992         struct video_device *dev = video_devdata(file);
 993         struct usb_usbvision *usbvision =
 994                 (struct usb_usbvision *) video_get_drvdata(dev);
 995         vf->fmt.pix.width = usbvision->curwidth;
 996         vf->fmt.pix.height = usbvision->curheight;
 997         vf->fmt.pix.pixelformat = usbvision->palette.format;
 998         vf->fmt.pix.bytesperline =
 999                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
1000         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
1001         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1002         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
1003
1004         return 0;
1005 }
1006
1007 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
1008                                struct v4l2_format *vf)
1009 {
1010         struct video_device *dev = video_devdata(file);
1011         struct usb_usbvision *usbvision =
1012                 (struct usb_usbvision *) video_get_drvdata(dev);
1013         int formatIdx;
1014
1015         /* Find requested format in available ones */
1016         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1017                 if(vf->fmt.pix.pixelformat ==
1018                    usbvision_v4l2_format[formatIdx].format) {
1019                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1020                         break;
1021                 }
1022         }
1023         /* robustness */
1024         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1025                 return -EINVAL;
1026         }
1027         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1028         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1029
1030         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
1031                 usbvision->palette.bytes_per_pixel;
1032         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1033
1034         return 0;
1035 }
1036
1037 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1038                                struct v4l2_format *vf)
1039 {
1040         struct video_device *dev = video_devdata(file);
1041         struct usb_usbvision *usbvision =
1042                 (struct usb_usbvision *) video_get_drvdata(dev);
1043         int ret;
1044
1045         if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
1046                 return ret;
1047         }
1048
1049         /* stop io in case it is already in progress */
1050         if(usbvision->streaming == Stream_On) {
1051                 if ((ret = usbvision_stream_interrupt(usbvision)))
1052                         return ret;
1053         }
1054         usbvision_frames_free(usbvision);
1055         usbvision_empty_framequeues(usbvision);
1056
1057         usbvision->curFrame = NULL;
1058
1059         /* by now we are committed to the new data... */
1060         mutex_lock(&usbvision->lock);
1061         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1062         mutex_unlock(&usbvision->lock);
1063
1064         return 0;
1065 }
1066
1067 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1068                       size_t count, loff_t *ppos)
1069 {
1070         struct video_device *dev = video_devdata(file);
1071         struct usb_usbvision *usbvision =
1072                 (struct usb_usbvision *) video_get_drvdata(dev);
1073         int noblock = file->f_flags & O_NONBLOCK;
1074         unsigned long lock_flags;
1075
1076         int ret,i;
1077         struct usbvision_frame *frame;
1078
1079         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1080                (unsigned long)count, noblock);
1081
1082         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1083                 return -EFAULT;
1084
1085         /* This entry point is compatible with the mmap routines
1086            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1087            to get frames or call read on the device. */
1088         if(!usbvision->num_frames) {
1089                 /* First, allocate some frames to work with
1090                    if this has not been done with VIDIOC_REQBUF */
1091                 usbvision_frames_free(usbvision);
1092                 usbvision_empty_framequeues(usbvision);
1093                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1094         }
1095
1096         if(usbvision->streaming != Stream_On) {
1097                 /* no stream is running, make it running ! */
1098                 usbvision->streaming = Stream_On;
1099                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1100         }
1101
1102         /* Then, enqueue as many frames as possible
1103            (like a user of VIDIOC_QBUF would do) */
1104         for(i=0;i<usbvision->num_frames;i++) {
1105                 frame = &usbvision->frame[i];
1106                 if(frame->grabstate == FrameState_Unused) {
1107                         /* Mark it as ready and enqueue frame */
1108                         frame->grabstate = FrameState_Ready;
1109                         frame->scanstate = ScanState_Scanning;
1110                         /* Accumulated in usbvision_parse_data() */
1111                         frame->scanlength = 0;
