git.oblomov.eu Git - linux-2.6/blob - 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/tuner.h>
  69 #include <media/audiochip.h>
  70
  71 #include <linux/workqueue.h>
  72
  73 #ifdef CONFIG_KMOD
  74 #include <linux/kmod.h>
  75 #endif
  76
  77 #include "usbvision.h"
  78 #include "usbvision-cards.h"
  79
  80 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  81  Dwaine Garden <DwaineGarden@rogers.com>"
  82 #define DRIVER_NAME "usbvision"
  83 #define DRIVER_ALIAS "USBVision"
  84 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  85 #define DRIVER_LICENSE "GPL"
  86 #define USBVISION_DRIVER_VERSION_MAJOR 0
  87 #define USBVISION_DRIVER_VERSION_MINOR 9
  88 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  89 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  90 USBVISION_DRIVER_VERSION_MINOR,\
  91 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  92 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  93  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  94  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  95
  96 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  97
  98
  99 #ifdef USBVISION_DEBUG
 100         #define PDEBUG(level, fmt, args...) \
 101                 if (video_debug & (level)) \
 102                         info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ ,\
 103                                 ## args)
 104 #else
 105         #define PDEBUG(level, fmt, args...) do {} while(0)
 106 #endif
 107
 108 #define DBG_IO          1<<1
 109 #define DBG_PROBE       1<<2
 110 #define DBG_MMAP        1<<3
 111
 112 //String operations
 113 #define rmspace(str)    while(*str==' ') str++;
 114 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 115
 116
 117 /* sequential number of usbvision device */
 118 static int usbvision_nr = 0;
 119
 120 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 121         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 122         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 123         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 124         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 125         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 126         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 127         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 128         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 129 };
 130
 131 /* Function prototypes */
 132 static void usbvision_release(struct usb_usbvision *usbvision);
 133
 134 /* Default initalization of device driver parameters */
 135 /* Set the default format for ISOC endpoint */
 136 static int isocMode = ISOC_MODE_COMPRESS;
 137 /* Set the default Debug Mode of the device driver */
 138 static int video_debug = 0;
 139 /* Set the default device to power on at startup */
 140 static int PowerOnAtOpen = 1;
 141 /* Sequential Number of Video Device */
 142 static int video_nr = -1;
 143 /* Sequential Number of Radio Device */
 144 static int radio_nr = -1;
 145 /* Sequential Number of VBI Device */
 146 static int vbi_nr = -1;
 147
 148 /* Grab parameters for the device driver */
 149
 150 /* Showing parameters under SYSFS */
 151 module_param(isocMode, int, 0444);
 152 module_param(video_debug, int, 0444);
 153 module_param(PowerOnAtOpen, int, 0444);
 154 module_param(video_nr, int, 0444);
 155 module_param(radio_nr, int, 0444);
 156 module_param(vbi_nr, int, 0444);
 157
 158 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 159 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 160 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 161 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 162 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 163 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 164
 165
 166 // Misc stuff
 167 MODULE_AUTHOR(DRIVER_AUTHOR);
 168 MODULE_DESCRIPTION(DRIVER_DESC);
 169 MODULE_LICENSE(DRIVER_LICENSE);
 170 MODULE_VERSION(USBVISION_VERSION_STRING);
 171 MODULE_ALIAS(DRIVER_ALIAS);
 172
 173
 174 /*****************************************************************************/
 175 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 176 /* Device information is located at /sys/class/video4linux/video0            */
 177 /* Device parameters information is located at /sys/module/usbvision         */
 178 /* Device USB Information is located at                                      */
 179 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 180 /*****************************************************************************/
 181
 182
 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, class_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, class_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, class_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, class_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, class_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, class_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, class_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, class_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, class_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->class_dev,
 309                                          &dev_attr_version);
 310                 if (res<0)
 311                         break;
 312                 res = device_create_file(&vdev->class_dev,
 313                                          &dev_attr_model);
 314                 if (res<0)
 315                         break;
 316                 res = device_create_file(&vdev->class_dev,
 317                                          &dev_attr_hue);
 318                 if (res<0)
 319                         break;
 320                 res = device_create_file(&vdev->class_dev,
 321                                          &dev_attr_contrast);
 322                 if (res<0)
 323                         break;
 324                 res = device_create_file(&vdev->class_dev,
 325                                          &dev_attr_brightness);
 326                 if (res<0)
 327                         break;
 328                 res = device_create_file(&vdev->class_dev,
 329                                          &dev_attr_saturation);
 330                 if (res<0)
 331                         break;
 332                 res = device_create_file(&vdev->class_dev,
 333                                          &dev_attr_streaming);
 334                 if (res<0)
 335                         break;
 336                 res = device_create_file(&vdev->class_dev,
 337                                          &dev_attr_compression);
 338                 if (res<0)
 339                         break;
 340                 res = device_create_file(&vdev->class_dev,
 341                                          &dev_attr_bridge);
 342                 if (res>=0)
 343                         return;
 344         } while (0);
 345
 346         err("%s error: %d\n", __FUNCTION__, res);
 347 }
 348
 349 static void usbvision_remove_sysfs(struct video_device *vdev)
 350 {
 351         if (vdev) {
 352                 device_remove_file(&vdev->class_dev,
 353                                          &dev_attr_version);
 354                 device_remove_file(&vdev->class_dev,
 355                                          &dev_attr_model);
 356                 device_remove_file(&vdev->class_dev,
 357                                          &dev_attr_hue);
 358                 device_remove_file(&vdev->class_dev,
 359                                          &dev_attr_contrast);
 360                 device_remove_file(&vdev->class_dev,
 361                                          &dev_attr_brightness);
 362                 device_remove_file(&vdev->class_dev,
 363                                          &dev_attr_saturation);
 364                 device_remove_file(&vdev->class_dev,
 365                                          &dev_attr_streaming);
 366                 device_remove_file(&vdev->class_dev,
 367                                          &dev_attr_compression);
 368                 device_remove_file(&vdev->class_dev,
 369                                          &dev_attr_bridge);
 370         }
 371 }
 372
 373
 374 /*
 375  * usbvision_open()
 376  *
 377  * This is part of Video 4 Linux API. The driver can be opened by one
 378  * client only (checks internal counter 'usbvision->user'). The procedure
 379  * then allocates buffers needed for video processing.
