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/moduleparam.h>
  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, __PRETTY_FUNCTION__, __LINE__ ,\
 104                                 ## args)
 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 = 0;
 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 initalization 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 = 0;
 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
 184 #define YES_NO(x) ((x) ? "Yes" : "No")
 185
 186 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 187 {
 188         struct video_device *vdev =
 189                 container_of(cd, struct video_device, class_dev);
 190         return video_get_drvdata(vdev);
 191 }
 192
 193 static ssize_t show_version(struct class_device *cd, char *buf)
 194 {
 195         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 196 }
 197 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 198
 199 static ssize_t show_model(struct class_device *cd, char *buf)
 200 {
 201         struct video_device *vdev =
 202                 container_of(cd, struct video_device, class_dev);
 203         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 204         return sprintf(buf, "%s\n",
 205                        usbvision_device_data[usbvision->DevModel].ModelString);
 206 }
 207 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 208
 209 static ssize_t show_hue(struct class_device *cd, char *buf)
 210 {
 211         struct video_device *vdev =
 212                 container_of(cd, struct video_device, class_dev);
 213         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 214         struct v4l2_control ctrl;
 215         ctrl.id = V4L2_CID_HUE;
 216         ctrl.value = 0;
 217         if(usbvision->user)
 218                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 219         return sprintf(buf, "%d\n", ctrl.value);
 220 }
 221 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 222
 223 static ssize_t show_contrast(struct class_device *cd, char *buf)
 224 {
 225         struct video_device *vdev =
 226                 container_of(cd, struct video_device, class_dev);
 227         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 228         struct v4l2_control ctrl;
 229         ctrl.id = V4L2_CID_CONTRAST;
 230         ctrl.value = 0;
 231         if(usbvision->user)
 232                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 233         return sprintf(buf, "%d\n", ctrl.value);
 234 }
 235 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 236
 237 static ssize_t show_brightness(struct class_device *cd, char *buf)
 238 {
 239         struct video_device *vdev =
 240                 container_of(cd, struct video_device, class_dev);
 241         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 242         struct v4l2_control ctrl;
 243         ctrl.id = V4L2_CID_BRIGHTNESS;
 244         ctrl.value = 0;
 245         if(usbvision->user)
 246                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 247         return sprintf(buf, "%d\n", ctrl.value);
 248 }
 249 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 250
 251 static ssize_t show_saturation(struct class_device *cd, char *buf)
 252 {
 253         struct video_device *vdev =
 254                 container_of(cd, struct video_device, class_dev);
 255         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 256         struct v4l2_control ctrl;
 257         ctrl.id = V4L2_CID_SATURATION;
 258         ctrl.value = 0;
 259         if(usbvision->user)
 260                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 261         return sprintf(buf, "%d\n", ctrl.value);
 262 }
 263 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 264
 265 static ssize_t show_streaming(struct class_device *cd, char *buf)
 266 {
 267         struct video_device *vdev =
 268                 container_of(cd, struct video_device, class_dev);
 269         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 270         return sprintf(buf, "%s\n",
 271                        YES_NO(usbvision->streaming==Stream_On?1:0));
 272 }
 273 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 274
 275 static ssize_t show_compression(struct class_device *cd, char *buf)
 276 {
 277         struct video_device *vdev =
 278                 container_of(cd, struct video_device, class_dev);
 279         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 280         return sprintf(buf, "%s\n",
 281                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 282 }
 283 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 284
 285 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
 286 {
 287         struct video_device *vdev =
 288                 container_of(cd, struct video_device, class_dev);
 289         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 290         return sprintf(buf, "%d\n", usbvision->bridgeType);
 291 }
 292 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 293
 294 static void usbvision_create_sysfs(struct video_device *vdev)
 295 {
 296         int res;
 297         if (!vdev)
 298                 return;
 299         do {
 300                 res=class_device_create_file(&vdev->class_dev,
 301                                              &class_device_attr_version);
 302                 if (res<0)
 303                         break;
 304                 res=class_device_create_file(&vdev->class_dev,
 305                                              &class_device_attr_model);
 306                 if (res<0)
 307                         break;
 308                 res=class_device_create_file(&vdev->class_dev,
 309                                              &class_device_attr_hue);
 310                 if (res<0)
 311                         break;
 312                 res=class_device_create_file(&vdev->class_dev,
 313                                              &class_device_attr_contrast);
 314                 if (res<0)
 315                         break;
 316                 res=class_device_create_file(&vdev->class_dev,
 317                                              &class_device_attr_brightness);
 318                 if (res<0)
 319                         break;
 320                 res=class_device_create_file(&vdev->class_dev,
 321                                              &class_device_attr_saturation);
 322                 if (res<0)
 323                         break;
 324                 res=class_device_create_file(&vdev->class_dev,
 325                                              &class_device_attr_streaming);
 326                 if (res<0)
 327                         break;
 328                 res=class_device_create_file(&vdev->class_dev,
 329                                              &class_device_attr_compression);
 330                 if (res<0)
 331                         break;
 332                 res=class_device_create_file(&vdev->class_dev,
 333                                              &class_device_attr_bridge);
 334                 if (res>=0)
 335                         return;
 336         } while (0);
 337
 338         err("%s error: %d\n", __FUNCTION__, res);
 339 }
 340
 341 static void usbvision_remove_sysfs(struct video_device *vdev)
 342 {
 343         if (vdev) {
 344                 class_device_remove_file(&vdev->class_dev,
 345                                          &class_device_attr_version);
 346                 class_device_remove_file(&vdev->class_dev,
 347                                          &class_device_attr_model);
 348                 class_device_remove_file(&vdev->class_dev,
 349                                          &class_device_attr_hue);
 350                 class_device_remove_file(&vdev->class_dev,
 351                                          &class_device_attr_contrast);
 352                 class_device_remove_file(&vdev->class_dev,
 353                                          &class_device_attr_brightness);
 354                 class_device_remove_file(&vdev->class_dev,
 355                                          &class_device_attr_saturation);
 356                 class_device_remove_file(&vdev->class_dev,
 357                                          &class_device_attr_streaming);
 358                 class_device_remove_file(&vdev->class_dev,
 359                                          &class_device_attr_compression);
 360                 class_device_remove_file(&vdev->class_dev,
 361                                          &class_device_attr_bridge);
 362         }
 363 }
 364
 365
 366 /*
 367  * usbvision_open()
 368  *
 369  * This is part of Video 4 Linux API. The driver can be opened by one
 370  * client only (checks internal counter 'usbvision->user'). The procedure
 371  * then allocates buffers needed for video processing.