1112
1113                         /* set v4l2_format index */
1114                         frame->v4l2_format = usbvision->palette;
1115
1116                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1117                         list_add_tail(&frame->frame, &usbvision->inqueue);
1118                         spin_unlock_irqrestore(&usbvision->queue_lock,
1119                                                lock_flags);
1120                 }
1121         }
1122
1123         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1124         if (list_empty(&(usbvision->outqueue))) {
1125                 if(noblock)
1126                         return -EAGAIN;
1127
1128                 ret = wait_event_interruptible
1129                         (usbvision->wait_frame,
1130                          !list_empty(&(usbvision->outqueue)));
1131                 if (ret)
1132                         return ret;
1133         }
1134
1135         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1136         frame = list_entry(usbvision->outqueue.next,
1137                            struct usbvision_frame, frame);
1138         list_del(usbvision->outqueue.next);
1139         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1140
1141         /* An error returns an empty frame */
1142         if (frame->grabstate == FrameState_Error) {
1143                 frame->bytes_read = 0;
1144                 return 0;
1145         }
1146
1147         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1148                __func__,
1149                frame->index, frame->bytes_read, frame->scanlength);
1150
1151         /* copy bytes to user space; we allow for partials reads */
1152         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1153                 count = frame->scanlength - frame->bytes_read;
1154
1155         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1156                 return -EFAULT;
1157         }
1158
1159         frame->bytes_read += count;
1160         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1161                __func__,
1162                (unsigned long)count, frame->bytes_read);
1163
1164         /* For now, forget the frame if it has not been read in one shot. */
1165 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1166                 frame->bytes_read = 0;
1167
1168                 /* Mark it as available to be used again. */
1169                 frame->grabstate = FrameState_Unused;
1170 /*      } */
1171
1172         return count;
1173 }
1174
1175 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1176 {
1177         unsigned long size = vma->vm_end - vma->vm_start,
1178                 start = vma->vm_start;
1179         void *pos;
1180         u32 i;
1181
1182         struct video_device *dev = video_devdata(file);
1183         struct usb_usbvision *usbvision =
1184                 (struct usb_usbvision *) video_get_drvdata(dev);
1185
1186         PDEBUG(DBG_MMAP, "mmap");
1187
1188         mutex_lock(&usbvision->lock);
1189
1190         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1191                 mutex_unlock(&usbvision->lock);
1192                 return -EFAULT;
1193         }
1194
1195         if (!(vma->vm_flags & VM_WRITE) ||
1196             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1197                 mutex_unlock(&usbvision->lock);
1198                 return -EINVAL;
1199         }
1200
1201         for (i = 0; i < usbvision->num_frames; i++) {
1202                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1203                     vma->vm_pgoff)
1204                         break;
1205         }
1206         if (i == usbvision->num_frames) {
1207                 PDEBUG(DBG_MMAP,
1208                        "mmap: user supplied mapping address is out of range");
1209                 mutex_unlock(&usbvision->lock);
1210                 return -EINVAL;
1211         }
1212
1213         /* VM_IO is eventually going to replace PageReserved altogether */
1214         vma->vm_flags |= VM_IO;
1215         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1216
1217         pos = usbvision->frame[i].data;
1218         while (size > 0) {
1219
1220                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1221                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1222                         mutex_unlock(&usbvision->lock);
1223                         return -EAGAIN;
1224                 }
1225                 start += PAGE_SIZE;
1226                 pos += PAGE_SIZE;
1227                 size -= PAGE_SIZE;
1228         }
1229
1230         mutex_unlock(&usbvision->lock);
1231         return 0;
1232 }
1233
1234
1235 /*
1236  * Here comes the stuff for radio on usbvision based devices
1237  *
1238  */
1239 static int usbvision_radio_open(struct inode *inode, struct file *file)
1240 {
1241         struct video_device *dev = video_devdata(file);
1242         struct usb_usbvision *usbvision =
1243                 (struct usb_usbvision *) video_get_drvdata(dev);
1244         int errCode = 0;
1245
1246         PDEBUG(DBG_IO, "%s:", __func__);
1247
1248         mutex_lock(&usbvision->lock);