 380  *
 381  */
 382 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 383 {
 384         struct video_device *dev = video_devdata(file);
 385         struct usb_usbvision *usbvision =
 386                 (struct usb_usbvision *) video_get_drvdata(dev);
 387         int errCode = 0;
 388
 389         PDEBUG(DBG_IO, "open");
 390
 391
 392         usbvision_reset_powerOffTimer(usbvision);
 393
 394         if (usbvision->user)
 395                 errCode = -EBUSY;
 396         else {
 397                 /* Allocate memory for the scratch ring buffer */
 398                 errCode = usbvision_scratch_alloc(usbvision);
 399                 if (isocMode==ISOC_MODE_COMPRESS) {
 400                         /* Allocate intermediate decompression buffers
 401                            only if needed */
 402                         errCode = usbvision_decompress_alloc(usbvision);
 403                 }
 404                 if (errCode) {
 405                         /* Deallocate all buffers if trouble */
 406                         usbvision_scratch_free(usbvision);
 407                         usbvision_decompress_free(usbvision);
 408                 }
 409         }
 410
 411         /* If so far no errors then we shall start the camera */
 412         if (!errCode) {
 413                 mutex_lock(&usbvision->lock);
 414                 if (usbvision->power == 0) {
 415                         usbvision_power_on(usbvision);
 416                         usbvision_i2c_register(usbvision);
 417                 }
 418
 419                 /* Send init sequence only once, it's large! */
 420                 if (!usbvision->initialized) {
 421                         int setup_ok = 0;
 422                         setup_ok = usbvision_setup(usbvision,isocMode);
 423                         if (setup_ok)
 424                                 usbvision->initialized = 1;
 425                         else
 426                                 errCode = -EBUSY;
 427                 }
 428
 429                 if (!errCode) {
 430                         usbvision_begin_streaming(usbvision);
 431                         errCode = usbvision_init_isoc(usbvision);
 432                         /* device must be initialized before isoc transfer */
 433                         usbvision_muxsel(usbvision,0);
 434                         usbvision->user++;
 435                 } else {
 436                         if (PowerOnAtOpen) {
 437                                 usbvision_i2c_unregister(usbvision);
 438                                 usbvision_power_off(usbvision);
 439                                 usbvision->initialized = 0;
 440                         }
 441                 }
 442                 mutex_unlock(&usbvision->lock);
 443         }
 444
 445         if (errCode) {
 446         }
 447
 448         /* prepare queues */
 449         usbvision_empty_framequeues(usbvision);
 450
 451         PDEBUG(DBG_IO, "success");
 452         return errCode;
 453 }
 454
 455 /*
 456  * usbvision_v4l2_close()
 457  *
 458  * This is part of Video 4 Linux API. The procedure
 459  * stops streaming and deallocates all buffers that were earlier
 460  * allocated in usbvision_v4l2_open().
 461  *
 462  */
 463 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 464 {
 465         struct video_device *dev = video_devdata(file);
 466         struct usb_usbvision *usbvision =
 467                 (struct usb_usbvision *) video_get_drvdata(dev);
 468
 469         PDEBUG(DBG_IO, "close");
 470         mutex_lock(&usbvision->lock);
 471
 472         usbvision_audio_off(usbvision);
 473         usbvision_restart_isoc(usbvision);
 474         usbvision_stop_isoc(usbvision);
 475
 476         usbvision_decompress_free(usbvision);
 477         usbvision_frames_free(usbvision);
 478         usbvision_empty_framequeues(usbvision);
 479         usbvision_scratch_free(usbvision);
 480
 481         usbvision->user--;
 482
 483         if (PowerOnAtOpen) {
 484                 /* power off in a little while
 485                    to avoid off/on every close/open short sequences */
 486                 usbvision_set_powerOffTimer(usbvision);
 487                 usbvision->initialized = 0;
 488         }
 489
 490         mutex_unlock(&usbvision->lock);
 491
 492         if (usbvision->remove_pending) {
 493                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
 494                 usbvision_release(usbvision);
 495         }
 496
 497         PDEBUG(DBG_IO, "success");
 498
 499
 500         return 0;
 501 }
 502
 503
 504 /*
 505  * usbvision_ioctl()
 506  *
 507  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 508  *
 509  */
 510 #ifdef CONFIG_VIDEO_ADV_DEBUG
 511 static int vidioc_g_register (struct file *file, void *priv,
 512                                 struct v4l2_register *reg)
 513 {
 514         struct video_device *dev = video_devdata(file);
 515         struct usb_usbvision *usbvision =
 516                 (struct usb_usbvision *) video_get_drvdata(dev);
 517         int errCode;
 518
 519         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 520                 return -EINVAL;
 521         /* NT100x has a 8-bit register space */
 522         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 523         if (errCode < 0) {
 524                 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
 525                     __FUNCTION__, errCode);
 526                 return errCode;
 527         }
 528         reg->val = errCode;
 529         return 0;
 530 }
 531
 532 static int vidioc_s_register (struct file *file, void *priv,
 533                                 struct v4l2_register *reg)
 534 {
 535         struct video_device *dev = video_devdata(file);
 536         struct usb_usbvision *usbvision =
 537                 (struct usb_usbvision *) video_get_drvdata(dev);
 538         int errCode;
 539
 540         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 541                 return -EINVAL;
 542         /* NT100x has a 8-bit register space */
 543         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 544         if (errCode < 0) {
 545                 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
 546                     __FUNCTION__, errCode);
 547                 return errCode;
 548         }
 549         return 0;
 550 }
 551 #endif
 552
 553 static int vidioc_querycap (struct file *file, void  *priv,
 554                                         struct v4l2_capability *vc)
 555 {
 556         struct video_device *dev = video_devdata(file);
 557         struct usb_usbvision *usbvision =
 558                 (struct usb_usbvision *) video_get_drvdata(dev);
 559
 560         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 561         strlcpy(vc->card,
 562                 usbvision_device_data[usbvision->DevModel].ModelString,
 563                 sizeof(vc->card));
 564         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 565                 sizeof(vc->bus_info));
 566         vc->version = USBVISION_DRIVER_VERSION;
 567         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 568                 V4L2_CAP_AUDIO |
 569                 V4L2_CAP_READWRITE |
 570                 V4L2_CAP_STREAMING |
 571                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 572         return 0;
 573 }
 574
 575 static int vidioc_enum_input (struct file *file, void *priv,
 576                                 struct v4l2_input *vi)
 577 {
 578         struct video_device *dev = video_devdata(file);
 579         struct usb_usbvision *usbvision =
 580                 (struct usb_usbvision *) video_get_drvdata(dev);
 581         int chan;
 582
 583         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 584                 return -EINVAL;
 585         if (usbvision->have_tuner) {
 586                 chan = vi->index;
 587         } else {
 588                 chan = vi->index + 1; /*skip Television string*/
 589         }
 590         /* Determine the requested input characteristics
 591            specific for each usbvision card model */
 592         switch(chan) {
 593         case 0:
 594                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 595                         strcpy(vi->name, "White Video Input");