 372  *
 373  */
 374 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 375 {
 376         struct video_device *dev = video_devdata(file);
 377         struct usb_usbvision *usbvision =
 378                 (struct usb_usbvision *) video_get_drvdata(dev);
 379         int errCode = 0;
 380
 381         PDEBUG(DBG_IO, "open");
 382
 383
 384         usbvision_reset_powerOffTimer(usbvision);
 385
 386         if (usbvision->user)
 387                 errCode = -EBUSY;
 388         else {
 389                 /* Allocate memory for the scratch ring buffer */
 390                 errCode = usbvision_scratch_alloc(usbvision);
 391                 if (isocMode==ISOC_MODE_COMPRESS) {
 392                         /* Allocate intermediate decompression buffers
 393                            only if needed */
 394                         errCode = usbvision_decompress_alloc(usbvision);
 395                 }
 396                 if (errCode) {
 397                         /* Deallocate all buffers if trouble */
 398                         usbvision_scratch_free(usbvision);
 399                         usbvision_decompress_free(usbvision);
 400                 }
 401         }
 402
 403         /* If so far no errors then we shall start the camera */
 404         if (!errCode) {
 405                 down(&usbvision->lock);
 406                 if (usbvision->power == 0) {
 407                         usbvision_power_on(usbvision);
 408                         usbvision_i2c_register(usbvision);
 409                 }
 410
 411                 /* Send init sequence only once, it's large! */
 412                 if (!usbvision->initialized) {
 413                         int setup_ok = 0;
 414                         setup_ok = usbvision_setup(usbvision,isocMode);
 415                         if (setup_ok)
 416                                 usbvision->initialized = 1;
 417                         else
 418                                 errCode = -EBUSY;
 419                 }
 420
 421                 if (!errCode) {
 422                         usbvision_begin_streaming(usbvision);
 423                         errCode = usbvision_init_isoc(usbvision);
 424                         /* device must be initialized before isoc transfer */
 425                         usbvision_muxsel(usbvision,0);
 426                         usbvision->user++;
 427                 } else {
 428                         if (PowerOnAtOpen) {
 429                                 usbvision_i2c_unregister(usbvision);
 430                                 usbvision_power_off(usbvision);
 431                                 usbvision->initialized = 0;
 432                         }
 433                 }
 434                 up(&usbvision->lock);
 435         }
 436
 437         if (errCode) {
 438         }
 439
 440         /* prepare queues */
 441         usbvision_empty_framequeues(usbvision);
 442
 443         PDEBUG(DBG_IO, "success");
 444         return errCode;
 445 }
 446
 447 /*
 448  * usbvision_v4l2_close()
 449  *
 450  * This is part of Video 4 Linux API. The procedure
 451  * stops streaming and deallocates all buffers that were earlier
 452  * allocated in usbvision_v4l2_open().
