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   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/vmalloc.h>
  57 #include <linux/module.h>
  58 #include <linux/init.h>
  59 #include <linux/spinlock.h>
  60 #include <asm/io.h>
  61 #include <linux/videodev2.h>
  62 #include <linux/video_decoder.h>
  63 #include <linux/i2c.h>
  64
  65 #include <media/saa7115.h>
  66 #include <media/v4l2-common.h>
  67 #include <media/v4l2-ioctl.h>
  68 #include <media/tuner.h>
  69
  70 #include <linux/workqueue.h>
  71
  72 #include "usbvision.h"
  73 #include "usbvision-cards.h"
  74
  75 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  76  Dwaine Garden <DwaineGarden@rogers.com>"
  77 #define DRIVER_NAME "usbvision"
  78 #define DRIVER_ALIAS "USBVision"
  79 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  80 #define DRIVER_LICENSE "GPL"
  81 #define USBVISION_DRIVER_VERSION_MAJOR 0
  82 #define USBVISION_DRIVER_VERSION_MINOR 9
  83 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  84 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  85 USBVISION_DRIVER_VERSION_MINOR,\
  86 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  87 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  88  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  89  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  90
  91 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  92
  93
  94 #ifdef USBVISION_DEBUG
  95         #define PDEBUG(level, fmt, args...) { \
  96                 if (video_debug & (level)) \
  97                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  98                                 __func__, __LINE__ , ## args); \
  99         }
 100 #else
 101         #define PDEBUG(level, fmt, args...) do {} while(0)
 102 #endif
 103
 104 #define DBG_IO          1<<1
 105 #define DBG_PROBE       1<<2
 106 #define DBG_MMAP        1<<3
 107
 108 //String operations
 109 #define rmspace(str)    while(*str==' ') str++;
 110 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 111
 112
 113 /* sequential number of usbvision device */
 114 static int usbvision_nr;
 115
 116 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 117         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 118         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 119         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 120         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 121         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 122         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 123         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 124         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 125 };
 126
 127 /* Function prototypes */
 128 static void usbvision_release(struct usb_usbvision *usbvision);
 129
 130 /* Default initialization of device driver parameters */
 131 /* Set the default format for ISOC endpoint */
 132 static int isocMode = ISOC_MODE_COMPRESS;
 133 /* Set the default Debug Mode of the device driver */
 134 static int video_debug;
 135 /* Set the default device to power on at startup */
 136 static int PowerOnAtOpen = 1;
 137 /* Sequential Number of Video Device */
 138 static int video_nr = -1;
 139 /* Sequential Number of Radio Device */
 140 static int radio_nr = -1;
 141 /* Sequential Number of VBI Device */
 142 static int vbi_nr = -1;
 143
 144 /* Grab parameters for the device driver */
 145
 146 /* Showing parameters under SYSFS */
 147 module_param(isocMode, int, 0444);
 148 module_param(video_debug, int, 0444);
 149 module_param(PowerOnAtOpen, int, 0444);
 150 module_param(video_nr, int, 0444);
 151 module_param(radio_nr, int, 0444);
 152 module_param(vbi_nr, int, 0444);
 153
 154 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 155 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 156 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 157 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 158 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 159 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 160
 161
 162 // Misc stuff
 163 MODULE_AUTHOR(DRIVER_AUTHOR);
 164 MODULE_DESCRIPTION(DRIVER_DESC);
 165 MODULE_LICENSE(DRIVER_LICENSE);
 166 MODULE_VERSION(USBVISION_VERSION_STRING);
 167 MODULE_ALIAS(DRIVER_ALIAS);
 168
 169
 170 /*****************************************************************************/
 171 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 172 /* Device information is located at /sys/class/video4linux/video0            */
 173 /* Device parameters information is located at /sys/module/usbvision         */
 174 /* Device USB Information is located at                                      */
 175 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 176 /*****************************************************************************/
 177
 178 #define YES_NO(x) ((x) ? "Yes" : "No")
 179
 180 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 181 {
 182         struct video_device *vdev =
 183                 container_of(cd, struct video_device, dev);
 184         return video_get_drvdata(vdev);
 185 }
 186
 187 static ssize_t show_version(struct device *cd,
 188                             struct device_attribute *attr, char *buf)
 189 {
 190         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 191 }
 192 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 193
 194 static ssize_t show_model(struct device *cd,
 195                           struct device_attribute *attr, char *buf)
 196 {
 197         struct video_device *vdev =
 198                 container_of(cd, struct video_device, dev);
 199         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 200         return sprintf(buf, "%s\n",
 201                        usbvision_device_data[usbvision->DevModel].ModelString);
 202 }
 203 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 204
 205 static ssize_t show_hue(struct device *cd,
 206                         struct device_attribute *attr, char *buf)
 207 {
 208         struct video_device *vdev =
 209                 container_of(cd, struct video_device, dev);
 210         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 211         struct v4l2_control ctrl;
 212         ctrl.id = V4L2_CID_HUE;
 213         ctrl.value = 0;
 214         if(usbvision->user)
 215                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 216         return sprintf(buf, "%d\n", ctrl.value);
 217 }
 218 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 219
 220 static ssize_t show_contrast(struct device *cd,
 221                              struct device_attribute *attr, char *buf)
 222 {
 223         struct video_device *vdev =
 224                 container_of(cd, struct video_device, dev);
 225         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 226         struct v4l2_control ctrl;
 227         ctrl.id = V4L2_CID_CONTRAST;
 228         ctrl.value = 0;
 229         if(usbvision->user)
 230                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 231         return sprintf(buf, "%d\n", ctrl.value);
 232 }
 233 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 234
 235 static ssize_t show_brightness(struct device *cd,
 236                                struct device_attribute *attr, char *buf)
 237 {
 238         struct video_device *vdev =
 239                 container_of(cd, struct video_device, dev);
 240         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 241         struct v4l2_control ctrl;
 242         ctrl.id = V4L2_CID_BRIGHTNESS;
 243         ctrl.value = 0;
 244         if(usbvision->user)
 245                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 246         return sprintf(buf, "%d\n", ctrl.value);
 247 }
 248 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 249