1249
1250         if (usbvision->user) {
1251                 err("%s: Someone tried to open an already opened USBVision Radio!", __func__);
1252                 errCode = -EBUSY;
1253         }
1254         else {
1255                 if(PowerOnAtOpen) {
1256                         usbvision_reset_powerOffTimer(usbvision);
1257                         if (usbvision->power == 0) {
1258                                 usbvision_power_on(usbvision);
1259                                 usbvision_i2c_register(usbvision);
1260                         }
1261                 }
1262
1263                 /* Alternate interface 1 is is the biggest frame size */
1264                 errCode = usbvision_set_alternate(usbvision);
1265                 if (errCode < 0) {
1266                         usbvision->last_error = errCode;
1267                         errCode = -EBUSY;
1268                         goto out;
1269                 }
1270
1271                 // If so far no errors then we shall start the radio
1272                 usbvision->radio = 1;
1273                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1274                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1275                 usbvision->user++;
1276         }
1277
1278         if (errCode) {
1279                 if (PowerOnAtOpen) {
1280                         usbvision_i2c_unregister(usbvision);
1281                         usbvision_power_off(usbvision);
1282                         usbvision->initialized = 0;
1283                 }
1284         }
1285 out:
1286         mutex_unlock(&usbvision->lock);
1287         return errCode;
1288 }
1289
1290
1291 static int usbvision_radio_close(struct inode *inode, struct file *file)
1292 {
1293         struct video_device *dev = video_devdata(file);
1294         struct usb_usbvision *usbvision =
1295                 (struct usb_usbvision *) video_get_drvdata(dev);
1296         int errCode = 0;
1297
1298         PDEBUG(DBG_IO, "");
1299
1300         mutex_lock(&usbvision->lock);
1301
1302         /* Set packet size to 0 */
1303         usbvision->ifaceAlt=0;
1304         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1305                                     usbvision->ifaceAlt);
1306
1307         usbvision_audio_off(usbvision);
1308         usbvision->radio=0;
1309         usbvision->user--;
1310
1311         if (PowerOnAtOpen) {
1312                 usbvision_set_powerOffTimer(usbvision);
1313                 usbvision->initialized = 0;
1314         }
1315
1316         mutex_unlock(&usbvision->lock);
1317
1318         if (usbvision->remove_pending) {
1319                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1320                 usbvision_release(usbvision);
1321         }
1322
1323         PDEBUG(DBG_IO, "success");
1324         return errCode;
1325 }
1326
1327 /*
1328  * Here comes the stuff for vbi on usbvision based devices
1329  *
1330  */
1331 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1332 {
1333         /* TODO */
1334         return -ENODEV;
1335 }
1336
1337 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1338 {
1339         /* TODO */
1340         return -ENODEV;
1341 }
1342
1343 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1344                                  unsigned int cmd, void *arg)
1345 {
1346         /* TODO */
1347         return -ENOIOCTLCMD;
1348 }
1349
1350 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1351                        unsigned int cmd, unsigned long arg)
1352 {
1353         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1354 }
1355
1356
1357 //
1358 // Video registration stuff
1359 //
1360
1361 // Video template
1362 static const struct file_operations usbvision_fops = {
1363         .owner             = THIS_MODULE,
1364         .open           = usbvision_v4l2_open,
1365         .release        = usbvision_v4l2_close,
1366         .read           = usbvision_v4l2_read,
1367         .mmap           = usbvision_v4l2_mmap,
1368         .ioctl          = video_ioctl2,
1369         .llseek         = no_llseek,
1370 /*      .poll          = video_poll, */
1371         .compat_ioctl  = v4l_compat_ioctl32,
1372 };
1373
1374 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1375         .vidioc_querycap      = vidioc_querycap,
1376         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1377         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1378         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1379         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1380         .vidioc_reqbufs       = vidioc_reqbufs,
1381         .vidioc_querybuf      = vidioc_querybuf,
1382         .vidioc_qbuf          = vidioc_qbuf,
1383         .vidioc_dqbuf         = vidioc_dqbuf,
1384         .vidioc_s_std         = vidioc_s_std,
1385         .vidioc_enum_input    = vidioc_enum_input,
1386         .vidioc_g_input       = vidioc_g_input,
1387         .vidioc_s_input       = vidioc_s_input,
1388         .vidioc_queryctrl     = vidioc_queryctrl,
1389         .vidioc_g_audio       = vidioc_g_audio,
1390         .vidioc_s_audio       = vidioc_s_audio,
1391         .vidioc_g_ctrl        = vidioc_g_ctrl,