 453  *
 454  */
 455 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 456 {
 457         struct video_device *dev = video_devdata(file);
 458         struct usb_usbvision *usbvision =
 459                 (struct usb_usbvision *) video_get_drvdata(dev);
 460
 461         PDEBUG(DBG_IO, "close");
 462         down(&usbvision->lock);
 463
 464         usbvision_audio_off(usbvision);
 465         usbvision_restart_isoc(usbvision);
 466         usbvision_stop_isoc(usbvision);
 467
 468         usbvision_decompress_free(usbvision);
 469         usbvision_frames_free(usbvision);
 470         usbvision_empty_framequeues(usbvision);
 471         usbvision_scratch_free(usbvision);
 472
 473         usbvision->user--;
 474
 475         if (PowerOnAtOpen) {
 476                 /* power off in a little while
 477                    to avoid off/on every close/open short sequences */
 478                 usbvision_set_powerOffTimer(usbvision);
 479                 usbvision->initialized = 0;
 480         }
 481
 482         up(&usbvision->lock);
 483
 484         if (usbvision->remove_pending) {
 485                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
 486                 usbvision_release(usbvision);
 487         }
 488
 489         PDEBUG(DBG_IO, "success");
 490
 491
 492         return 0;
 493 }
 494
 495
 496 /*
 497  * usbvision_ioctl()
 498  *
 499  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 500  *
 501  */
 502 #ifdef CONFIG_VIDEO_ADV_DEBUG
 503 static int vidioc_g_register (struct file *file, void *priv,
 504                                 struct v4l2_register *reg)
 505 {
 506         struct video_device *dev = video_devdata(file);
 507         struct usb_usbvision *usbvision =
 508                 (struct usb_usbvision *) video_get_drvdata(dev);
 509         int errCode;
 510
 511         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 512                 return -EINVAL;
 513         /* NT100x has a 8-bit register space */
 514         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 515         if (errCode < 0) {
 516                 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
 517                     __FUNCTION__, errCode);
 518                 return errCode;
 519         }
 520         return 0;
 521 }
 522
 523 static int vidioc_s_register (struct file *file, void *priv,
 524                                 struct v4l2_register *reg)
 525 {
 526         struct video_device *dev = video_devdata(file);
 527         struct usb_usbvision *usbvision =
 528                 (struct usb_usbvision *) video_get_drvdata(dev);
 529         int errCode;
 530
 531         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 532                 return -EINVAL;
 533         /* NT100x has a 8-bit register space */
 534         reg->val = (u8)usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 535         if (reg->val < 0) {
 536                 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
 537                     __FUNCTION__, errCode);
 538                 return errCode;
 539         }
 540         return 0;
 541 }
 542 #endif
 543
 544 static int vidioc_querycap (struct file *file, void  *priv,
 545                                         struct v4l2_capability *vc)
 546 {
 547         struct video_device *dev = video_devdata(file);
 548         struct usb_usbvision *usbvision =
 549                 (struct usb_usbvision *) video_get_drvdata(dev);
 550
 551         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 552         strlcpy(vc->card,
 553                 usbvision_device_data[usbvision->DevModel].ModelString,
 554                 sizeof(vc->card));
 555         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 556                 sizeof(vc->bus_info));
 557         vc->version = USBVISION_DRIVER_VERSION;
 558         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 559                 V4L2_CAP_AUDIO |
 560                 V4L2_CAP_READWRITE |
 561                 V4L2_CAP_STREAMING |
 562                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 563         return 0;
 564 }
 565
 566 static int vidioc_enum_input (struct file *file, void *priv,
 567                                 struct v4l2_input *vi)
 568 {
 569         struct video_device *dev = video_devdata(file);
 570         struct usb_usbvision *usbvision =
 571                 (struct usb_usbvision *) video_get_drvdata(dev);
 572         int chan;
 573
 574         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 575                 return -EINVAL;
 576         if (usbvision->have_tuner) {
 577                 chan = vi->index;
 578         } else {
 579                 chan = vi->index + 1; /*skip Television string*/
 580         }
 581         /* Determine the requested input characteristics
 582            specific for each usbvision card model */
 583         switch(chan) {
 584         case 0:
 585                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 586                         strcpy(vi->name, "White Video Input");
 587                 } else {
 588                         strcpy(vi->name, "Television");
 589                         vi->type = V4L2_INPUT_TYPE_TUNER;
 590                         vi->audioset = 1;
 591                         vi->tuner = chan;
 592                         vi->std = USBVISION_NORMS;
 593                 }
 594                 break;
 595         case 1:
 596                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 597                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 598                         strcpy(vi->name, "Green Video Input");
 599                 } else {
 600                         strcpy(vi->name, "Composite Video Input");
 601                 }
 602                 vi->std = V4L2_STD_PAL;
 603                 break;
 604         case 2:
 605                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 606                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 607                         strcpy(vi->name, "Yellow Video Input");
 608                 } else {
 609                         strcpy(vi->name, "S-Video Input");
 610                 }