 596                 } else {
 597                         strcpy(vi->name, "Television");
 598                         vi->type = V4L2_INPUT_TYPE_TUNER;
 599                         vi->audioset = 1;
 600                         vi->tuner = chan;
 601                         vi->std = USBVISION_NORMS;
 602                 }
 603                 break;
 604         case 1:
 605                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 606                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 607                         strcpy(vi->name, "Green Video Input");
 608                 } else {
 609                         strcpy(vi->name, "Composite Video Input");
 610                 }
 611                 vi->std = V4L2_STD_PAL;
 612                 break;
 613         case 2:
 614                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 615                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 616                         strcpy(vi->name, "Yellow Video Input");
 617                 } else {
 618                         strcpy(vi->name, "S-Video Input");
 619                 }
 620                 vi->std = V4L2_STD_PAL;
 621                 break;
 622         case 3:
 623                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 624                 strcpy(vi->name, "Red Video Input");
 625                 vi->std = V4L2_STD_PAL;
 626                 break;
 627         }
 628         return 0;
 629 }
 630
 631 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 632 {
 633         struct video_device *dev = video_devdata(file);
 634         struct usb_usbvision *usbvision =
 635                 (struct usb_usbvision *) video_get_drvdata(dev);
 636
 637         *input = usbvision->ctl_input;
 638         return 0;
 639 }
 640
 641 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 642 {
 643         struct video_device *dev = video_devdata(file);
 644         struct usb_usbvision *usbvision =
 645                 (struct usb_usbvision *) video_get_drvdata(dev);
 646
 647         if ((input >= usbvision->video_inputs) || (input < 0) )
 648                 return -EINVAL;
 649
 650         mutex_lock(&usbvision->lock);
 651         usbvision_muxsel(usbvision, input);
 652         usbvision_set_input(usbvision);
 653         usbvision_set_output(usbvision,
 654                              usbvision->curwidth,
 655                              usbvision->curheight);
 656         mutex_unlock(&usbvision->lock);
 657         return 0;
 658 }
 659
 660 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 661 {
 662         struct video_device *dev = video_devdata(file);
 663         struct usb_usbvision *usbvision =
 664                 (struct usb_usbvision *) video_get_drvdata(dev);
 665         usbvision->tvnormId=*id;
 666
 667         mutex_lock(&usbvision->lock);
 668         call_i2c_clients(usbvision, VIDIOC_S_STD,
 669                          &usbvision->tvnormId);
 670         mutex_unlock(&usbvision->lock);
 671         /* propagate the change to the decoder */
 672         usbvision_muxsel(usbvision, usbvision->ctl_input);
 673
 674         return 0;
 675 }
 676
 677 static int vidioc_g_tuner (struct file *file, void *priv,
 678                                 struct v4l2_tuner *vt)
 679 {
 680         struct video_device *dev = video_devdata(file);
 681         struct usb_usbvision *usbvision =
 682                 (struct usb_usbvision *) video_get_drvdata(dev);
 683
 684         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 685                 return -EINVAL;
 686         if(usbvision->radio) {
 687                 strcpy(vt->name, "Radio");
 688                 vt->type = V4L2_TUNER_RADIO;
 689         } else {
 690                 strcpy(vt->name, "Television");
 691         }
 692         /* Let clients fill in the remainder of this struct */
 693         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 694
 695         return 0;
 696 }
 697
 698 static int vidioc_s_tuner (struct file *file, void *priv,
 699                                 struct v4l2_tuner *vt)
 700 {
 701         struct video_device *dev = video_devdata(file);
 702         struct usb_usbvision *usbvision =
 703                 (struct usb_usbvision *) video_get_drvdata(dev);
 704
 705         // Only no or one tuner for now
 706         if (!usbvision->have_tuner || vt->index)
 707                 return -EINVAL;
 708         /* let clients handle this */
 709         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 710
 711         return 0;
 712 }
 713
 714 static int vidioc_g_frequency (struct file *file, void *priv,
 715                                 struct v4l2_frequency *freq)
 716 {
 717         struct video_device *dev = video_devdata(file);
 718         struct usb_usbvision *usbvision =
 719                 (struct usb_usbvision *) video_get_drvdata(dev);
 720
 721         freq->tuner = 0; // Only one tuner
 722         if(usbvision->radio) {
 723                 freq->type = V4L2_TUNER_RADIO;
 724         } else {
 725                 freq->type = V4L2_TUNER_ANALOG_TV;
 726         }
 727         freq->frequency = usbvision->freq;
 728
 729         return 0;
 730 }
 731
 732 static int vidioc_s_frequency (struct file *file, void *priv,
 733                                 struct v4l2_frequency *freq)
 734 {
 735         struct video_device *dev = video_devdata(file);
 736         struct usb_usbvision *usbvision =
 737                 (struct usb_usbvision *) video_get_drvdata(dev);
 738
 739         // Only no or one tuner for now
 740         if (!usbvision->have_tuner || freq->tuner)
 741                 return -EINVAL;
 742
 743         usbvision->freq = freq->frequency;
 744         call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
 745
 746         return 0;
 747 }
 748
 749 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 750 {
 751         struct video_device *dev = video_devdata(file);
 752         struct usb_usbvision *usbvision =
 753                 (struct usb_usbvision *) video_get_drvdata(dev);
 754
 755         memset(a,0,sizeof(*a));
 756         if(usbvision->radio) {
 757                 strcpy(a->name,"Radio");
 758         } else {
 759                 strcpy(a->name, "TV");
 760         }
 761
 762         return 0;
 763 }
 764
 765 static int vidioc_s_audio (struct file *file, void *fh,
 766                           struct v4l2_audio *a)
 767 {
 768         if(a->index) {
 769                 return -EINVAL;
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int vidioc_queryctrl (struct file *file, void *priv,
 776                             struct v4l2_queryctrl *ctrl)
 777 {
 778         struct video_device *dev = video_devdata(file);
 779         struct usb_usbvision *usbvision =
 780                 (struct usb_usbvision *) video_get_drvdata(dev);
 781         int id=ctrl->id;
 782
 783         memset(ctrl,0,sizeof(*ctrl));
 784         ctrl->id=id;
 785
 786         call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
 787
 788         if (!ctrl->type)
 789                 return -EINVAL;
 790
 791         return 0;
 792 }
 793
 794 static int vidioc_g_ctrl (struct file *file, void *priv,
 795                                 struct v4l2_control *ctrl)
 796 {
 797         struct video_device *dev = video_devdata(file);
 798         struct usb_usbvision *usbvision =
 799                 (struct usb_usbvision *) video_get_drvdata(dev);
 800         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 801
 802         return 0;
 803 }
 804
 805 static int vidioc_s_ctrl (struct file *file, void *priv,
 806                                 struct v4l2_control *ctrl)
 807 {
 808         struct video_device *dev = video_devdata(file);
 809         struct usb_usbvision *usbvision =
 810                 (struct usb_usbvision *) video_get_drvdata(dev);
 811         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 812
 813         return 0;
 814 }
 815
 816 static int vidioc_reqbufs (struct file *file,
 817                            void *priv, struct v4l2_requestbuffers *vr)
 818 {
 819         struct video_device *dev = video_devdata(file);
 820         struct usb_usbvision *usbvision =
 821                 (struct usb_usbvision *) video_get_drvdata(dev);
 822         int ret;
 823