1392         .vidioc_s_ctrl        = vidioc_s_ctrl,
1393         .vidioc_streamon      = vidioc_streamon,
1394         .vidioc_streamoff     = vidioc_streamoff,
1395 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1396 /*      .vidiocgmbuf          = vidiocgmbuf, */
1397 #endif
1398         .vidioc_g_tuner       = vidioc_g_tuner,
1399         .vidioc_s_tuner       = vidioc_s_tuner,
1400         .vidioc_g_frequency   = vidioc_g_frequency,
1401         .vidioc_s_frequency   = vidioc_s_frequency,
1402 #ifdef CONFIG_VIDEO_ADV_DEBUG
1403         .vidioc_g_register    = vidioc_g_register,
1404         .vidioc_s_register    = vidioc_s_register,
1405 #endif
1406 };
1407
1408 static struct video_device usbvision_video_template = {
1409         .owner             = THIS_MODULE,
1410         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1411         .fops           = &usbvision_fops,
1412         .ioctl_ops      = &usbvision_ioctl_ops,
1413         .name           = "usbvision-video",
1414         .release        = video_device_release,
1415         .minor          = -1,
1416         .tvnorms              = USBVISION_NORMS,
1417         .current_norm         = V4L2_STD_PAL
1418 };
1419
1420
1421 // Radio template
1422 static const struct file_operations usbvision_radio_fops = {
1423         .owner             = THIS_MODULE,
1424         .open           = usbvision_radio_open,
1425         .release        = usbvision_radio_close,
1426         .ioctl          = video_ioctl2,
1427         .llseek         = no_llseek,
1428         .compat_ioctl  = v4l_compat_ioctl32,
1429 };
1430
1431 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1432         .vidioc_querycap      = vidioc_querycap,
1433         .vidioc_enum_input    = vidioc_enum_input,
1434         .vidioc_g_input       = vidioc_g_input,
1435         .vidioc_s_input       = vidioc_s_input,
1436         .vidioc_queryctrl     = vidioc_queryctrl,
1437         .vidioc_g_audio       = vidioc_g_audio,
1438         .vidioc_s_audio       = vidioc_s_audio,
1439         .vidioc_g_ctrl        = vidioc_g_ctrl,
1440         .vidioc_s_ctrl        = vidioc_s_ctrl,
1441         .vidioc_g_tuner       = vidioc_g_tuner,
1442         .vidioc_s_tuner       = vidioc_s_tuner,
1443         .vidioc_g_frequency   = vidioc_g_frequency,
1444         .vidioc_s_frequency   = vidioc_s_frequency,
1445 };
1446
1447 static struct video_device usbvision_radio_template = {
1448         .owner             = THIS_MODULE,
1449         .type           = VID_TYPE_TUNER,
1450         .fops           = &usbvision_radio_fops,
1451         .name           = "usbvision-radio",
1452         .release        = video_device_release,
1453         .minor          = -1,
1454         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1455
1456         .tvnorms              = USBVISION_NORMS,
1457         .current_norm         = V4L2_STD_PAL
1458 };
1459
1460 // vbi template
1461 static const struct file_operations usbvision_vbi_fops = {
1462         .owner             = THIS_MODULE,
1463         .open           = usbvision_vbi_open,
1464         .release        = usbvision_vbi_close,
1465         .ioctl          = usbvision_vbi_ioctl,
1466         .llseek         = no_llseek,
1467         .compat_ioctl  = v4l_compat_ioctl32,
1468 };
1469
1470 static struct video_device usbvision_vbi_template=
1471 {
1472         .owner             = THIS_MODULE,
1473         .type           = VID_TYPE_TUNER,
1474         .fops           = &usbvision_vbi_fops,
1475         .release        = video_device_release,
1476         .name           = "usbvision-vbi",
1477         .minor          = -1,
1478 };
1479
1480
1481 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1482                                         struct video_device *vdev_template,
1483                                         char *name)
1484 {
1485         struct usb_device *usb_dev = usbvision->dev;
1486         struct video_device *vdev;
1487
1488         if (usb_dev == NULL) {
1489                 err("%s: usbvision->dev is not set", __func__);
1490                 return NULL;
1491         }
1492
1493         vdev = video_device_alloc();
1494         if (NULL == vdev) {
1495                 return NULL;
1496         }
1497         *vdev = *vdev_template;
1498 //      vdev->minor   = -1;
1499         vdev->parent  = &usb_dev->dev;
1500         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1501         video_set_drvdata(vdev, usbvision);
1502         return vdev;
1503 }
1504
1505 // unregister video4linux devices
1506 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1507 {
1508         // vbi Device:
1509         if (usbvision->vbi) {
1510                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1511                        usbvision->vbi->minor & 0x1f);
1512                 if (usbvision->vbi->minor != -1) {
1513                         video_unregister_device(usbvision->vbi);
1514                 } else {
1515                         video_device_release(usbvision->vbi);
1516                 }
1517                 usbvision->vbi = NULL;
1518         }
1519
1520         // Radio Device:
1521         if (usbvision->rdev) {