 250 static ssize_t show_saturation(struct device *cd,
 251                                struct device_attribute *attr, char *buf)
 252 {
 253         struct video_device *vdev =
 254                 container_of(cd, struct video_device, dev);
 255         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 256         struct v4l2_control ctrl;
 257         ctrl.id = V4L2_CID_SATURATION;
 258         ctrl.value = 0;
 259         if(usbvision->user)
 260                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 261         return sprintf(buf, "%d\n", ctrl.value);
 262 }
 263 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 264
 265 static ssize_t show_streaming(struct device *cd,
 266                               struct device_attribute *attr, char *buf)
 267 {
 268         struct video_device *vdev =
 269                 container_of(cd, struct video_device, dev);
 270         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 271         return sprintf(buf, "%s\n",
 272                        YES_NO(usbvision->streaming==Stream_On?1:0));
 273 }
 274 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 275
 276 static ssize_t show_compression(struct device *cd,
 277                                 struct device_attribute *attr, char *buf)
 278 {
 279         struct video_device *vdev =
 280                 container_of(cd, struct video_device, dev);
 281         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 282         return sprintf(buf, "%s\n",
 283                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 284 }
 285 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 286
 287 static ssize_t show_device_bridge(struct device *cd,
 288                                   struct device_attribute *attr, char *buf)
 289 {
 290         struct video_device *vdev =
 291                 container_of(cd, struct video_device, dev);
 292         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 293         return sprintf(buf, "%d\n", usbvision->bridgeType);
 294 }
 295 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 296
 297 static void usbvision_create_sysfs(struct video_device *vdev)
 298 {
 299         int res;
 300         if (!vdev)
 301                 return;
 302         do {
 303                 res = device_create_file(&vdev->dev, &dev_attr_version);
 304                 if (res<0)
 305                         break;
 306                 res = device_create_file(&vdev->dev, &dev_attr_model);
 307                 if (res<0)
 308                         break;
 309                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 310                 if (res<0)
 311                         break;
 312                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 313                 if (res<0)
 314                         break;
 315                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 316                 if (res<0)
 317                         break;
 318                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 319                 if (res<0)
 320                         break;
 321                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 322                 if (res<0)
 323                         break;
 324                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 325                 if (res<0)
 326                         break;
 327                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 328                 if (res>=0)
 329                         return;
 330         } while (0);
 331
 332         err("%s error: %d\n", __func__, res);
 333 }
 334
 335 static void usbvision_remove_sysfs(struct video_device *vdev)
 336 {
 337         if (vdev) {
 338                 device_remove_file(&vdev->dev, &dev_attr_version);
 339                 device_remove_file(&vdev->dev, &dev_attr_model);
 340                 device_remove_file(&vdev->dev, &dev_attr_hue);
 341                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 342                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 343                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 344                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 345                 device_remove_file(&vdev->dev, &dev_attr_compression);
 346                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 347         }
 348 }
 349
 350 /*
 351  * usbvision_open()
 352  *
 353  * This is part of Video 4 Linux API. The driver can be opened by one
 354  * client only (checks internal counter 'usbvision->user'). The procedure
 355  * then allocates buffers needed for video processing.
 356  *
 357  */
 358 static int usbvision_v4l2_open(struct file *file)
 359 {
 360         struct usb_usbvision *usbvision = video_drvdata(file);
 361         int errCode = 0;
 362
 363         PDEBUG(DBG_IO, "open");
 364
 365         lock_kernel();
 366         usbvision_reset_powerOffTimer(usbvision);
 367
 368         if (usbvision->user)
 369                 errCode = -EBUSY;
 370         else {
 371                 /* Allocate memory for the scratch ring buffer */
 372                 errCode = usbvision_scratch_alloc(usbvision);
 373                 if (isocMode==ISOC_MODE_COMPRESS) {
 374                         /* Allocate intermediate decompression buffers
 375                            only if needed */
 376                         errCode = usbvision_decompress_alloc(usbvision);
 377                 }
 378                 if (errCode) {
 379                         /* Deallocate all buffers if trouble */
 380                         usbvision_scratch_free(usbvision);
 381                         usbvision_decompress_free(usbvision);
 382                 }
 383         }
 384
 385         /* If so far no errors then we shall start the camera */
 386         if (!errCode) {
 387                 mutex_lock(&usbvision->lock);
 388                 if (usbvision->power == 0) {
 389                         usbvision_power_on(usbvision);
 390                         usbvision_i2c_register(usbvision);
 391                 }
 392
 393                 /* Send init sequence only once, it's large! */
 394                 if (!usbvision->initialized) {
 395                         int setup_ok = 0;
 396                         setup_ok = usbvision_setup(usbvision,isocMode);
 397                         if (setup_ok)
 398                                 usbvision->initialized = 1;
 399                         else
 400                                 errCode = -EBUSY;
 401                 }
 402
 403                 if (!errCode) {
 404                         usbvision_begin_streaming(usbvision);
 405                         errCode = usbvision_init_isoc(usbvision);
 406                         /* device must be initialized before isoc transfer */
 407                         usbvision_muxsel(usbvision,0);
 408                         usbvision->user++;
 409                 } else {
 410                         if (PowerOnAtOpen) {
 411                                 usbvision_i2c_unregister(usbvision);
 412                                 usbvision_power_off(usbvision);
 413                                 usbvision->initialized = 0;
 414                         }
 415                 }
 416                 mutex_unlock(&usbvision->lock);
 417         }
 418
 419         /* prepare queues */
 420         usbvision_empty_framequeues(usbvision);
 421
 422         PDEBUG(DBG_IO, "success");
 423         unlock_kernel();
 424         return errCode;
 425 }
 426
 427 /*
 428  * usbvision_v4l2_close()
 429  *
 430  * This is part of Video 4 Linux API. The procedure
 431  * stops streaming and deallocates all buffers that were earlier
 432  * allocated in usbvision_v4l2_open().