 611                 vi->std = V4L2_STD_PAL;
 612                 break;
 613         case 3:
 614                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 615                 strcpy(vi->name, "Red Video Input");
 616                 vi->std = V4L2_STD_PAL;
 617                 break;
 618         }
 619         return 0;
 620 }
 621
 622 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 623 {
 624         struct video_device *dev = video_devdata(file);
 625         struct usb_usbvision *usbvision =
 626                 (struct usb_usbvision *) video_get_drvdata(dev);
 627
 628         *input = usbvision->ctl_input;
 629         return 0;
 630 }
 631
 632 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 633 {
 634         struct video_device *dev = video_devdata(file);
 635         struct usb_usbvision *usbvision =
 636                 (struct usb_usbvision *) video_get_drvdata(dev);
 637
 638         if ((input >= usbvision->video_inputs) || (input < 0) )
 639                 return -EINVAL;
 640         usbvision->ctl_input = input;
 641
 642         down(&usbvision->lock);
 643         usbvision_muxsel(usbvision, usbvision->ctl_input);
 644         usbvision_set_input(usbvision);
 645         usbvision_set_output(usbvision,
 646                              usbvision->curwidth,
 647                              usbvision->curheight);
 648         up(&usbvision->lock);
 649         return 0;
 650 }
 651
 652 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 653 {
 654         struct video_device *dev = video_devdata(file);
 655         struct usb_usbvision *usbvision =
 656                 (struct usb_usbvision *) video_get_drvdata(dev);
 657         usbvision->tvnormId=*id;
 658
 659         down(&usbvision->lock);
 660         call_i2c_clients(usbvision, VIDIOC_S_STD,
 661                          &usbvision->tvnormId);
 662         up(&usbvision->lock);
 663
 664         return 0;
 665 }
 666
 667 static int vidioc_g_tuner (struct file *file, void *priv,
 668                                 struct v4l2_tuner *vt)
 669 {
 670         struct video_device *dev = video_devdata(file);
 671         struct usb_usbvision *usbvision =
 672                 (struct usb_usbvision *) video_get_drvdata(dev);
 673
 674         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 675                 return -EINVAL;
 676         if(usbvision->radio) {
 677                 strcpy(vt->name, "Radio");
 678                 vt->type = V4L2_TUNER_RADIO;
 679         } else {
 680                 strcpy(vt->name, "Television");
 681         }
 682         /* Let clients fill in the remainder of this struct */
 683         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 684
 685         return 0;
 686 }
 687
 688 static int vidioc_s_tuner (struct file *file, void *priv,
 689                                 struct v4l2_tuner *vt)
 690 {
 691         struct video_device *dev = video_devdata(file);
 692         struct usb_usbvision *usbvision =
 693                 (struct usb_usbvision *) video_get_drvdata(dev);
 694
 695         // Only no or one tuner for now
 696         if (!usbvision->have_tuner || vt->index)
 697                 return -EINVAL;
 698         /* let clients handle this */
 699         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 700
 701         return 0;
 702 }
 703
 704 static int vidioc_g_frequency (struct file *file, void *priv,
 705                                 struct v4l2_frequency *freq)
 706 {
 707         struct video_device *dev = video_devdata(file);
 708         struct usb_usbvision *usbvision =
 709                 (struct usb_usbvision *) video_get_drvdata(dev);
 710
 711         freq->tuner = 0; // Only one tuner
 712         if(usbvision->radio) {
 713                 freq->type = V4L2_TUNER_RADIO;
 714         } else {
 715                 freq->type = V4L2_TUNER_ANALOG_TV;
 716         }
 717         freq->frequency = usbvision->freq;
 718
 719         return 0;
 720 }
 721
 722 static int vidioc_s_frequency (struct file *file, void *priv,
 723                                 struct v4l2_frequency *freq)
 724 {
 725         struct video_device *dev = video_devdata(file);
 726         struct usb_usbvision *usbvision =
 727                 (struct usb_usbvision *) video_get_drvdata(dev);
 728
 729         // Only no or one tuner for now
 730         if (!usbvision->have_tuner || freq->tuner)
 731                 return -EINVAL;
 732
 733         usbvision->freq = freq->frequency;
 734         call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
 735
 736         return 0;
 737 }
 738
 739 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 740 {
 741         struct video_device *dev = video_devdata(file);
 742         struct usb_usbvision *usbvision =
 743                 (struct usb_usbvision *) video_get_drvdata(dev);
 744
 745         memset(a,0,sizeof(*a));
 746         if(usbvision->radio) {
 747                 strcpy(a->name,"Radio");
 748         } else {
 749                 strcpy(a->name, "TV");
 750         }
 751
 752         return 0;
 753 }
 754
 755 static int vidioc_s_audio (struct file *file, void *fh,
 756                           struct v4l2_audio *a)
 757 {
 758         if(a->index) {
 759                 return -EINVAL;
 760         }
 761
 762         return 0;
 763 }
 764
 765 static int vidioc_queryctrl (struct file *file, void *priv,
 766                             struct v4l2_queryctrl *ctrl)
 767 {
 768         struct video_device *dev = video_devdata(file);
 769         struct usb_usbvision *usbvision =
 770                 (struct usb_usbvision *) video_get_drvdata(dev);
 771         int id=ctrl->id;
 772
 773         memset(ctrl,0,sizeof(*ctrl));
 774         ctrl->id=id;
 775
 776         call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
 777
 778         if (!ctrl->type)
 779                 return -EINVAL;
 780
 781         return 0;
 782 }
 783
 784 static int vidioc_g_ctrl (struct file *file, void *priv,
 785                                 struct v4l2_control *ctrl)
 786 {
 787         struct video_device *dev = video_devdata(file);
 788         struct usb_usbvision *usbvision =
 789                 (struct usb_usbvision *) video_get_drvdata(dev);