1522                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1523                        usbvision->rdev->minor & 0x1f);
1524                 if (usbvision->rdev->minor != -1) {
1525                         video_unregister_device(usbvision->rdev);
1526                 } else {
1527                         video_device_release(usbvision->rdev);
1528                 }
1529                 usbvision->rdev = NULL;
1530         }
1531
1532         // Video Device:
1533         if (usbvision->vdev) {
1534                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1535                        usbvision->vdev->minor & 0x1f);
1536                 if (usbvision->vdev->minor != -1) {
1537                         video_unregister_device(usbvision->vdev);
1538                 } else {
1539                         video_device_release(usbvision->vdev);
1540                 }
1541                 usbvision->vdev = NULL;
1542         }
1543 }
1544
1545 // register video4linux devices
1546 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1547 {
1548         // Video Device:
1549         usbvision->vdev = usbvision_vdev_init(usbvision,
1550                                               &usbvision_video_template,
1551                                               "USBVision Video");
1552         if (usbvision->vdev == NULL) {
1553                 goto err_exit;
1554         }
1555         if (video_register_device(usbvision->vdev,
1556                                   VFL_TYPE_GRABBER,
1557                                   video_nr)<0) {
1558                 goto err_exit;
1559         }
1560         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1561                usbvision->nr,usbvision->vdev->minor & 0x1f);
1562
1563         // Radio Device:
1564         if (usbvision_device_data[usbvision->DevModel].Radio) {
1565                 // usbvision has radio
1566                 usbvision->rdev = usbvision_vdev_init(usbvision,
1567                                                       &usbvision_radio_template,
1568                                                       "USBVision Radio");
1569                 if (usbvision->rdev == NULL) {
1570                         goto err_exit;
1571                 }
1572                 if (video_register_device(usbvision->rdev,
1573                                           VFL_TYPE_RADIO,
1574                                           radio_nr)<0) {
1575                         goto err_exit;
1576                 }
1577                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1578                        usbvision->nr, usbvision->rdev->minor & 0x1f);
1579         }
1580         // vbi Device:
1581         if (usbvision_device_data[usbvision->DevModel].vbi) {
1582                 usbvision->vbi = usbvision_vdev_init(usbvision,
1583                                                      &usbvision_vbi_template,
1584                                                      "USBVision VBI");
1585                 if (usbvision->vdev == NULL) {
1586                         goto err_exit;
1587                 }
1588                 if (video_register_device(usbvision->vbi,
1589                                           VFL_TYPE_VBI,
1590                                           vbi_nr)<0) {
1591                         goto err_exit;
1592                 }
1593                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1594                        usbvision->nr,usbvision->vbi->minor & 0x1f);
1595         }
1596         // all done
1597         return 0;
1598
1599  err_exit:
1600         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1601         usbvision_unregister_video(usbvision);
1602         return -1;
1603 }
1604
1605 /*
1606  * usbvision_alloc()
1607  *
1608  * This code allocates the struct usb_usbvision.
1609  * It is filled with default values.
1610  *
1611  * Returns NULL on error, a pointer to usb_usbvision else.
1612  *
1613  */
1614 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1615 {
1616         struct usb_usbvision *usbvision;
1617
1618         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1619             NULL) {
1620                 goto err_exit;
1621         }
1622
1623         usbvision->dev = dev;
1624
1625         mutex_init(&usbvision->lock);   /* available */
1626
1627         // prepare control urb for control messages during interrupts
1628         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1629         if (usbvision->ctrlUrb == NULL) {
1630                 goto err_exit;
1631         }
1632         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1633
1634         usbvision_init_powerOffTimer(usbvision);
1635
1636         return usbvision;
1637
1638 err_exit:
1639         if (usbvision && usbvision->ctrlUrb) {
1640                 usb_free_urb(usbvision->ctrlUrb);
1641         }
1642         if (usbvision) {
1643                 kfree(usbvision);
1644         }
1645         return NULL;
1646 }
1647
1648 /*
1649  * usbvision_release()
1650  *
1651  * This code does final release of struct usb_usbvision. This happens
1652  * after the device is disconnected -and- all clients closed their files.