 433  *
 434  */
 435 static int usbvision_v4l2_close(struct file *file)
 436 {
 437         struct usb_usbvision *usbvision = video_drvdata(file);
 438
 439         PDEBUG(DBG_IO, "close");
 440         mutex_lock(&usbvision->lock);
 441
 442         usbvision_audio_off(usbvision);
 443         usbvision_restart_isoc(usbvision);
 444         usbvision_stop_isoc(usbvision);
 445
 446         usbvision_decompress_free(usbvision);
 447         usbvision_frames_free(usbvision);
 448         usbvision_empty_framequeues(usbvision);
 449         usbvision_scratch_free(usbvision);
 450
 451         usbvision->user--;
 452
 453         if (PowerOnAtOpen) {
 454                 /* power off in a little while
 455                    to avoid off/on every close/open short sequences */
 456                 usbvision_set_powerOffTimer(usbvision);
 457                 usbvision->initialized = 0;
 458         }
 459
 460         mutex_unlock(&usbvision->lock);
 461
 462         if (usbvision->remove_pending) {
 463                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 464                 usbvision_release(usbvision);
 465         }
 466
 467         PDEBUG(DBG_IO, "success");
 468         return 0;
 469 }
 470
 471
 472 /*
 473  * usbvision_ioctl()
 474  *
 475  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 476  *
 477  */
 478 #ifdef CONFIG_VIDEO_ADV_DEBUG
 479 static int vidioc_g_register (struct file *file, void *priv,
 480                                 struct v4l2_register *reg)
 481 {
 482         struct usb_usbvision *usbvision = video_drvdata(file);
 483         int errCode;
 484
 485         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 486                 return -EINVAL;
 487         /* NT100x has a 8-bit register space */
 488         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 489         if (errCode < 0) {
 490                 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
 491                     __func__, errCode);
 492                 return errCode;
 493         }
 494         reg->val = errCode;
 495         return 0;
 496 }
 497
 498 static int vidioc_s_register (struct file *file, void *priv,
 499                                 struct v4l2_register *reg)
 500 {
 501         struct usb_usbvision *usbvision = video_drvdata(file);
 502         int errCode;
 503
 504         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 505                 return -EINVAL;
 506         /* NT100x has a 8-bit register space */
 507         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 508         if (errCode < 0) {
 509                 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
 510                     __func__, errCode);
 511                 return errCode;
 512         }
 513         return 0;
 514 }
 515 #endif
 516
 517 static int vidioc_querycap (struct file *file, void  *priv,
 518                                         struct v4l2_capability *vc)
 519 {
 520         struct usb_usbvision *usbvision = video_drvdata(file);
 521
 522         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 523         strlcpy(vc->card,
 524                 usbvision_device_data[usbvision->DevModel].ModelString,
 525                 sizeof(vc->card));
 526         strlcpy(vc->bus_info, dev_name(&usbvision->dev->dev),
 527                 sizeof(vc->bus_info));
 528         vc->version = USBVISION_DRIVER_VERSION;
 529         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 530                 V4L2_CAP_AUDIO |
 531                 V4L2_CAP_READWRITE |
 532                 V4L2_CAP_STREAMING |
 533                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 534         return 0;
 535 }
 536
 537 static int vidioc_enum_input (struct file *file, void *priv,
 538                                 struct v4l2_input *vi)
 539 {
 540         struct usb_usbvision *usbvision = video_drvdata(file);
 541         int chan;
 542
 543         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 544                 return -EINVAL;
 545         if (usbvision->have_tuner) {
 546                 chan = vi->index;
 547         } else {
 548                 chan = vi->index + 1; /*skip Television string*/
 549         }
 550         /* Determine the requested input characteristics
 551            specific for each usbvision card model */
 552         switch(chan) {
 553         case 0:
 554                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 555                         strcpy(vi->name, "White Video Input");
 556                 } else {
 557                         strcpy(vi->name, "Television");
 558                         vi->type = V4L2_INPUT_TYPE_TUNER;
 559                         vi->audioset = 1;
 560                         vi->tuner = chan;
 561                         vi->std = USBVISION_NORMS;
 562                 }
 563                 break;
 564         case 1:
 565                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 566                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 567                         strcpy(vi->name, "Green Video Input");
 568                 } else {
 569                         strcpy(vi->name, "Composite Video Input");
 570                 }
 571                 vi->std = V4L2_STD_PAL;
 572                 break;
 573         case 2:
 574                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 575                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 576                         strcpy(vi->name, "Yellow Video Input");
 577                 } else {
 578                         strcpy(vi->name, "S-Video Input");
 579                 }
 580                 vi->std = V4L2_STD_PAL;
 581                 break;
 582         case 3:
 583                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 584                 strcpy(vi->name, "Red Video Input");
 585                 vi->std = V4L2_STD_PAL;
 586                 break;
 587         }
 588         return 0;
 589 }
 590
 591 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 592 {
 593         struct usb_usbvision *usbvision = video_drvdata(file);
 594
 595         *input = usbvision->ctl_input;
 596         return 0;
 597 }
 598
 599 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 600 {
 601         struct usb_usbvision *usbvision = video_drvdata(file);
 602
 603         if ((input >= usbvision->video_inputs) || (input < 0) )
 604                 return -EINVAL;
 605
 606         mutex_lock(&usbvision->lock);
 607         usbvision_muxsel(usbvision, input);
 608         usbvision_set_input(usbvision);
 609         usbvision_set_output(usbvision,
 610                              usbvision->curwidth,
 611                              usbvision->curheight);
 612         mutex_unlock(&usbvision->lock);
 613         return 0;
 614 }
 615
 616 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 617 {
 618         struct usb_usbvision *usbvision = video_drvdata(file);
 619
 620         usbvision->tvnormId=*id;
 621
 622         mutex_lock(&usbvision->lock);
 623         call_i2c_clients(usbvision, VIDIOC_S_STD,
 624                          &usbvision->tvnormId);
 625         mutex_unlock(&usbvision->lock);
 626         /* propagate the change to the decoder */
 627         usbvision_muxsel(usbvision, usbvision->ctl_input);
 628
 629         return 0;
 630 }
 631
 632 static int vidioc_g_tuner (struct file *file, void *priv,
 633                                 struct v4l2_tuner *vt)
 634 {
 635         struct usb_usbvision *usbvision = video_drvdata(file);
 636
 637         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 638                 return -EINVAL;
 639         if(usbvision->radio) {
 640                 strcpy(vt->name, "Radio");
 641                 vt->type = V4L2_TUNER_RADIO;
 642         } else {
 643                 strcpy(vt->name, "Television");
 644         }
 645         /* Let clients fill in the remainder of this struct */
 646         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 647
 648         return 0;
 649 }
 650
 651 static int vidioc_s_tuner (struct file *file, void *priv,
 652                                 struct v4l2_tuner *vt)
 653 {
 654         struct usb_usbvision *usbvision = video_drvdata(file);
 655
 656         // Only no or one tuner for now
 657         if (!usbvision->have_tuner || vt->index)
 658                 return -EINVAL;
 659         /* let clients handle this */
 660         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 661
 662         return 0;
 663 }
 664
 665 static int vidioc_g_frequency (struct file *file, void *priv,