 790         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 791
 792         return 0;
 793 }
 794
 795 static int vidioc_s_ctrl (struct file *file, void *priv,
 796                                 struct v4l2_control *ctrl)
 797 {
 798         struct video_device *dev = video_devdata(file);
 799         struct usb_usbvision *usbvision =
 800                 (struct usb_usbvision *) video_get_drvdata(dev);
 801         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 802
 803         return 0;
 804 }
 805
 806 static int vidioc_reqbufs (struct file *file,
 807                            void *priv, struct v4l2_requestbuffers *vr)
 808 {
 809         struct video_device *dev = video_devdata(file);
 810         struct usb_usbvision *usbvision =
 811                 (struct usb_usbvision *) video_get_drvdata(dev);
 812         int ret;
 813
 814         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 815
 816         /* Check input validity:
 817            the user must do a VIDEO CAPTURE and MMAP method. */
 818         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 819            (vr->memory != V4L2_MEMORY_MMAP))
 820                 return -EINVAL;
 821
 822         if(usbvision->streaming == Stream_On) {
 823                 if ((ret = usbvision_stream_interrupt(usbvision)))
 824                         return ret;
 825         }
 826
 827         usbvision_frames_free(usbvision);
 828         usbvision_empty_framequeues(usbvision);
 829         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 830
 831         usbvision->curFrame = NULL;
 832
 833         return 0;
 834 }
 835
 836 static int vidioc_querybuf (struct file *file,
 837                             void *priv, struct v4l2_buffer *vb)
 838 {
 839         struct video_device *dev = video_devdata(file);
 840         struct usb_usbvision *usbvision =
 841                 (struct usb_usbvision *) video_get_drvdata(dev);
 842         struct usbvision_frame *frame;
 843
 844         /* FIXME : must control
 845            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 846         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 847                 return -EINVAL;
 848         }
 849         if(vb->index>=usbvision->num_frames)  {
 850                 return -EINVAL;
 851         }
 852         /* Updating the corresponding frame state */
 853         vb->flags = 0;
 854         frame = &usbvision->frame[vb->index];
 855         if(frame->grabstate >= FrameState_Ready)
 856                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 857         if(frame->grabstate >= FrameState_Done)
 858                 vb->flags |= V4L2_BUF_FLAG_DONE;
 859         if(frame->grabstate == FrameState_Unused)
 860                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 861         vb->memory = V4L2_MEMORY_MMAP;
 862
 863         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 864
 865         vb->memory = V4L2_MEMORY_MMAP;
 866         vb->field = V4L2_FIELD_NONE;
 867         vb->length = usbvision->curwidth*
 868                 usbvision->curheight*
 869                 usbvision->palette.bytes_per_pixel;
 870         vb->timestamp = usbvision->frame[vb->index].timestamp;
 871         vb->sequence = usbvision->frame[vb->index].sequence;
 872         return 0;
 873 }
 874
 875 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 876 {
 877         struct video_device *dev = video_devdata(file);
 878         struct usb_usbvision *usbvision =
 879                 (struct usb_usbvision *) video_get_drvdata(dev);
 880         struct usbvision_frame *frame;
 881         unsigned long lock_flags;
 882
 883         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 884         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 885                 return -EINVAL;
 886         }
 887         if(vb->index>=usbvision->num_frames)  {
 888                 return -EINVAL;
 889         }
 890
 891         frame = &usbvision->frame[vb->index];
 892
 893         if (frame->grabstate != FrameState_Unused) {
 894                 return -EAGAIN;
 895         }
 896
 897         /* Mark it as ready and enqueue frame */
 898         frame->grabstate = FrameState_Ready;
 899         frame->scanstate = ScanState_Scanning;
 900         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 901
 902         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 903
 904         /* set v4l2_format index */
 905         frame->v4l2_format = usbvision->palette;
 906
 907         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 908         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 909         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 910
 911         return 0;
 912 }
 913
 914 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 915 {
 916         struct video_device *dev = video_devdata(file);
 917         struct usb_usbvision *usbvision =
 918                 (struct usb_usbvision *) video_get_drvdata(dev);
 919         int ret;
 920         struct usbvision_frame *f;
 921         unsigned long lock_flags;
 922
 923         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 924                 return -EINVAL;
 925
 926         if (list_empty(&(usbvision->outqueue))) {
 927                 if (usbvision->streaming == Stream_Idle)
 928                         return -EINVAL;
 929                 ret = wait_event_interruptible
 930                         (usbvision->wait_frame,
 931                          !list_empty(&(usbvision->outqueue)));
 932                 if (ret)
 933                         return ret;
 934         }
 935
 936         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 937         f = list_entry(usbvision->outqueue.next,
 938                        struct usbvision_frame, frame);
 939         list_del(usbvision->outqueue.next);
 940         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 941
 942         f->grabstate = FrameState_Unused;
 943
 944         vb->memory = V4L2_MEMORY_MMAP;
 945         vb->flags = V4L2_BUF_FLAG_MAPPED |
 946                 V4L2_BUF_FLAG_QUEUED |
 947                 V4L2_BUF_FLAG_DONE;
 948         vb->index = f->index;