1653  *
1654  */
1655 static void usbvision_release(struct usb_usbvision *usbvision)
1656 {
1657         PDEBUG(DBG_PROBE, "");
1658
1659         mutex_lock(&usbvision->lock);
1660
1661         usbvision_reset_powerOffTimer(usbvision);
1662
1663         usbvision->initialized = 0;
1664
1665         mutex_unlock(&usbvision->lock);
1666
1667         usbvision_remove_sysfs(usbvision->vdev);
1668         usbvision_unregister_video(usbvision);
1669
1670         if (usbvision->ctrlUrb) {
1671                 usb_free_urb(usbvision->ctrlUrb);
1672         }
1673
1674         kfree(usbvision);
1675
1676         PDEBUG(DBG_PROBE, "success");
1677 }
1678
1679
1680 /*********************** usb interface **********************************/
1681
1682 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1683 {
1684         int model;
1685
1686         if (usbvision == NULL)
1687                 return;
1688
1689         model = usbvision->DevModel;
1690         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1691
1692         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1693                 usbvision->Vin_Reg2_Preset =
1694                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1695         } else {
1696                 usbvision->Vin_Reg2_Preset = 0;
1697         }
1698
1699         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1700
1701         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1702         usbvision->ctl_input = 0;
1703
1704         /* This should be here to make i2c clients to be able to register */
1705         /* first switch off audio */
1706         usbvision_audio_off(usbvision);
1707         if (!PowerOnAtOpen) {
1708                 /* and then power up the noisy tuner */
1709                 usbvision_power_on(usbvision);
1710                 usbvision_i2c_register(usbvision);
1711         }
1712 }
1713
1714 /*
1715  * usbvision_probe()
1716  *
1717  * This procedure queries device descriptor and accepts the interface
1718  * if it looks like USBVISION video device
1719  *
1720  */
1721 static int __devinit usbvision_probe(struct usb_interface *intf,
1722                                      const struct usb_device_id *devid)
1723 {
1724         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1725         struct usb_interface *uif;
1726         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1727         const struct usb_host_interface *interface;
1728         struct usb_usbvision *usbvision = NULL;
1729         const struct usb_endpoint_descriptor *endpoint;
1730         int model,i;
1731
1732         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1733                                 dev->descriptor.idVendor,
1734                                 dev->descriptor.idProduct, ifnum);
1735
1736         model = devid->driver_info;
1737         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1738                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1739                 return -ENODEV;
1740         }
1741         printk(KERN_INFO "%s: %s found\n", __func__,
1742                                 usbvision_device_data[model].ModelString);
1743
1744         if (usbvision_device_data[model].Interface >= 0) {
1745                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1746         } else {
1747                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1748         }
1749         endpoint = &interface->endpoint[1].desc;
1750         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1751             USB_ENDPOINT_XFER_ISOC) {
1752                 err("%s: interface %d. has non-ISO endpoint!",
1753                     __func__, ifnum);
1754                 err("%s: Endpoint attributes %d",
1755                     __func__, endpoint->bmAttributes);
1756                 return -ENODEV;
1757         }
1758         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1759             USB_DIR_OUT) {
1760                 err("%s: interface %d. has ISO OUT endpoint!",
1761                     __func__, ifnum);
1762                 return -ENODEV;
1763         }
1764
1765         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1766                 err("%s: couldn't allocate USBVision struct", __func__);
1767                 return -ENOMEM;
1768         }
1769
1770         if (dev->descriptor.bNumConfigurations > 1) {
1771                 usbvision->bridgeType = BRIDGE_NT1004;
1772         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1773                 usbvision->bridgeType = BRIDGE_NT1005;
1774         } else {
1775                 usbvision->bridgeType = BRIDGE_NT1003;
1776         }
1777         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1778
1779         mutex_lock(&usbvision->lock);
1780
1781         /* compute alternate max packet sizes */
1782         uif = dev->actconfig->interface[0];
1783
1784         usbvision->num_alt=uif->num_altsetting;
1785         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1786         usbvision->alt_max_pkt_size = kmalloc(32*
1787                                               usbvision->num_alt,GFP_KERNEL);