 666                                 struct v4l2_frequency *freq)
 667 {
 668         struct usb_usbvision *usbvision = video_drvdata(file);
 669
 670         freq->tuner = 0; // Only one tuner
 671         if(usbvision->radio) {
 672                 freq->type = V4L2_TUNER_RADIO;
 673         } else {
 674                 freq->type = V4L2_TUNER_ANALOG_TV;
 675         }
 676         freq->frequency = usbvision->freq;
 677
 678         return 0;
 679 }
 680
 681 static int vidioc_s_frequency (struct file *file, void *priv,
 682                                 struct v4l2_frequency *freq)
 683 {
 684         struct usb_usbvision *usbvision = video_drvdata(file);
 685
 686         // Only no or one tuner for now
 687         if (!usbvision->have_tuner || freq->tuner)
 688                 return -EINVAL;
 689
 690         usbvision->freq = freq->frequency;
 691         call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
 692
 693         return 0;
 694 }
 695
 696 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 697 {
 698         struct usb_usbvision *usbvision = video_drvdata(file);
 699
 700         memset(a,0,sizeof(*a));
 701         if(usbvision->radio) {
 702                 strcpy(a->name,"Radio");
 703         } else {
 704                 strcpy(a->name, "TV");
 705         }
 706
 707         return 0;
 708 }
 709
 710 static int vidioc_s_audio (struct file *file, void *fh,
 711                           struct v4l2_audio *a)
 712 {
 713         if(a->index) {
 714                 return -EINVAL;
 715         }
 716
 717         return 0;
 718 }
 719
 720 static int vidioc_queryctrl (struct file *file, void *priv,
 721                             struct v4l2_queryctrl *ctrl)
 722 {
 723         struct usb_usbvision *usbvision = video_drvdata(file);
 724         int id=ctrl->id;
 725
 726         memset(ctrl,0,sizeof(*ctrl));
 727         ctrl->id=id;
 728
 729         call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
 730
 731         if (!ctrl->type)
 732                 return -EINVAL;
 733
 734         return 0;
 735 }
 736
 737 static int vidioc_g_ctrl (struct file *file, void *priv,
 738                                 struct v4l2_control *ctrl)
 739 {
 740         struct usb_usbvision *usbvision = video_drvdata(file);
 741         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 742
 743         return 0;
 744 }
 745
 746 static int vidioc_s_ctrl (struct file *file, void *priv,
 747                                 struct v4l2_control *ctrl)
 748 {
 749         struct usb_usbvision *usbvision = video_drvdata(file);
 750         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 751
 752         return 0;
 753 }
 754
 755 static int vidioc_reqbufs (struct file *file,
 756                            void *priv, struct v4l2_requestbuffers *vr)
 757 {
 758         struct usb_usbvision *usbvision = video_drvdata(file);
 759         int ret;
 760
 761         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 762
 763         /* Check input validity:
 764            the user must do a VIDEO CAPTURE and MMAP method. */
 765         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 766            (vr->memory != V4L2_MEMORY_MMAP))
 767                 return -EINVAL;
 768
 769         if(usbvision->streaming == Stream_On) {
 770                 if ((ret = usbvision_stream_interrupt(usbvision)))
 771                         return ret;
 772         }
 773
 774         usbvision_frames_free(usbvision);
 775         usbvision_empty_framequeues(usbvision);
 776         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 777
 778         usbvision->curFrame = NULL;
 779
 780         return 0;
 781 }
 782
 783 static int vidioc_querybuf (struct file *file,
 784                             void *priv, struct v4l2_buffer *vb)
 785 {
 786         struct usb_usbvision *usbvision = video_drvdata(file);
 787         struct usbvision_frame *frame;
 788
 789         /* FIXME : must control
 790            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 791         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 792                 return -EINVAL;
 793         }
 794         if(vb->index>=usbvision->num_frames)  {
 795                 return -EINVAL;
 796         }
 797         /* Updating the corresponding frame state */
 798         vb->flags = 0;
 799         frame = &usbvision->frame[vb->index];
 800         if(frame->grabstate >= FrameState_Ready)
 801                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 802         if(frame->grabstate >= FrameState_Done)
 803                 vb->flags |= V4L2_BUF_FLAG_DONE;
 804         if(frame->grabstate == FrameState_Unused)
 805                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 806         vb->memory = V4L2_MEMORY_MMAP;
 807
 808         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 809
 810         vb->memory = V4L2_MEMORY_MMAP;
 811         vb->field = V4L2_FIELD_NONE;
 812         vb->length = usbvision->curwidth*
 813                 usbvision->curheight*
 814                 usbvision->palette.bytes_per_pixel;
 815         vb->timestamp = usbvision->frame[vb->index].timestamp;
 816         vb->sequence = usbvision->frame[vb->index].sequence;
 817         return 0;
 818 }
 819
 820 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 821 {
 822         struct usb_usbvision *usbvision = video_drvdata(file);
 823         struct usbvision_frame *frame;
 824         unsigned long lock_flags;
 825
 826         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 827         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 828                 return -EINVAL;
 829         }
 830         if(vb->index>=usbvision->num_frames)  {
 831                 return -EINVAL;
 832         }
 833
 834         frame = &usbvision->frame[vb->index];
 835
 836         if (frame->grabstate != FrameState_Unused) {
 837                 return -EAGAIN;
 838         }
 839
 840         /* Mark it as ready and enqueue frame */
 841         frame->grabstate = FrameState_Ready;
 842         frame->scanstate = ScanState_Scanning;
 843         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 844
 845         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 846
 847         /* set v4l2_format index */
 848         frame->v4l2_format = usbvision->palette;
 849
 850         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 851         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 852         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 853
 854         return 0;
 855 }
 856
 857 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 858 {
 859         struct usb_usbvision *usbvision = video_drvdata(file);
 860         int ret;
 861         struct usbvision_frame *f;
 862         unsigned long lock_flags;
 863
 864         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 865                 return -EINVAL;
 866
 867         if (list_empty(&(usbvision->outqueue))) {
 868                 if (usbvision->streaming == Stream_Idle)
 869                         return -EINVAL;
 870                 ret = wait_event_interruptible
 871                         (usbvision->wait_frame,
 872                          !list_empty(&(usbvision->outqueue)));
 873                 if (ret)
 874                         return ret;
 875         }
 876
 877         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 878         f = list_entry(usbvision->outqueue.next,
 879                        struct usbvision_frame, frame);
 880         list_del(usbvision->outqueue.next);
 881         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 882
 883         f->grabstate = FrameState_Unused;
 884
 885         vb->memory = V4L2_MEMORY_MMAP;
 886         vb->flags = V4L2_BUF_FLAG_MAPPED |
 887                 V4L2_BUF_FLAG_QUEUED |
 888                 V4L2_BUF_FLAG_DONE;
 889         vb->index = f->index;
 890         vb->sequence = f->sequence;
 891         vb->timestamp = f->timestamp;
 892         vb->field = V4L2_FIELD_NONE;
 893         vb->bytesused = f->scanlength;
 894
 895         return 0;
 896 }
 897
 898 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 899 {
 900         struct usb_usbvision *usbvision = video_drvdata(file);
 901         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 902
 903         usbvision->streaming = Stream_On;
 904         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 905
 906         return 0;
 907 }
 908
 909 static int vidioc_streamoff(struct file *file,
 910                             void *priv, enum v4l2_buf_type type)