 824         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 825
 826         /* Check input validity:
 827            the user must do a VIDEO CAPTURE and MMAP method. */
 828         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 829            (vr->memory != V4L2_MEMORY_MMAP))
 830                 return -EINVAL;
 831
 832         if(usbvision->streaming == Stream_On) {
 833                 if ((ret = usbvision_stream_interrupt(usbvision)))
 834                         return ret;
 835         }
 836
 837         usbvision_frames_free(usbvision);
 838         usbvision_empty_framequeues(usbvision);
 839         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 840
 841         usbvision->curFrame = NULL;
 842
 843         return 0;
 844 }
 845
 846 static int vidioc_querybuf (struct file *file,
 847                             void *priv, struct v4l2_buffer *vb)
 848 {
 849         struct video_device *dev = video_devdata(file);
 850         struct usb_usbvision *usbvision =
 851                 (struct usb_usbvision *) video_get_drvdata(dev);
 852         struct usbvision_frame *frame;
 853
 854         /* FIXME : must control
 855            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 856         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 857                 return -EINVAL;
 858         }
 859         if(vb->index>=usbvision->num_frames)  {
 860                 return -EINVAL;
 861         }
 862         /* Updating the corresponding frame state */
 863         vb->flags = 0;
 864         frame = &usbvision->frame[vb->index];
 865         if(frame->grabstate >= FrameState_Ready)
 866                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 867         if(frame->grabstate >= FrameState_Done)
 868                 vb->flags |= V4L2_BUF_FLAG_DONE;
 869         if(frame->grabstate == FrameState_Unused)
 870                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 871         vb->memory = V4L2_MEMORY_MMAP;
 872
 873         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 874
 875         vb->memory = V4L2_MEMORY_MMAP;
 876         vb->field = V4L2_FIELD_NONE;
 877         vb->length = usbvision->curwidth*
 878                 usbvision->curheight*
 879                 usbvision->palette.bytes_per_pixel;
 880         vb->timestamp = usbvision->frame[vb->index].timestamp;
 881         vb->sequence = usbvision->frame[vb->index].sequence;
 882         return 0;
 883 }
 884
 885 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 886 {
 887         struct video_device *dev = video_devdata(file);
 888         struct usb_usbvision *usbvision =
 889                 (struct usb_usbvision *) video_get_drvdata(dev);
 890         struct usbvision_frame *frame;
 891         unsigned long lock_flags;
 892
 893         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 894         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 895                 return -EINVAL;
 896         }
 897         if(vb->index>=usbvision->num_frames)  {
 898                 return -EINVAL;
 899         }
 900
 901         frame = &usbvision->frame[vb->index];
 902
 903         if (frame->grabstate != FrameState_Unused) {
 904                 return -EAGAIN;
 905         }
 906
 907         /* Mark it as ready and enqueue frame */
 908         frame->grabstate = FrameState_Ready;
 909         frame->scanstate = ScanState_Scanning;
 910         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 911
 912         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 913
 914         /* set v4l2_format index */
 915         frame->v4l2_format = usbvision->palette;
 916
 917         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 918         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 919         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 920
 921         return 0;
 922 }
 923
 924 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 925 {
 926         struct video_device *dev = video_devdata(file);
 927         struct usb_usbvision *usbvision =
 928                 (struct usb_usbvision *) video_get_drvdata(dev);
 929         int ret;
 930         struct usbvision_frame *f;
 931         unsigned long lock_flags;
 932
 933         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 934                 return -EINVAL;
 935
 936         if (list_empty(&(usbvision->outqueue))) {
 937                 if (usbvision->streaming == Stream_Idle)
 938                         return -EINVAL;
 939                 ret = wait_event_interruptible
 940                         (usbvision->wait_frame,
 941                          !list_empty(&(usbvision->outqueue)));
 942                 if (ret)
 943                         return ret;
 944         }
 945
 946         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 947         f = list_entry(usbvision->outqueue.next,
 948                        struct usbvision_frame, frame);
 949         list_del(usbvision->outqueue.next);
 950         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 951
 952         f->grabstate = FrameState_Unused;
 953
 954         vb->memory = V4L2_MEMORY_MMAP;
 955         vb->flags = V4L2_BUF_FLAG_MAPPED |
 956                 V4L2_BUF_FLAG_QUEUED |
 957                 V4L2_BUF_FLAG_DONE;
 958         vb->index = f->index;
 959         vb->sequence = f->sequence;
 960         vb->timestamp = f->timestamp;
 961         vb->field = V4L2_FIELD_NONE;
 962         vb->bytesused = f->scanlength;
 963
 964         return 0;
 965 }
 966
 967 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 968 {
 969         struct video_device *dev = video_devdata(file);
 970         struct usb_usbvision *usbvision =
 971                 (struct usb_usbvision *) video_get_drvdata(dev);
 972         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 973
 974         usbvision->streaming = Stream_On;
 975         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 976
 977         return 0;
 978 }
 979
 980 static int vidioc_streamoff(struct file *file,
 981                             void *priv, enum v4l2_buf_type type)
 982 {
 983         struct video_device *dev = video_devdata(file);
 984         struct usb_usbvision *usbvision =
 985                 (struct usb_usbvision *) video_get_drvdata(dev);
 986         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 987
 988         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 989                 return -EINVAL;
 990
 991         if(usbvision->streaming == Stream_On) {
 992                 usbvision_stream_interrupt(usbvision);
 993                 /* Stop all video streamings */
 994                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 995         }
 996         usbvision_empty_framequeues(usbvision);
 997
 998         return 0;
 999 }
1000
1001 static int vidioc_enum_fmt_cap (struct file *file, void  *priv,
1002                                         struct v4l2_fmtdesc *vfd)
1003 {
1004         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
1005                 return -EINVAL;
1006         }
1007         vfd->flags = 0;
1008         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1009         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
1010         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
1011         memset(vfd->reserved, 0, sizeof(vfd->reserved));
1012         return 0;
1013 }
1014
1015 static int vidioc_g_fmt_cap (struct file *file, void *priv,
1016                                         struct v4l2_format *vf)
1017 {
1018         struct video_device *dev = video_devdata(file);
1019         struct usb_usbvision *usbvision =
1020                 (struct usb_usbvision *) video_get_drvdata(dev);
1021         vf->fmt.pix.width = usbvision->curwidth;
1022         vf->fmt.pix.height = usbvision->curheight;
1023         vf->fmt.pix.pixelformat = usbvision->palette.format;
1024         vf->fmt.pix.bytesperline =
1025                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
1026         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
1027         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1028         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
1029
1030         return 0;
1031 }
1032
1033 static int vidioc_try_fmt_cap (struct file *file, void *priv,