1788         if (usbvision->alt_max_pkt_size == NULL) {
1789                 err("usbvision: out of memory!\n");
1790                 mutex_unlock(&usbvision->lock);
1791                 return -ENOMEM;
1792         }
1793
1794         for (i = 0; i < usbvision->num_alt ; i++) {
1795                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1796                                       wMaxPacketSize);
1797                 usbvision->alt_max_pkt_size[i] =
1798                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1799                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1800                        usbvision->alt_max_pkt_size[i]);
1801         }
1802
1803
1804         usbvision->nr = usbvision_nr++;
1805
1806         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1807         if (usbvision->have_tuner) {
1808                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1809         }
1810
1811         usbvision->tuner_addr = ADDR_UNSET;
1812
1813         usbvision->DevModel = model;
1814         usbvision->remove_pending = 0;
1815         usbvision->iface = ifnum;
1816         usbvision->ifaceAlt = 0;
1817         usbvision->video_endp = endpoint->bEndpointAddress;
1818         usbvision->isocPacketSize = 0;
1819         usbvision->usb_bandwidth = 0;
1820         usbvision->user = 0;
1821         usbvision->streaming = Stream_Off;
1822         usbvision_register_video(usbvision);
1823         usbvision_configure_video(usbvision);
1824         mutex_unlock(&usbvision->lock);
1825
1826
1827         usb_set_intfdata (intf, usbvision);
1828         usbvision_create_sysfs(usbvision->vdev);
1829
1830         PDEBUG(DBG_PROBE, "success");
1831         return 0;
1832 }
1833
1834
1835 /*
1836  * usbvision_disconnect()
1837  *
1838  * This procedure stops all driver activity, deallocates interface-private
1839  * structure (pointed by 'ptr') and after that driver should be removable
1840  * with no ill consequences.
1841  *
1842  */
1843 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1844 {
1845         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1846
1847         PDEBUG(DBG_PROBE, "");
1848
1849         if (usbvision == NULL) {
1850                 err("%s: usb_get_intfdata() failed", __func__);
1851                 return;
1852         }
1853         usb_set_intfdata (intf, NULL);
1854
1855         mutex_lock(&usbvision->lock);
1856
1857         // At this time we ask to cancel outstanding URBs
1858         usbvision_stop_isoc(usbvision);
1859
1860         if (usbvision->power) {
1861                 usbvision_i2c_unregister(usbvision);
1862                 usbvision_power_off(usbvision);
1863         }
1864         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1865
1866         usb_put_dev(usbvision->dev);
1867         usbvision->dev = NULL;  // USB device is no more
1868
1869         mutex_unlock(&usbvision->lock);
1870
1871         if (usbvision->user) {
1872                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1873                        __func__);
1874                 wake_up_interruptible(&usbvision->wait_frame);
1875                 wake_up_interruptible(&usbvision->wait_stream);
1876         } else {
1877                 usbvision_release(usbvision);
1878         }
1879
1880         PDEBUG(DBG_PROBE, "success");
1881 }
1882
1883 static struct usb_driver usbvision_driver = {
1884         .name           = "usbvision",
1885         .id_table       = usbvision_table,
1886         .probe          = usbvision_probe,
1887         .disconnect     = usbvision_disconnect
1888 };
1889
1890 /*
1891  * usbvision_init()
1892  *
1893  * This code is run to initialize the driver.
1894  *
1895  */
1896 static int __init usbvision_init(void)
1897 {
1898         int errCode;
1899
1900         PDEBUG(DBG_PROBE, "");
1901
1902         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1903         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1904         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1905
1906         /* disable planar mode support unless compression enabled */
1907         if (isocMode != ISOC_MODE_COMPRESS ) {
1908                 // FIXME : not the right way to set supported flag
1909                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1910                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1911         }
1912
1913         errCode = usb_register(&usbvision_driver);
1914
1915         if (errCode == 0) {
1916                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1917                 PDEBUG(DBG_PROBE, "success");
1918         }
1919         return errCode;
1920 }
1921
1922 static void __exit usbvision_exit(void)
1923 {
1924  PDEBUG(DBG_PROBE, "");
1925
1926  usb_deregister(&usbvision_driver);
1927  PDEBUG(DBG_PROBE, "success");
1928 }
1929
1930 module_init(usbvision_init);
1931 module_exit(usbvision_exit);
1932
1933 /*
1934  * Overrides for Emacs so that we follow Linus's tabbing style.
1935  * ---------------------------------------------------------------------------
1936  * Local variables:
1937  * c-basic-offset: 8
1938  * End:
1939  */