 911 {
 912         struct usb_usbvision *usbvision = video_drvdata(file);
 913         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 914
 915         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 916                 return -EINVAL;
 917
 918         if(usbvision->streaming == Stream_On) {
 919                 usbvision_stream_interrupt(usbvision);
 920                 /* Stop all video streamings */
 921                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 922         }
 923         usbvision_empty_framequeues(usbvision);
 924
 925         return 0;
 926 }
 927
 928 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 929                                         struct v4l2_fmtdesc *vfd)
 930 {
 931         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 932                 return -EINVAL;
 933         }
 934         vfd->flags = 0;
 935         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 936         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 937         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 938         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 939         return 0;
 940 }
 941
 942 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 943                                         struct v4l2_format *vf)
 944 {
 945         struct usb_usbvision *usbvision = video_drvdata(file);
 946         vf->fmt.pix.width = usbvision->curwidth;
 947         vf->fmt.pix.height = usbvision->curheight;
 948         vf->fmt.pix.pixelformat = usbvision->palette.format;
 949         vf->fmt.pix.bytesperline =
 950                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 951         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 952         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 953         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 954
 955         return 0;
 956 }
 957
 958 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
 959                                struct v4l2_format *vf)
 960 {
 961         struct usb_usbvision *usbvision = video_drvdata(file);
 962         int formatIdx;
 963
 964         /* Find requested format in available ones */
 965         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
 966                 if(vf->fmt.pix.pixelformat ==
 967                    usbvision_v4l2_format[formatIdx].format) {
 968                         usbvision->palette = usbvision_v4l2_format[formatIdx];
 969                         break;
 970                 }
 971         }
 972         /* robustness */
 973         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
 974                 return -EINVAL;
 975         }
 976         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 977         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 978
 979         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 980                 usbvision->palette.bytes_per_pixel;
 981         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 982
 983         return 0;
 984 }
 985
 986 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 987                                struct v4l2_format *vf)
 988 {
 989         struct usb_usbvision *usbvision = video_drvdata(file);
 990         int ret;
 991
 992         if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
 993                 return ret;
 994         }
 995
 996         /* stop io in case it is already in progress */
 997         if(usbvision->streaming == Stream_On) {
 998                 if ((ret = usbvision_stream_interrupt(usbvision)))
 999                         return ret;
1000         }
1001         usbvision_frames_free(usbvision);
1002         usbvision_empty_framequeues(usbvision);
1003
1004         usbvision->curFrame = NULL;
1005
1006         /* by now we are committed to the new data... */
1007         mutex_lock(&usbvision->lock);
1008         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1009         mutex_unlock(&usbvision->lock);
1010
1011         return 0;
1012 }
1013
1014 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1015                       size_t count, loff_t *ppos)
1016 {
1017         struct usb_usbvision *usbvision = video_drvdata(file);
1018         int noblock = file->f_flags & O_NONBLOCK;
1019         unsigned long lock_flags;
1020
1021         int ret,i;
1022         struct usbvision_frame *frame;
1023
1024         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1025                (unsigned long)count, noblock);
1026
1027         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1028                 return -EFAULT;
1029
1030         /* This entry point is compatible with the mmap routines
1031            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1032            to get frames or call read on the device. */
1033         if(!usbvision->num_frames) {
1034                 /* First, allocate some frames to work with
1035                    if this has not been done with VIDIOC_REQBUF */
1036                 usbvision_frames_free(usbvision);
1037                 usbvision_empty_framequeues(usbvision);
1038                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1039         }
1040
1041         if(usbvision->streaming != Stream_On) {
1042                 /* no stream is running, make it running ! */
1043                 usbvision->streaming = Stream_On;
1044                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1045         }
1046
1047         /* Then, enqueue as many frames as possible
1048            (like a user of VIDIOC_QBUF would do) */
1049         for(i=0;i<usbvision->num_frames;i++) {
1050                 frame = &usbvision->frame[i];
1051                 if(frame->grabstate == FrameState_Unused) {
1052                         /* Mark it as ready and enqueue frame */
1053                         frame->grabstate = FrameState_Ready;
1054                         frame->scanstate = ScanState_Scanning;
1055                         /* Accumulated in usbvision_parse_data() */
1056                         frame->scanlength = 0;
1057
1058                         /* set v4l2_format index */
1059                         frame->v4l2_format = usbvision->palette;
1060
1061                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1062                         list_add_tail(&frame->frame, &usbvision->inqueue);
1063                         spin_unlock_irqrestore(&usbvision->queue_lock,
1064                                                lock_flags);
1065                 }
1066         }
1067
1068         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1069         if (list_empty(&(usbvision->outqueue))) {
1070                 if(noblock)
1071                         return -EAGAIN;
1072
1073                 ret = wait_event_interruptible
1074                         (usbvision->wait_frame,
1075                          !list_empty(&(usbvision->outqueue)));
1076                 if (ret)
1077                         return ret;
1078         }
1079
1080         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1081         frame = list_entry(usbvision->outqueue.next,
1082                            struct usbvision_frame, frame);
1083         list_del(usbvision->outqueue.next);
1084         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1085
1086         /* An error returns an empty frame */
1087         if (frame->grabstate == FrameState_Error) {
1088                 frame->bytes_read = 0;
1089                 return 0;
1090         }
1091
1092         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1093                __func__,
1094                frame->index, frame->bytes_read, frame->scanlength);
1095
1096         /* copy bytes to user space; we allow for partials reads */
1097         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1098                 count = frame->scanlength - frame->bytes_read;
1099
1100         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1101                 return -EFAULT;
1102         }
1103
1104         frame->bytes_read += count;
1105         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1106                __func__,
1107                (unsigned long)count, frame->bytes_read);
1108
1109         /* For now, forget the frame if it has not been read in one shot. */
1110 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1111                 frame->bytes_read = 0;
1112
1113                 /* Mark it as available to be used again. */
1114                 frame->grabstate = FrameState_Unused;
1115 /*      } */
1116
1117         return count;