1034                                struct v4l2_format *vf)
1035 {
1036         struct video_device *dev = video_devdata(file);
1037         struct usb_usbvision *usbvision =
1038                 (struct usb_usbvision *) video_get_drvdata(dev);
1039         int formatIdx;
1040
1041         /* Find requested format in available ones */
1042         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1043                 if(vf->fmt.pix.pixelformat ==
1044                    usbvision_v4l2_format[formatIdx].format) {
1045                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1046                         break;
1047                 }
1048         }
1049         /* robustness */
1050         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1051                 return -EINVAL;
1052         }
1053         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1054         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1055
1056         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
1057                 usbvision->palette.bytes_per_pixel;
1058         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1059
1060         return 0;
1061 }
1062
1063 static int vidioc_s_fmt_cap(struct file *file, void *priv,
1064                                struct v4l2_format *vf)
1065 {
1066         struct video_device *dev = video_devdata(file);
1067         struct usb_usbvision *usbvision =
1068                 (struct usb_usbvision *) video_get_drvdata(dev);
1069         int ret;
1070
1071         if( 0 != (ret=vidioc_try_fmt_cap (file, priv, vf)) ) {
1072                 return ret;
1073         }
1074
1075         /* stop io in case it is already in progress */
1076         if(usbvision->streaming == Stream_On) {
1077                 if ((ret = usbvision_stream_interrupt(usbvision)))
1078                         return ret;
1079         }
1080         usbvision_frames_free(usbvision);
1081         usbvision_empty_framequeues(usbvision);
1082
1083         usbvision->curFrame = NULL;
1084
1085         /* by now we are committed to the new data... */
1086         mutex_lock(&usbvision->lock);
1087         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1088         mutex_unlock(&usbvision->lock);
1089
1090         return 0;
1091 }
1092
1093 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1094                       size_t count, loff_t *ppos)
1095 {
1096         struct video_device *dev = video_devdata(file);
1097         struct usb_usbvision *usbvision =
1098                 (struct usb_usbvision *) video_get_drvdata(dev);
1099         int noblock = file->f_flags & O_NONBLOCK;
1100         unsigned long lock_flags;
1101
1102         int ret,i;
1103         struct usbvision_frame *frame;
1104
1105         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__,
1106                (unsigned long)count, noblock);
1107
1108         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1109                 return -EFAULT;
1110
1111         /* This entry point is compatible with the mmap routines
1112            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1113            to get frames or call read on the device. */
1114         if(!usbvision->num_frames) {
1115                 /* First, allocate some frames to work with
1116                    if this has not been done with VIDIOC_REQBUF */
1117                 usbvision_frames_free(usbvision);
1118                 usbvision_empty_framequeues(usbvision);
1119                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1120         }
1121
1122         if(usbvision->streaming != Stream_On) {
1123                 /* no stream is running, make it running ! */
1124                 usbvision->streaming = Stream_On;
1125                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1126         }
1127
1128         /* Then, enqueue as many frames as possible
1129            (like a user of VIDIOC_QBUF would do) */
1130         for(i=0;i<usbvision->num_frames;i++) {
1131                 frame = &usbvision->frame[i];
1132                 if(frame->grabstate == FrameState_Unused) {
1133                         /* Mark it as ready and enqueue frame */
1134                         frame->grabstate = FrameState_Ready;
1135                         frame->scanstate = ScanState_Scanning;
1136                         /* Accumulated in usbvision_parse_data() */
1137                         frame->scanlength = 0;
1138
1139                         /* set v4l2_format index */
1140                         frame->v4l2_format = usbvision->palette;
1141
1142                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1143                         list_add_tail(&frame->frame, &usbvision->inqueue);
1144                         spin_unlock_irqrestore(&usbvision->queue_lock,
1145                                                lock_flags);
1146                 }
1147         }
1148
1149         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1150         if (list_empty(&(usbvision->outqueue))) {
1151                 if(noblock)
1152                         return -EAGAIN;
1153
1154                 ret = wait_event_interruptible
1155                         (usbvision->wait_frame,
1156                          !list_empty(&(usbvision->outqueue)));
1157                 if (ret)
1158                         return ret;
1159         }
1160
1161         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1162         frame = list_entry(usbvision->outqueue.next,
1163                            struct usbvision_frame, frame);
1164         list_del(usbvision->outqueue.next);
1165         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1166
1167         /* An error returns an empty frame */
1168         if (frame->grabstate == FrameState_Error) {
1169                 frame->bytes_read = 0;
1170                 return 0;
1171         }
1172
1173         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1174                __FUNCTION__,
1175                frame->index, frame->bytes_read, frame->scanlength);
1176
1177         /* copy bytes to user space; we allow for partials reads */
1178         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1179                 count = frame->scanlength - frame->bytes_read;
1180
1181         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1182                 return -EFAULT;
1183         }
1184
1185         frame->bytes_read += count;
1186         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1187                __FUNCTION__,
1188                (unsigned long)count, frame->bytes_read);
1189
1190         /* For now, forget the frame if it has not been read in one shot. */
1191 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1192                 frame->bytes_read = 0;
1193
1194                 /* Mark it as available to be used again. */
1195                 frame->grabstate = FrameState_Unused;
1196 /*      } */
1197
1198         return count;
1199 }
1200
1201 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1202 {
1203         unsigned long size = vma->vm_end - vma->vm_start,
1204                 start = vma->vm_start;
1205         void *pos;
1206         u32 i;
1207
1208         struct video_device *dev = video_devdata(file);
1209         struct usb_usbvision *usbvision =
1210                 (struct usb_usbvision *) video_get_drvdata(dev);
1211
1212         PDEBUG(DBG_MMAP, "mmap");
1213
1214         mutex_lock(&usbvision->lock);
1215
1216         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1217                 mutex_unlock(&usbvision->lock);
1218                 return -EFAULT;
1219         }
1220
1221         if (!(vma->vm_flags & VM_WRITE) ||
1222             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1223                 mutex_unlock(&usbvision->lock);
1224                 return -EINVAL;
1225         }
1226
1227         for (i = 0; i < usbvision->num_frames; i++) {
1228                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1229                     vma->vm_pgoff)
1230                         break;
1231         }
1232         if (i == usbvision->num_frames) {
1233                 PDEBUG(DBG_MMAP,
1234                        "mmap: user supplied mapping address is out of range");
1235                 mutex_unlock(&usbvision->lock);