 949         vb->sequence = f->sequence;
 950         vb->timestamp = f->timestamp;
 951         vb->field = V4L2_FIELD_NONE;
 952         vb->bytesused = f->scanlength;
 953
 954         return 0;
 955 }
 956
 957 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 958 {
 959         struct video_device *dev = video_devdata(file);
 960         struct usb_usbvision *usbvision =
 961                 (struct usb_usbvision *) video_get_drvdata(dev);
 962         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 963
 964         usbvision->streaming = Stream_On;
 965         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 966
 967         return 0;
 968 }
 969
 970 static int vidioc_streamoff(struct file *file,
 971                             void *priv, enum v4l2_buf_type type)
 972 {
 973         struct video_device *dev = video_devdata(file);
 974         struct usb_usbvision *usbvision =
 975                 (struct usb_usbvision *) video_get_drvdata(dev);
 976         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 977
 978         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 979                 return -EINVAL;
 980
 981         if(usbvision->streaming == Stream_On) {
 982                 usbvision_stream_interrupt(usbvision);
 983                 /* Stop all video streamings */
 984                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 985         }
 986         usbvision_empty_framequeues(usbvision);
 987
 988         return 0;
 989 }
 990
 991 static int vidioc_enum_fmt_cap (struct file *file, void  *priv,
 992                                         struct v4l2_fmtdesc *vfd)
 993 {
 994         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 995                 return -EINVAL;
 996         }
 997         vfd->flags = 0;
 998         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 999         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
1000         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
1001         memset(vfd->reserved, 0, sizeof(vfd->reserved));
1002         return 0;
1003 }
1004
1005 static int vidioc_g_fmt_cap (struct file *file, void *priv,
1006                                         struct v4l2_format *vf)
1007 {
1008         struct video_device *dev = video_devdata(file);
1009         struct usb_usbvision *usbvision =
1010                 (struct usb_usbvision *) video_get_drvdata(dev);
1011         vf->fmt.pix.width = usbvision->curwidth;
1012         vf->fmt.pix.height = usbvision->curheight;
1013         vf->fmt.pix.pixelformat = usbvision->palette.format;
1014         vf->fmt.pix.bytesperline =
1015                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
1016         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
1017         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1018         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
1019
1020         return 0;
1021 }
1022
1023 static int vidioc_try_fmt_cap (struct file *file, void *priv,
1024                                struct v4l2_format *vf)
1025 {
1026         struct video_device *dev = video_devdata(file);
1027         struct usb_usbvision *usbvision =
1028                 (struct usb_usbvision *) video_get_drvdata(dev);
1029         int formatIdx;
1030
1031         /* Find requested format in available ones */
1032         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1033                 if(vf->fmt.pix.pixelformat ==
1034                    usbvision_v4l2_format[formatIdx].format) {
1035                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1036                         break;
1037                 }
1038         }
1039         /* robustness */
1040         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1041                 return -EINVAL;
1042         }
1043         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1044         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1045
1046         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
1047                 usbvision->palette.bytes_per_pixel;
1048         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1049
1050         return 0;
1051 }
1052
1053 static int vidioc_s_fmt_cap(struct file *file, void *priv,
1054                                struct v4l2_format *vf)
1055 {
1056         struct video_device *dev = video_devdata(file);
1057         struct usb_usbvision *usbvision =
1058                 (struct usb_usbvision *) video_get_drvdata(dev);
1059         int ret;
1060
1061         if( 0 != (ret=vidioc_try_fmt_cap (file, priv, vf)) ) {
1062                 return ret;
1063         }
1064
1065         /* stop io in case it is already in progress */
1066         if(usbvision->streaming == Stream_On) {
1067                 if ((ret = usbvision_stream_interrupt(usbvision)))
1068                         return ret;
1069         }
1070         usbvision_frames_free(usbvision);
1071         usbvision_empty_framequeues(usbvision);
1072
1073         usbvision->curFrame = NULL;
1074
1075         /* by now we are committed to the new data... */
1076         down(&usbvision->lock);
1077         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1078         up(&usbvision->lock);
1079
1080         return 0;
1081 }
1082
1083 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1084                       size_t count, loff_t *ppos)
1085 {
1086         struct video_device *dev = video_devdata(file);
1087         struct usb_usbvision *usbvision =
1088                 (struct usb_usbvision *) video_get_drvdata(dev);
1089         int noblock = file->f_flags & O_NONBLOCK;
1090         unsigned long lock_flags;
1091
1092         int ret,i;
1093         struct usbvision_frame *frame;
1094
1095         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__,
1096                (unsigned long)count, noblock);
1097
1098         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1099                 return -EFAULT;
1100
1101         /* This entry point is compatible with the mmap routines
1102            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1103            to get frames or call read on the device. */
1104         if(!usbvision->num_frames) {