1118 }
1119
1120 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1121 {
1122         unsigned long size = vma->vm_end - vma->vm_start,
1123                 start = vma->vm_start;
1124         void *pos;
1125         u32 i;
1126         struct usb_usbvision *usbvision = video_drvdata(file);
1127
1128         PDEBUG(DBG_MMAP, "mmap");
1129
1130         mutex_lock(&usbvision->lock);
1131
1132         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1133                 mutex_unlock(&usbvision->lock);
1134                 return -EFAULT;
1135         }
1136
1137         if (!(vma->vm_flags & VM_WRITE) ||
1138             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1139                 mutex_unlock(&usbvision->lock);
1140                 return -EINVAL;
1141         }
1142
1143         for (i = 0; i < usbvision->num_frames; i++) {
1144                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1145                     vma->vm_pgoff)
1146                         break;
1147         }
1148         if (i == usbvision->num_frames) {
1149                 PDEBUG(DBG_MMAP,
1150                        "mmap: user supplied mapping address is out of range");
1151                 mutex_unlock(&usbvision->lock);
1152                 return -EINVAL;
1153         }
1154
1155         /* VM_IO is eventually going to replace PageReserved altogether */
1156         vma->vm_flags |= VM_IO;
1157         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1158
1159         pos = usbvision->frame[i].data;
1160         while (size > 0) {
1161
1162                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1163                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1164                         mutex_unlock(&usbvision->lock);
1165                         return -EAGAIN;
1166                 }
1167                 start += PAGE_SIZE;
1168                 pos += PAGE_SIZE;
1169                 size -= PAGE_SIZE;
1170         }
1171
1172         mutex_unlock(&usbvision->lock);
1173         return 0;
1174 }
1175
1176
1177 /*
1178  * Here comes the stuff for radio on usbvision based devices
1179  *
1180  */
1181 static int usbvision_radio_open(struct file *file)
1182 {
1183         struct usb_usbvision *usbvision = video_drvdata(file);
1184         int errCode = 0;
1185
1186         PDEBUG(DBG_IO, "%s:", __func__);
1187
1188         mutex_lock(&usbvision->lock);
1189
1190         if (usbvision->user) {
1191                 err("%s: Someone tried to open an already opened USBVision Radio!", __func__);
1192                 errCode = -EBUSY;
1193         }
1194         else {
1195                 if(PowerOnAtOpen) {
1196                         usbvision_reset_powerOffTimer(usbvision);
1197                         if (usbvision->power == 0) {
1198                                 usbvision_power_on(usbvision);
1199                                 usbvision_i2c_register(usbvision);
1200                         }
1201                 }
1202
1203                 /* Alternate interface 1 is is the biggest frame size */
1204                 errCode = usbvision_set_alternate(usbvision);
1205                 if (errCode < 0) {
1206                         usbvision->last_error = errCode;
1207                         errCode = -EBUSY;
1208                         goto out;
1209                 }
1210
1211                 // If so far no errors then we shall start the radio
1212                 usbvision->radio = 1;
1213                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1214                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1215                 usbvision->user++;
1216         }
1217
1218         if (errCode) {
1219                 if (PowerOnAtOpen) {
1220                         usbvision_i2c_unregister(usbvision);
1221                         usbvision_power_off(usbvision);
1222                         usbvision->initialized = 0;
1223                 }
1224         }
1225 out:
1226         mutex_unlock(&usbvision->lock);
1227         return errCode;
1228 }
1229
1230
1231 static int usbvision_radio_close(struct file *file)
1232 {
1233         struct usb_usbvision *usbvision = video_drvdata(file);
1234         int errCode = 0;
1235
1236         PDEBUG(DBG_IO, "");
1237
1238         mutex_lock(&usbvision->lock);
1239
1240         /* Set packet size to 0 */
1241         usbvision->ifaceAlt=0;
1242         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1243                                     usbvision->ifaceAlt);
1244
1245         usbvision_audio_off(usbvision);
1246         usbvision->radio=0;
1247         usbvision->user--;
1248
1249         if (PowerOnAtOpen) {
1250                 usbvision_set_powerOffTimer(usbvision);
1251                 usbvision->initialized = 0;
1252         }
1253
1254         mutex_unlock(&usbvision->lock);
1255
1256         if (usbvision->remove_pending) {
1257                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1258                 usbvision_release(usbvision);
1259         }
1260
1261         PDEBUG(DBG_IO, "success");
1262         return errCode;
1263 }
1264
1265 /*
1266  * Here comes the stuff for vbi on usbvision based devices
1267  *
1268  */
1269 static int usbvision_vbi_open(struct file *file)
1270 {
1271         /* TODO */
1272         return -ENODEV;
1273 }
1274
1275 static int usbvision_vbi_close(struct file *file)
1276 {
1277         /* TODO */
1278         return -ENODEV;
1279 }
1280
1281 static int usbvision_do_vbi_ioctl(struct file *file,
1282                                  unsigned int cmd, void *arg)
1283 {
1284         /* TODO */
1285         return -ENOIOCTLCMD;
1286 }
1287
1288 static int usbvision_vbi_ioctl(struct file *file,
1289                        unsigned int cmd, unsigned long arg)
1290 {
1291         return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1292 }
1293
1294
1295 //
1296 // Video registration stuff
1297 //
1298
1299 // Video template
1300 static const struct v4l2_file_operations usbvision_fops = {
1301         .owner             = THIS_MODULE,
1302         .open           = usbvision_v4l2_open,
1303         .release        = usbvision_v4l2_close,
1304         .read           = usbvision_v4l2_read,
1305         .mmap           = usbvision_v4l2_mmap,
1306         .ioctl          = video_ioctl2,
1307 /*      .poll          = video_poll, */
1308 };
1309
1310 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1311         .vidioc_querycap      = vidioc_querycap,
1312         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1313         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1314         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1315         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1316         .vidioc_reqbufs       = vidioc_reqbufs,
1317         .vidioc_querybuf      = vidioc_querybuf,
1318         .vidioc_qbuf          = vidioc_qbuf,
1319         .vidioc_dqbuf         = vidioc_dqbuf,
1320         .vidioc_s_std         = vidioc_s_std,
1321         .vidioc_enum_input    = vidioc_enum_input,
1322         .vidioc_g_input       = vidioc_g_input,
1323         .vidioc_s_input       = vidioc_s_input,
1324         .vidioc_queryctrl     = vidioc_queryctrl,
1325         .vidioc_g_audio       = vidioc_g_audio,
1326         .vidioc_s_audio       = vidioc_s_audio,
1327         .vidioc_g_ctrl        = vidioc_g_ctrl,
1328         .vidioc_s_ctrl        = vidioc_s_ctrl,
1329         .vidioc_streamon      = vidioc_streamon,
1330         .vidioc_streamoff     = vidioc_streamoff,
1331 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1332 /*      .vidiocgmbuf          = vidiocgmbuf, */
1333 #endif
1334         .vidioc_g_tuner       = vidioc_g_tuner,
1335         .vidioc_s_tuner       = vidioc_s_tuner,
1336         .vidioc_g_frequency   = vidioc_g_frequency,
1337         .vidioc_s_frequency   = vidioc_s_frequency,
1338 #ifdef CONFIG_VIDEO_ADV_DEBUG
1339         .vidioc_g_register    = vidioc_g_register,
1340         .vidioc_s_register    = vidioc_s_register,
1341 #endif
1342 };
1343
1344 static struct video_device usbvision_video_template = {
1345         .fops           = &usbvision_fops,
1346         .ioctl_ops      = &usbvision_ioctl_ops,
1347         .name           = "usbvision-video",
1348         .release        = video_device_release,
1349         .minor          = -1,
1350         .tvnorms              = USBVISION_NORMS,
1351         .current_norm         = V4L2_STD_PAL
1352 };
1353
1354
1355 // Radio template
1356 static const struct v4l2_file_operations usbvision_radio_fops = {
1357         .owner             = THIS_MODULE,