1236                 return -EINVAL;
1237         }
1238
1239         /* VM_IO is eventually going to replace PageReserved altogether */
1240         vma->vm_flags |= VM_IO;
1241         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1242
1243         pos = usbvision->frame[i].data;
1244         while (size > 0) {
1245
1246                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1247                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1248                         mutex_unlock(&usbvision->lock);
1249                         return -EAGAIN;
1250                 }
1251                 start += PAGE_SIZE;
1252                 pos += PAGE_SIZE;
1253                 size -= PAGE_SIZE;
1254         }
1255
1256         mutex_unlock(&usbvision->lock);
1257         return 0;
1258 }
1259
1260
1261 /*
1262  * Here comes the stuff for radio on usbvision based devices
1263  *
1264  */
1265 static int usbvision_radio_open(struct inode *inode, struct file *file)
1266 {
1267         struct video_device *dev = video_devdata(file);
1268         struct usb_usbvision *usbvision =
1269                 (struct usb_usbvision *) video_get_drvdata(dev);
1270         int errCode = 0;
1271
1272         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1273
1274         mutex_lock(&usbvision->lock);
1275
1276         if (usbvision->user) {
1277                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1278                 errCode = -EBUSY;
1279         }
1280         else {
1281                 if(PowerOnAtOpen) {
1282                         usbvision_reset_powerOffTimer(usbvision);
1283                         if (usbvision->power == 0) {
1284                                 usbvision_power_on(usbvision);
1285                                 usbvision_i2c_register(usbvision);
1286                         }
1287                 }
1288
1289                 /* Alternate interface 1 is is the biggest frame size */
1290                 errCode = usbvision_set_alternate(usbvision);
1291                 if (errCode < 0) {
1292                         usbvision->last_error = errCode;
1293                         errCode = -EBUSY;
1294                         goto out;
1295                 }
1296
1297                 // If so far no errors then we shall start the radio
1298                 usbvision->radio = 1;
1299                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1300                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1301                 usbvision->user++;
1302         }
1303
1304         if (errCode) {
1305                 if (PowerOnAtOpen) {
1306                         usbvision_i2c_unregister(usbvision);
1307                         usbvision_power_off(usbvision);
1308                         usbvision->initialized = 0;
1309                 }
1310         }
1311 out:
1312         mutex_unlock(&usbvision->lock);
1313         return errCode;
1314 }
1315
1316
1317 static int usbvision_radio_close(struct inode *inode, struct file *file)
1318 {
1319         struct video_device *dev = video_devdata(file);
1320         struct usb_usbvision *usbvision =
1321                 (struct usb_usbvision *) video_get_drvdata(dev);
1322         int errCode = 0;
1323
1324         PDEBUG(DBG_IO, "");
1325
1326         mutex_lock(&usbvision->lock);
1327
1328         /* Set packet size to 0 */
1329         usbvision->ifaceAlt=0;
1330         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1331                                     usbvision->ifaceAlt);
1332
1333         usbvision_audio_off(usbvision);
1334         usbvision->radio=0;
1335         usbvision->user--;
1336
1337         if (PowerOnAtOpen) {
1338                 usbvision_set_powerOffTimer(usbvision);
1339                 usbvision->initialized = 0;
1340         }
1341
1342         mutex_unlock(&usbvision->lock);
1343
1344         if (usbvision->remove_pending) {
1345                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
1346                 usbvision_release(usbvision);
1347         }
1348
1349
1350         PDEBUG(DBG_IO, "success");
1351
1352         return errCode;
1353 }
1354
1355 /*
1356  * Here comes the stuff for vbi on usbvision based devices
1357  *
1358  */
1359 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1360 {
1361         /* TODO */
1362         return -ENODEV;
1363
1364 }
1365
1366 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1367 {
1368         /* TODO */
1369         return -ENODEV;
1370 }
1371
1372 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1373                                  unsigned int cmd, void *arg)
1374 {
1375         /* TODO */
1376         return -ENOIOCTLCMD;
1377 }
1378
1379 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1380                        unsigned int cmd, unsigned long arg)
1381 {
1382         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1383 }
1384
1385
1386 //
1387 // Video registration stuff
1388 //
1389
1390 // Video template
1391 static const struct file_operations usbvision_fops = {
1392         .owner             = THIS_MODULE,
1393         .open           = usbvision_v4l2_open,
1394         .release        = usbvision_v4l2_close,
1395         .read           = usbvision_v4l2_read,
1396         .mmap           = usbvision_v4l2_mmap,
1397         .ioctl          = video_ioctl2,
1398         .llseek         = no_llseek,
1399 /*      .poll          = video_poll, */
1400         .compat_ioctl  = v4l_compat_ioctl32,
1401 };
1402 static struct video_device usbvision_video_template = {
1403         .owner             = THIS_MODULE,
1404         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1405         .fops           = &usbvision_fops,
1406         .name           = "usbvision-video",
1407         .release        = video_device_release,
1408         .minor          = -1,
1409         .vidioc_querycap      = vidioc_querycap,
1410         .vidioc_enum_fmt_cap  = vidioc_enum_fmt_cap,
1411         .vidioc_g_fmt_cap     = vidioc_g_fmt_cap,
1412         .vidioc_try_fmt_cap   = vidioc_try_fmt_cap,
1413         .vidioc_s_fmt_cap     = vidioc_s_fmt_cap,
1414         .vidioc_reqbufs       = vidioc_reqbufs,
1415         .vidioc_querybuf      = vidioc_querybuf,
1416         .vidioc_qbuf          = vidioc_qbuf,
1417         .vidioc_dqbuf         = vidioc_dqbuf,
1418         .vidioc_s_std         = vidioc_s_std,
1419         .vidioc_enum_input    = vidioc_enum_input,
1420         .vidioc_g_input       = vidioc_g_input,
1421         .vidioc_s_input       = vidioc_s_input,
1422         .vidioc_queryctrl     = vidioc_queryctrl,
1423         .vidioc_g_audio       = vidioc_g_audio,
1424         .vidioc_s_audio       = vidioc_s_audio,
1425         .vidioc_g_ctrl        = vidioc_g_ctrl,
1426         .vidioc_s_ctrl        = vidioc_s_ctrl,
1427         .vidioc_streamon      = vidioc_streamon,
1428         .vidioc_streamoff     = vidioc_streamoff,
1429 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1430 /*      .vidiocgmbuf          = vidiocgmbuf, */
1431 #endif
1432         .vidioc_g_tuner       = vidioc_g_tuner,
1433         .vidioc_s_tuner       = vidioc_s_tuner,
1434         .vidioc_g_frequency   = vidioc_g_frequency,
1435         .vidioc_s_frequency   = vidioc_s_frequency,
1436 #ifdef CONFIG_VIDEO_ADV_DEBUG
1437         .vidioc_g_register    = vidioc_g_register,
1438         .vidioc_s_register    = vidioc_s_register,
1439 #endif
1440         .tvnorms              = USBVISION_NORMS,
1441         .current_norm         = V4L2_STD_PAL
1442 };
1443
1444
1445 // Radio template
1446 static const struct file_operations usbvision_radio_fops = {
1447         .owner             = THIS_MODULE,
1448         .open           = usbvision_radio_open,
1449         .release        = usbvision_radio_close,
1450         .ioctl          = video_ioctl2,
1451         .llseek         = no_llseek,
1452         .compat_ioctl  = v4l_compat_ioctl32,
1453 };
1454
1455 static struct video_device usbvision_radio_template=
1456 {
1457         .owner             = THIS_MODULE,
1458         .type           = VID_TYPE_TUNER,
1459         .fops           = &usbvision_radio_fops,
1460         .name           = "usbvision-radio",
1461         .release        = video_device_release,
1462         .minor          = -1,
1463         .vidioc_querycap      = vidioc_querycap,