1105                 /* First, allocate some frames to work with
1106                    if this has not been done with VIDIOC_REQBUF */
1107                 usbvision_frames_free(usbvision);
1108                 usbvision_empty_framequeues(usbvision);
1109                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1110         }
1111
1112         if(usbvision->streaming != Stream_On) {
1113                 /* no stream is running, make it running ! */
1114                 usbvision->streaming = Stream_On;
1115                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1116         }
1117
1118         /* Then, enqueue as many frames as possible
1119            (like a user of VIDIOC_QBUF would do) */
1120         for(i=0;i<usbvision->num_frames;i++) {
1121                 frame = &usbvision->frame[i];
1122                 if(frame->grabstate == FrameState_Unused) {
1123                         /* Mark it as ready and enqueue frame */
1124                         frame->grabstate = FrameState_Ready;
1125                         frame->scanstate = ScanState_Scanning;
1126                         /* Accumulated in usbvision_parse_data() */
1127                         frame->scanlength = 0;
1128
1129                         /* set v4l2_format index */
1130                         frame->v4l2_format = usbvision->palette;
1131
1132                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1133                         list_add_tail(&frame->frame, &usbvision->inqueue);
1134                         spin_unlock_irqrestore(&usbvision->queue_lock,
1135                                                lock_flags);
1136                 }
1137         }
1138
1139         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1140         if (list_empty(&(usbvision->outqueue))) {
1141                 if(noblock)
1142                         return -EAGAIN;
1143
1144                 ret = wait_event_interruptible
1145                         (usbvision->wait_frame,
1146                          !list_empty(&(usbvision->outqueue)));
1147                 if (ret)
1148                         return ret;
1149         }
1150
1151         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1152         frame = list_entry(usbvision->outqueue.next,
1153                            struct usbvision_frame, frame);
1154         list_del(usbvision->outqueue.next);
1155         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1156
1157         /* An error returns an empty frame */
1158         if (frame->grabstate == FrameState_Error) {
1159                 frame->bytes_read = 0;
1160                 return 0;
1161         }
1162
1163         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1164                __FUNCTION__,
1165                frame->index, frame->bytes_read, frame->scanlength);
1166
1167         /* copy bytes to user space; we allow for partials reads */
1168         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1169                 count = frame->scanlength - frame->bytes_read;
1170
1171         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1172                 return -EFAULT;
1173         }
1174
1175         frame->bytes_read += count;
1176         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1177                __FUNCTION__,
1178                (unsigned long)count, frame->bytes_read);
1179
1180         /* For now, forget the frame if it has not been read in one shot. */
1181 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1182                 frame->bytes_read = 0;
1183
1184                 /* Mark it as available to be used again. */
1185                 frame->grabstate = FrameState_Unused;
1186 /*      } */
1187
1188         return count;
1189 }
1190
1191 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1192 {
1193         unsigned long size = vma->vm_end - vma->vm_start,
1194                 start = vma->vm_start;
1195         void *pos;
1196         u32 i;
1197
1198         struct video_device *dev = video_devdata(file);
1199         struct usb_usbvision *usbvision =
1200                 (struct usb_usbvision *) video_get_drvdata(dev);
1201
1202         PDEBUG(DBG_MMAP, "mmap");
1203
1204         down(&usbvision->lock);
1205
1206         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1207                 up(&usbvision->lock);
1208                 return -EFAULT;
1209         }
1210
1211         if (!(vma->vm_flags & VM_WRITE) ||
1212             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1213                 up(&usbvision->lock);
1214                 return -EINVAL;
1215         }
1216
1217         for (i = 0; i < usbvision->num_frames; i++) {
1218                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1219                     vma->vm_pgoff)
1220                         break;
1221         }
1222         if (i == usbvision->num_frames) {
1223                 PDEBUG(DBG_MMAP,
1224                        "mmap: user supplied mapping address is out of range");
1225                 up(&usbvision->lock);
1226                 return -EINVAL;
1227         }
1228
1229         /* VM_IO is eventually going to replace PageReserved altogether */
1230         vma->vm_flags |= VM_IO;
1231         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1232
1233         pos = usbvision->frame[i].data;
1234         while (size > 0) {
1235
1236                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1237                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1238                         up(&usbvision->lock);
1239                         return -EAGAIN;
1240                 }
1241                 start += PAGE_SIZE;
1242                 pos += PAGE_SIZE;
1243                 size -= PAGE_SIZE;
1244         }
1245
1246         up(&usbvision->lock);
1247         return 0;
1248 }
1249
1250
1251 /*
1252  * Here comes the stuff for radio on usbvision based devices
1253  *
1254  */
1255 static int usbvision_radio_open(struct inode *inode, struct file *file)
1256 {
1257         struct video_device *dev = video_devdata(file);
1258         struct usb_usbvision *usbvision =
1259                 (struct usb_usbvision *) video_get_drvdata(dev);
1260         int errCode = 0;