1358         .open           = usbvision_radio_open,
1359         .release        = usbvision_radio_close,
1360         .ioctl          = video_ioctl2,
1361 };
1362
1363 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1364         .vidioc_querycap      = vidioc_querycap,
1365         .vidioc_enum_input    = vidioc_enum_input,
1366         .vidioc_g_input       = vidioc_g_input,
1367         .vidioc_s_input       = vidioc_s_input,
1368         .vidioc_queryctrl     = vidioc_queryctrl,
1369         .vidioc_g_audio       = vidioc_g_audio,
1370         .vidioc_s_audio       = vidioc_s_audio,
1371         .vidioc_g_ctrl        = vidioc_g_ctrl,
1372         .vidioc_s_ctrl        = vidioc_s_ctrl,
1373         .vidioc_g_tuner       = vidioc_g_tuner,
1374         .vidioc_s_tuner       = vidioc_s_tuner,
1375         .vidioc_g_frequency   = vidioc_g_frequency,
1376         .vidioc_s_frequency   = vidioc_s_frequency,
1377 };
1378
1379 static struct video_device usbvision_radio_template = {
1380         .fops           = &usbvision_radio_fops,
1381         .name           = "usbvision-radio",
1382         .release        = video_device_release,
1383         .minor          = -1,
1384         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1385
1386         .tvnorms              = USBVISION_NORMS,
1387         .current_norm         = V4L2_STD_PAL
1388 };
1389
1390 // vbi template
1391 static const struct v4l2_file_operations usbvision_vbi_fops = {
1392         .owner             = THIS_MODULE,
1393         .open           = usbvision_vbi_open,
1394         .release        = usbvision_vbi_close,
1395         .ioctl          = usbvision_vbi_ioctl,
1396 };
1397
1398 static struct video_device usbvision_vbi_template=
1399 {
1400         .fops           = &usbvision_vbi_fops,
1401         .release        = video_device_release,
1402         .name           = "usbvision-vbi",
1403         .minor          = -1,
1404 };
1405
1406
1407 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1408                                         struct video_device *vdev_template,
1409                                         char *name)
1410 {
1411         struct usb_device *usb_dev = usbvision->dev;
1412         struct video_device *vdev;
1413
1414         if (usb_dev == NULL) {
1415                 err("%s: usbvision->dev is not set", __func__);
1416                 return NULL;
1417         }
1418
1419         vdev = video_device_alloc();
1420         if (NULL == vdev) {
1421                 return NULL;
1422         }
1423         *vdev = *vdev_template;
1424 //      vdev->minor   = -1;
1425         vdev->parent  = &usb_dev->dev;
1426         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1427         video_set_drvdata(vdev, usbvision);
1428         return vdev;
1429 }
1430
1431 // unregister video4linux devices
1432 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1433 {
1434         // vbi Device:
1435         if (usbvision->vbi) {
1436                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1437                        usbvision->vbi->num);
1438                 if (usbvision->vbi->minor != -1) {
1439                         video_unregister_device(usbvision->vbi);
1440                 } else {
1441                         video_device_release(usbvision->vbi);
1442                 }
1443                 usbvision->vbi = NULL;
1444         }
1445
1446         // Radio Device:
1447         if (usbvision->rdev) {
1448                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1449                        usbvision->rdev->num);
1450                 if (usbvision->rdev->minor != -1) {
1451                         video_unregister_device(usbvision->rdev);
1452                 } else {
1453                         video_device_release(usbvision->rdev);
1454                 }
1455                 usbvision->rdev = NULL;
1456         }
1457
1458         // Video Device:
1459         if (usbvision->vdev) {
1460                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1461                        usbvision->vdev->num);
1462                 if (usbvision->vdev->minor != -1) {
1463                         video_unregister_device(usbvision->vdev);
1464                 } else {
1465                         video_device_release(usbvision->vdev);
1466                 }
1467                 usbvision->vdev = NULL;
1468         }
1469 }
1470
1471 // register video4linux devices
1472 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1473 {
1474         // Video Device:
1475         usbvision->vdev = usbvision_vdev_init(usbvision,
1476                                               &usbvision_video_template,
1477                                               "USBVision Video");
1478         if (usbvision->vdev == NULL) {
1479                 goto err_exit;
1480         }
1481         if (video_register_device(usbvision->vdev,
1482                                   VFL_TYPE_GRABBER,
1483                                   video_nr)<0) {
1484                 goto err_exit;
1485         }
1486         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1487                usbvision->nr, usbvision->vdev->num);
1488
1489         // Radio Device:
1490         if (usbvision_device_data[usbvision->DevModel].Radio) {
1491                 // usbvision has radio
1492                 usbvision->rdev = usbvision_vdev_init(usbvision,
1493                                                       &usbvision_radio_template,
1494                                                       "USBVision Radio");
1495                 if (usbvision->rdev == NULL) {
1496                         goto err_exit;
1497                 }
1498                 if (video_register_device(usbvision->rdev,
1499                                           VFL_TYPE_RADIO,
1500                                           radio_nr)<0) {
1501                         goto err_exit;
1502                 }
1503                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1504                        usbvision->nr, usbvision->rdev->num);
1505         }
1506         // vbi Device:
1507         if (usbvision_device_data[usbvision->DevModel].vbi) {
1508                 usbvision->vbi = usbvision_vdev_init(usbvision,
1509                                                      &usbvision_vbi_template,
1510                                                      "USBVision VBI");
1511                 if (usbvision->vdev == NULL) {
1512                         goto err_exit;
1513                 }
1514                 if (video_register_device(usbvision->vbi,
1515                                           VFL_TYPE_VBI,
1516                                           vbi_nr)<0) {
1517                         goto err_exit;
1518                 }
1519                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1520                        usbvision->nr, usbvision->vbi->num);
1521         }
1522         // all done
1523         return 0;
1524
1525  err_exit:
1526         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1527         usbvision_unregister_video(usbvision);
1528         return -1;
1529 }
1530
1531 /*
1532  * usbvision_alloc()
1533  *
1534  * This code allocates the struct usb_usbvision.
1535  * It is filled with default values.
1536  *
1537  * Returns NULL on error, a pointer to usb_usbvision else.
1538  *
1539  */
1540 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1541 {
1542         struct usb_usbvision *usbvision;
1543
1544         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1545             NULL) {
1546                 goto err_exit;
1547         }
1548
1549         usbvision->dev = dev;
1550
1551         mutex_init(&usbvision->lock);   /* available */
1552
1553         // prepare control urb for control messages during interrupts
1554         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1555         if (usbvision->ctrlUrb == NULL) {
1556                 goto err_exit;
1557         }
1558         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1559
1560         usbvision_init_powerOffTimer(usbvision);
1561
1562         return usbvision;
1563
1564 err_exit:
1565         if (usbvision && usbvision->ctrlUrb) {
1566                 usb_free_urb(usbvision->ctrlUrb);
1567         }
1568         if (usbvision) {
1569                 kfree(usbvision);
1570         }
1571         return NULL;
1572 }
1573
1574 /*
1575  * usbvision_release()
1576  *
1577  * This code does final release of struct usb_usbvision. This happens
1578  * after the device is disconnected -and- all clients closed their files.