1464         .vidioc_enum_input    = vidioc_enum_input,
1465         .vidioc_g_input       = vidioc_g_input,
1466         .vidioc_s_input       = vidioc_s_input,
1467         .vidioc_queryctrl     = vidioc_queryctrl,
1468         .vidioc_g_audio       = vidioc_g_audio,
1469         .vidioc_s_audio       = vidioc_s_audio,
1470         .vidioc_g_ctrl        = vidioc_g_ctrl,
1471         .vidioc_s_ctrl        = vidioc_s_ctrl,
1472         .vidioc_g_tuner       = vidioc_g_tuner,
1473         .vidioc_s_tuner       = vidioc_s_tuner,
1474         .vidioc_g_frequency   = vidioc_g_frequency,
1475         .vidioc_s_frequency   = vidioc_s_frequency,
1476
1477         .tvnorms              = USBVISION_NORMS,
1478         .current_norm         = V4L2_STD_PAL
1479 };
1480
1481 // vbi template
1482 static const struct file_operations usbvision_vbi_fops = {
1483         .owner             = THIS_MODULE,
1484         .open           = usbvision_vbi_open,
1485         .release        = usbvision_vbi_close,
1486         .ioctl          = usbvision_vbi_ioctl,
1487         .llseek         = no_llseek,
1488         .compat_ioctl  = v4l_compat_ioctl32,
1489 };
1490
1491 static struct video_device usbvision_vbi_template=
1492 {
1493         .owner             = THIS_MODULE,
1494         .type           = VID_TYPE_TUNER,
1495         .fops           = &usbvision_vbi_fops,
1496         .release        = video_device_release,
1497         .name           = "usbvision-vbi",
1498         .minor          = -1,
1499 };
1500
1501
1502 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1503                                         struct video_device *vdev_template,
1504                                         char *name)
1505 {
1506         struct usb_device *usb_dev = usbvision->dev;
1507         struct video_device *vdev;
1508
1509         if (usb_dev == NULL) {
1510                 err("%s: usbvision->dev is not set", __FUNCTION__);
1511                 return NULL;
1512         }
1513
1514         vdev = video_device_alloc();
1515         if (NULL == vdev) {
1516                 return NULL;
1517         }
1518         *vdev = *vdev_template;
1519 //      vdev->minor   = -1;
1520         vdev->dev     = &usb_dev->dev;
1521         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1522         video_set_drvdata(vdev, usbvision);
1523         return vdev;
1524 }
1525
1526 // unregister video4linux devices
1527 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1528 {
1529         // vbi Device:
1530         if (usbvision->vbi) {
1531                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1532                        usbvision->vbi->minor & 0x1f);
1533                 if (usbvision->vbi->minor != -1) {
1534                         video_unregister_device(usbvision->vbi);
1535                 } else {
1536                         video_device_release(usbvision->vbi);
1537                 }
1538                 usbvision->vbi = NULL;
1539         }
1540
1541         // Radio Device:
1542         if (usbvision->rdev) {
1543                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1544                        usbvision->rdev->minor & 0x1f);
1545                 if (usbvision->rdev->minor != -1) {
1546                         video_unregister_device(usbvision->rdev);
1547                 } else {
1548                         video_device_release(usbvision->rdev);
1549                 }
1550                 usbvision->rdev = NULL;
1551         }
1552
1553         // Video Device:
1554         if (usbvision->vdev) {
1555                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1556                        usbvision->vdev->minor & 0x1f);
1557                 if (usbvision->vdev->minor != -1) {
1558                         video_unregister_device(usbvision->vdev);
1559                 } else {
1560                         video_device_release(usbvision->vdev);
1561                 }
1562                 usbvision->vdev = NULL;
1563         }
1564 }
1565
1566 // register video4linux devices
1567 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1568 {
1569         // Video Device:
1570         usbvision->vdev = usbvision_vdev_init(usbvision,
1571                                               &usbvision_video_template,
1572                                               "USBVision Video");
1573         if (usbvision->vdev == NULL) {
1574                 goto err_exit;
1575         }
1576         if (video_register_device(usbvision->vdev,
1577                                   VFL_TYPE_GRABBER,
1578                                   video_nr)<0) {
1579                 goto err_exit;
1580         }
1581         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1582                usbvision->nr,usbvision->vdev->minor & 0x1f);
1583
1584         // Radio Device:
1585         if (usbvision_device_data[usbvision->DevModel].Radio) {
1586                 // usbvision has radio
1587                 usbvision->rdev = usbvision_vdev_init(usbvision,
1588                                                       &usbvision_radio_template,
1589                                                       "USBVision Radio");
1590                 if (usbvision->rdev == NULL) {
1591                         goto err_exit;
1592                 }
1593                 if (video_register_device(usbvision->rdev,
1594                                           VFL_TYPE_RADIO,
1595                                           radio_nr)<0) {
1596                         goto err_exit;
1597                 }
1598                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1599                        usbvision->nr, usbvision->rdev->minor & 0x1f);
1600         }
1601         // vbi Device:
1602         if (usbvision_device_data[usbvision->DevModel].vbi) {
1603                 usbvision->vbi = usbvision_vdev_init(usbvision,
1604                                                      &usbvision_vbi_template,
1605                                                      "USBVision VBI");
1606                 if (usbvision->vdev == NULL) {
1607                         goto err_exit;
1608                 }
1609                 if (video_register_device(usbvision->vbi,
1610                                           VFL_TYPE_VBI,
1611                                           vbi_nr)<0) {
1612                         goto err_exit;
1613                 }
1614                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1615                        usbvision->nr,usbvision->vbi->minor & 0x1f);
1616         }
1617         // all done
1618         return 0;
1619
1620  err_exit:
1621         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1622         usbvision_unregister_video(usbvision);
1623         return -1;
1624 }
1625
1626 /*
1627  * usbvision_alloc()
1628  *
1629  * This code allocates the struct usb_usbvision.
1630  * It is filled with default values.
1631  *
1632  * Returns NULL on error, a pointer to usb_usbvision else.
1633  *
1634  */
1635 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1636 {
1637         struct usb_usbvision *usbvision;
1638
1639         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1640             NULL) {
1641                 goto err_exit;
1642         }
1643
1644         usbvision->dev = dev;
1645
1646         mutex_init(&usbvision->lock);   /* available */
1647
1648         // prepare control urb for control messages during interrupts
1649         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1650         if (usbvision->ctrlUrb == NULL) {
1651                 goto err_exit;
1652         }
1653         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1654         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1655
1656         usbvision_init_powerOffTimer(usbvision);
1657
1658         return usbvision;
1659
1660 err_exit:
1661         if (usbvision && usbvision->ctrlUrb) {
1662                 usb_free_urb(usbvision->ctrlUrb);
1663         }
1664         if (usbvision) {
1665                 kfree(usbvision);
1666         }
1667         return NULL;
1668 }
1669
1670 /*
1671  * usbvision_release()
1672  *
1673  * This code does final release of struct usb_usbvision. This happens
1674  * after the device is disconnected -and- all clients closed their files.
