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