1579  *
1580  */
1581 static void usbvision_release(struct usb_usbvision *usbvision)
1582 {
1583         PDEBUG(DBG_PROBE, "");
1584
1585         mutex_lock(&usbvision->lock);
1586
1587         usbvision_reset_powerOffTimer(usbvision);
1588
1589         usbvision->initialized = 0;
1590
1591         mutex_unlock(&usbvision->lock);
1592
1593         usbvision_remove_sysfs(usbvision->vdev);
1594         usbvision_unregister_video(usbvision);
1595
1596         if (usbvision->ctrlUrb) {
1597                 usb_free_urb(usbvision->ctrlUrb);
1598         }
1599
1600         kfree(usbvision);
1601
1602         PDEBUG(DBG_PROBE, "success");
1603 }
1604
1605
1606 /*********************** usb interface **********************************/
1607
1608 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1609 {
1610         int model;
1611
1612         if (usbvision == NULL)
1613                 return;
1614
1615         model = usbvision->DevModel;
1616         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1617
1618         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1619                 usbvision->Vin_Reg2_Preset =
1620                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1621         } else {
1622                 usbvision->Vin_Reg2_Preset = 0;
1623         }
1624
1625         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1626
1627         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1628         usbvision->ctl_input = 0;
1629
1630         /* This should be here to make i2c clients to be able to register */
1631         /* first switch off audio */
1632         usbvision_audio_off(usbvision);
1633         if (!PowerOnAtOpen) {
1634                 /* and then power up the noisy tuner */
1635                 usbvision_power_on(usbvision);
1636                 usbvision_i2c_register(usbvision);
1637         }
1638 }
1639
1640 /*
1641  * usbvision_probe()
1642  *
1643  * This procedure queries device descriptor and accepts the interface
1644  * if it looks like USBVISION video device
1645  *
1646  */
1647 static int __devinit usbvision_probe(struct usb_interface *intf,
1648                                      const struct usb_device_id *devid)
1649 {
1650         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1651         struct usb_interface *uif;
1652         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1653         const struct usb_host_interface *interface;
1654         struct usb_usbvision *usbvision = NULL;
1655         const struct usb_endpoint_descriptor *endpoint;
1656         int model,i;
1657
1658         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1659                                 dev->descriptor.idVendor,
1660                                 dev->descriptor.idProduct, ifnum);
1661
1662         model = devid->driver_info;
1663         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1664                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1665                 return -ENODEV;
1666         }
1667         printk(KERN_INFO "%s: %s found\n", __func__,
1668                                 usbvision_device_data[model].ModelString);
1669
1670         if (usbvision_device_data[model].Interface >= 0) {
1671                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1672         } else {
1673                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1674         }
1675         endpoint = &interface->endpoint[1].desc;
1676         if (usb_endpoint_type(endpoint) !=
1677             USB_ENDPOINT_XFER_ISOC) {
1678                 err("%s: interface %d. has non-ISO endpoint!",
1679                     __func__, ifnum);
1680                 err("%s: Endpoint attributes %d",
1681                     __func__, endpoint->bmAttributes);
1682                 return -ENODEV;
1683         }
1684         if (usb_endpoint_dir_out(endpoint)) {
1685                 err("%s: interface %d. has ISO OUT endpoint!",
1686                     __func__, ifnum);
1687                 return -ENODEV;
1688         }
1689
1690         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1691                 err("%s: couldn't allocate USBVision struct", __func__);
1692                 return -ENOMEM;
1693         }
1694
1695         if (dev->descriptor.bNumConfigurations > 1) {
1696                 usbvision->bridgeType = BRIDGE_NT1004;
1697         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1698                 usbvision->bridgeType = BRIDGE_NT1005;
1699         } else {
1700                 usbvision->bridgeType = BRIDGE_NT1003;
1701         }
1702         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1703
1704         mutex_lock(&usbvision->lock);
1705
1706         /* compute alternate max packet sizes */
1707         uif = dev->actconfig->interface[0];
1708
1709         usbvision->num_alt=uif->num_altsetting;
1710         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1711         usbvision->alt_max_pkt_size = kmalloc(32*
1712                                               usbvision->num_alt,GFP_KERNEL);
1713         if (usbvision->alt_max_pkt_size == NULL) {
1714                 err("usbvision: out of memory!\n");
1715                 mutex_unlock(&usbvision->lock);
1716                 return -ENOMEM;
1717         }
1718
1719         for (i = 0; i < usbvision->num_alt ; i++) {
1720                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1721                                       wMaxPacketSize);
1722                 usbvision->alt_max_pkt_size[i] =
1723                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1724                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1725                        usbvision->alt_max_pkt_size[i]);
1726         }
1727
1728
1729         usbvision->nr = usbvision_nr++;
1730
1731         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1732         if (usbvision->have_tuner) {
1733                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1734         }
1735
1736         usbvision->tuner_addr = ADDR_UNSET;
1737
1738         usbvision->DevModel = model;
1739         usbvision->remove_pending = 0;
1740         usbvision->iface = ifnum;
1741         usbvision->ifaceAlt = 0;
1742         usbvision->video_endp = endpoint->bEndpointAddress;
1743         usbvision->isocPacketSize = 0;
1744         usbvision->usb_bandwidth = 0;
1745         usbvision->user = 0;
1746         usbvision->streaming = Stream_Off;
1747         usbvision_register_video(usbvision);
1748         usbvision_configure_video(usbvision);
1749         mutex_unlock(&usbvision->lock);
1750
1751
1752         usb_set_intfdata (intf, usbvision);
1753         usbvision_create_sysfs(usbvision->vdev);
1754
1755         PDEBUG(DBG_PROBE, "success");
1756         return 0;
1757 }
1758
1759
1760 /*
1761  * usbvision_disconnect()
1762  *
1763  * This procedure stops all driver activity, deallocates interface-private
1764  * structure (pointed by 'ptr') and after that driver should be removable
1765  * with no ill consequences.
1766  *
1767  */
1768 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1769 {
1770         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1771
1772         PDEBUG(DBG_PROBE, "");
1773
1774         if (usbvision == NULL) {
1775                 err("%s: usb_get_intfdata() failed", __func__);
1776                 return;
1777         }
1778         usb_set_intfdata (intf, NULL);
1779
1780         mutex_lock(&usbvision->lock);
1781
1782         // At this time we ask to cancel outstanding URBs
1783         usbvision_stop_isoc(usbvision);
1784
1785         if (usbvision->power) {
1786                 usbvision_i2c_unregister(usbvision);
1787                 usbvision_power_off(usbvision);
1788         }
1789         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1790
1791         usb_put_dev(usbvision->dev);
1792         usbvision->dev = NULL;  // USB device is no more
1793
1794         mutex_unlock(&usbvision->lock);
1795
1796         if (usbvision->user) {
1797                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1798                        __func__);
1799                 wake_up_interruptible(&usbvision->wait_frame);
1800                 wake_up_interruptible(&usbvision->wait_stream);
1801         } else {
1802                 usbvision_release(usbvision);
1803         }
1804
1805         PDEBUG(DBG_PROBE, "success");
1806 }
1807
1808 static struct usb_driver usbvision_driver = {
1809         .name           = "usbvision",
1810         .id_table       = usbvision_table,
1811         .probe          = usbvision_probe,
1812         .disconnect     = usbvision_disconnect
1813 };
1814
1815 /*
1816  * usbvision_init()
1817  *
1818  * This code is run to initialize the driver.
1819  *
1820  */
1821 static int __init usbvision_init(void)
1822 {
1823         int errCode;
1824
1825         PDEBUG(DBG_PROBE, "");
1826
1827         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1828         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1829         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1830
1831         /* disable planar mode support unless compression enabled */
1832         if (isocMode != ISOC_MODE_COMPRESS ) {
1833                 // FIXME : not the right way to set supported flag
1834                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1835                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1836         }
1837
1838         errCode = usb_register(&usbvision_driver);
1839
1840         if (errCode == 0) {
1841                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1842                 PDEBUG(DBG_PROBE, "success");
1843         }
1844         return errCode;
1845 }
1846
1847 static void __exit usbvision_exit(void)
1848 {
1849  PDEBUG(DBG_PROBE, "");
1850
1851  usb_deregister(&usbvision_driver);
1852  PDEBUG(DBG_PROBE, "success");
1853 }
1854
1855 module_init(usbvision_init);
1856 module_exit(usbvision_exit);
1857
1858 /*
1859  * Overrides for Emacs so that we follow Linus's tabbing style.
1860  * ---------------------------------------------------------------------------
1861  * Local variables:
1862  * c-basic-offset: 8
1863  * End:
1864  */