1675  *
1676  */
1677 static void usbvision_release(struct usb_usbvision *usbvision)
1678 {
1679         PDEBUG(DBG_PROBE, "");
1680
1681         mutex_lock(&usbvision->lock);
1682
1683         usbvision_reset_powerOffTimer(usbvision);
1684
1685         usbvision->initialized = 0;
1686
1687         mutex_unlock(&usbvision->lock);
1688
1689         usbvision_remove_sysfs(usbvision->vdev);
1690         usbvision_unregister_video(usbvision);
1691
1692         if (usbvision->ctrlUrb) {
1693                 usb_free_urb(usbvision->ctrlUrb);
1694         }
1695
1696         kfree(usbvision);
1697
1698         PDEBUG(DBG_PROBE, "success");
1699 }
1700
1701
1702 /*********************** usb interface **********************************/
1703
1704 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1705 {
1706         int model;
1707
1708         if (usbvision == NULL)
1709                 return;
1710
1711         model = usbvision->DevModel;
1712         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1713
1714         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1715                 usbvision->Vin_Reg2_Preset =
1716                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1717         } else {
1718                 usbvision->Vin_Reg2_Preset = 0;
1719         }
1720
1721         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1722
1723         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1724         usbvision->ctl_input = 0;
1725
1726         /* This should be here to make i2c clients to be able to register */
1727         /* first switch off audio */
1728         usbvision_audio_off(usbvision);
1729         if (!PowerOnAtOpen) {
1730                 /* and then power up the noisy tuner */
1731                 usbvision_power_on(usbvision);
1732                 usbvision_i2c_register(usbvision);
1733         }
1734 }
1735
1736 /*
1737  * usbvision_probe()
1738  *
1739  * This procedure queries device descriptor and accepts the interface
1740  * if it looks like USBVISION video device
1741  *
1742  */
1743 static int __devinit usbvision_probe(struct usb_interface *intf,
1744                                      const struct usb_device_id *devid)
1745 {
1746         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1747         struct usb_interface *uif;
1748         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1749         const struct usb_host_interface *interface;
1750         struct usb_usbvision *usbvision = NULL;
1751         const struct usb_endpoint_descriptor *endpoint;
1752         int model,i;
1753
1754         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1755                                 dev->descriptor.idVendor,
1756                                 dev->descriptor.idProduct, ifnum);
1757
1758         model = devid->driver_info;
1759         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1760                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1761                 return -ENODEV;
1762         }
1763         printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1764                                 usbvision_device_data[model].ModelString);
1765
1766         if (usbvision_device_data[model].Interface >= 0) {
1767                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1768         } else {
1769                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1770         }
1771         endpoint = &interface->endpoint[1].desc;
1772         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1773             USB_ENDPOINT_XFER_ISOC) {
1774                 err("%s: interface %d. has non-ISO endpoint!",
1775                     __FUNCTION__, ifnum);
1776                 err("%s: Endpoint attributes %d",
1777                     __FUNCTION__, endpoint->bmAttributes);
1778                 return -ENODEV;
1779         }
1780         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1781             USB_DIR_OUT) {
1782                 err("%s: interface %d. has ISO OUT endpoint!",
1783                     __FUNCTION__, ifnum);
1784                 return -ENODEV;
1785         }
1786
1787         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1788                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1789                 return -ENOMEM;
1790         }
1791
1792         if (dev->descriptor.bNumConfigurations > 1) {
1793                 usbvision->bridgeType = BRIDGE_NT1004;
1794         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1795                 usbvision->bridgeType = BRIDGE_NT1005;
1796         } else {
1797                 usbvision->bridgeType = BRIDGE_NT1003;
1798         }
1799         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1800
1801         mutex_lock(&usbvision->lock);
1802
1803         /* compute alternate max packet sizes */
1804         uif = dev->actconfig->interface[0];
1805
1806         usbvision->num_alt=uif->num_altsetting;
1807         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1808         usbvision->alt_max_pkt_size = kmalloc(32*
1809                                               usbvision->num_alt,GFP_KERNEL);
1810         if (usbvision->alt_max_pkt_size == NULL) {
1811                 err("usbvision: out of memory!\n");
1812                 mutex_unlock(&usbvision->lock);
1813                 return -ENOMEM;
1814         }
1815
1816         for (i = 0; i < usbvision->num_alt ; i++) {
1817                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1818                                       wMaxPacketSize);
1819                 usbvision->alt_max_pkt_size[i] =
1820                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1821                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1822                        usbvision->alt_max_pkt_size[i]);
1823         }
1824
1825
1826         usbvision->nr = usbvision_nr++;
1827
1828         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1829         if (usbvision->have_tuner) {
1830                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1831         }
1832
1833         usbvision->tuner_addr = ADDR_UNSET;
1834
1835         usbvision->DevModel = model;
1836         usbvision->remove_pending = 0;
1837         usbvision->iface = ifnum;
1838         usbvision->ifaceAlt = 0;
1839         usbvision->video_endp = endpoint->bEndpointAddress;
1840         usbvision->isocPacketSize = 0;
1841         usbvision->usb_bandwidth = 0;
1842         usbvision->user = 0;
1843         usbvision->streaming = Stream_Off;
1844         usbvision_register_video(usbvision);
1845         usbvision_configure_video(usbvision);
1846         mutex_unlock(&usbvision->lock);
1847
1848
1849         usb_set_intfdata (intf, usbvision);
1850         usbvision_create_sysfs(usbvision->vdev);
1851
1852         PDEBUG(DBG_PROBE, "success");
1853         return 0;
1854 }
1855
1856
1857 /*
1858  * usbvision_disconnect()
1859  *
1860  * This procedure stops all driver activity, deallocates interface-private
1861  * structure (pointed by 'ptr') and after that driver should be removable
1862  * with no ill consequences.
1863  *
1864  */
1865 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1866 {
1867         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1868
1869         PDEBUG(DBG_PROBE, "");
1870
1871         if (usbvision == NULL) {
1872                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1873                 return;
1874         }
1875         usb_set_intfdata (intf, NULL);
1876
1877         mutex_lock(&usbvision->lock);
1878
1879         // At this time we ask to cancel outstanding URBs
1880         usbvision_stop_isoc(usbvision);
1881
1882         if (usbvision->power) {
1883                 usbvision_i2c_unregister(usbvision);
1884                 usbvision_power_off(usbvision);
1885         }
1886         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1887
1888         usb_put_dev(usbvision->dev);
1889         usbvision->dev = NULL;  // USB device is no more
1890
1891         mutex_unlock(&usbvision->lock);
1892
1893         if (usbvision->user) {
1894                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1895                        __FUNCTION__);
1896                 wake_up_interruptible(&usbvision->wait_frame);
1897                 wake_up_interruptible(&usbvision->wait_stream);
1898         } else {
1899                 usbvision_release(usbvision);
1900         }
1901
1902         PDEBUG(DBG_PROBE, "success");
1903
1904 }
1905
1906 static struct usb_driver usbvision_driver = {
1907         .name           = "usbvision",
1908         .id_table       = usbvision_table,
1909         .probe          = usbvision_probe,
1910         .disconnect     = usbvision_disconnect
1911 };
1912
1913 /*
1914  * usbvision_init()
1915  *
1916  * This code is run to initialize the driver.
1917  *
1918  */
1919 static int __init usbvision_init(void)
1920 {
1921         int errCode;
1922
1923         PDEBUG(DBG_PROBE, "");
1924
1925         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1926         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1927         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1928
1929         /* disable planar mode support unless compression enabled */
1930         if (isocMode != ISOC_MODE_COMPRESS ) {
1931                 // FIXME : not the right way to set supported flag
1932                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1933                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1934         }
1935
1936         errCode = usb_register(&usbvision_driver);
1937
1938         if (errCode == 0) {
1939                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1940                 PDEBUG(DBG_PROBE, "success");
1941         }
1942         return errCode;
1943 }
1944
1945 static void __exit usbvision_exit(void)
1946 {
1947  PDEBUG(DBG_PROBE, "");
1948
1949  usb_deregister(&usbvision_driver);
1950  PDEBUG(DBG_PROBE, "success");
1951 }
1952
1953 module_init(usbvision_init);
1954 module_exit(usbvision_exit);
1955
1956 /*
1957  * Overrides for Emacs so that we follow Linus's tabbing style.
1958  * ---------------------------------------------------------------------------
1959  * Local variables:
1960  * c-basic-offset: 8
1961  * End:
1962  */