1261
1262         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1263
1264         down(&usbvision->lock);
1265
1266         if (usbvision->user) {
1267                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1268                 errCode = -EBUSY;
1269         }
1270         else {
1271                 if(PowerOnAtOpen) {
1272                         usbvision_reset_powerOffTimer(usbvision);
1273                         if (usbvision->power == 0) {
1274                                 usbvision_power_on(usbvision);
1275                                 usbvision_i2c_register(usbvision);
1276                         }
1277                 }
1278
1279                 /* Alternate interface 1 is is the biggest frame size */
1280                 errCode = usbvision_set_alternate(usbvision);
1281                 if (errCode < 0) {
1282                         usbvision->last_error = errCode;
1283                         return -EBUSY;
1284                 }
1285
1286                 // If so far no errors then we shall start the radio
1287                 usbvision->radio = 1;
1288                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1289                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1290                 usbvision->user++;
1291         }
1292
1293         if (errCode) {
1294                 if (PowerOnAtOpen) {
1295                         usbvision_i2c_unregister(usbvision);
1296                         usbvision_power_off(usbvision);
1297                         usbvision->initialized = 0;
1298                 }
1299         }
1300         up(&usbvision->lock);
1301         return errCode;
1302 }
1303
1304
1305 static int usbvision_radio_close(struct inode *inode, struct file *file)
1306 {
1307         struct video_device *dev = video_devdata(file);
1308         struct usb_usbvision *usbvision =
1309                 (struct usb_usbvision *) video_get_drvdata(dev);
1310         int errCode = 0;
1311
1312         PDEBUG(DBG_IO, "");
1313
1314         down(&usbvision->lock);
1315
1316         /* Set packet size to 0 */
1317         usbvision->ifaceAlt=0;
1318         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1319                                     usbvision->ifaceAlt);
1320
1321         usbvision_audio_off(usbvision);
1322         usbvision->radio=0;
1323         usbvision->user--;
1324
1325         if (PowerOnAtOpen) {
1326                 usbvision_set_powerOffTimer(usbvision);
1327                 usbvision->initialized = 0;
1328         }
1329
1330         up(&usbvision->lock);
1331
1332         if (usbvision->remove_pending) {
1333                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
1334                 usbvision_release(usbvision);
1335         }
1336
1337
1338         PDEBUG(DBG_IO, "success");
1339
1340         return errCode;
1341 }
1342
1343 /*
1344  * Here comes the stuff for vbi on usbvision based devices
1345  *
1346  */
1347 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1348 {
1349         /* TODO */
1350         return -ENODEV;
1351
1352 }
1353
1354 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1355 {
1356         /* TODO */
1357         return -ENODEV;
1358 }
1359
1360 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1361                                  unsigned int cmd, void *arg)
1362 {
1363         /* TODO */
1364         return -ENOIOCTLCMD;
1365 }
1366
1367 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1368                        unsigned int cmd, unsigned long arg)
1369 {
1370         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1371 }
1372
1373
1374 //
1375 // Video registration stuff
1376 //
1377
1378 // Video template
1379 static const struct file_operations usbvision_fops = {
1380         .owner             = THIS_MODULE,
1381         .open           = usbvision_v4l2_open,
1382         .release        = usbvision_v4l2_close,
1383         .read           = usbvision_v4l2_read,
1384         .mmap           = usbvision_v4l2_mmap,
1385         .ioctl          = video_ioctl2,
1386         .llseek         = no_llseek,
1387 /*      .poll          = video_poll, */
1388         .mmap          = usbvision_v4l2_mmap,
1389         .compat_ioctl  = v4l_compat_ioctl32,
1390 };
1391 static struct video_device usbvision_video_template = {
1392         .owner             = THIS_MODULE,
1393         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1394         .hardware       = VID_HARDWARE_USBVISION,
1395         .fops           = &usbvision_fops,
1396         .name           = "usbvision-video",
1397         .release        = video_device_release,
1398         .minor          = -1,
1399         .vidioc_querycap      = vidioc_querycap,
1400         .vidioc_enum_fmt_cap  = vidioc_enum_fmt_cap,
1401         .vidioc_g_fmt_cap     = vidioc_g_fmt_cap,
1402         .vidioc_try_fmt_cap   = vidioc_try_fmt_cap,
1403         .vidioc_s_fmt_cap     = vidioc_s_fmt_cap,
1404         .vidioc_reqbufs       = vidioc_reqbufs,
1405         .vidioc_querybuf      = vidioc_querybuf,
1406         .vidioc_qbuf          = vidioc_qbuf,
1407         .vidioc_dqbuf         = vidioc_dqbuf,
1408         .vidioc_s_std         = vidioc_s_std,
1409         .vidioc_enum_input    = vidioc_enum_input,
1410         .vidioc_g_input       = vidioc_g_input,
1411         .vidioc_s_input       = vidioc_s_input,
1412         .vidioc_queryctrl     = vidioc_queryctrl,
1413         .vidioc_g_audio       = vidioc_g_audio,
1414         .vidioc_g_audio       = vidioc_s_audio,
1415         .vidioc_g_ctrl        = vidioc_g_ctrl,
1416         .vidioc_s_ctrl        = vidioc_s_ctrl,
1417         .vidioc_streamon      = vidioc_streamon,
1418         .vidioc_streamoff     = vidioc_streamoff,
1419 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1420 /*      .vidiocgmbuf          = vidiocgmbuf, */
1421 #endif
1422         .vidioc_g_tuner       = vidioc_g_tuner,
1423         .vidioc_s_tuner       = vidioc_s_tuner,
1424         .vidioc_g_frequency   = vidioc_g_frequency,
1425         .vidioc_s_frequency   = vidioc_s_frequency,
1426 #ifdef CONFIG_VIDEO_ADV_DEBUG
1427         .vidioc_g_register    = vidioc_g_register,
1428         .vidioc_s_register    = vidioc_s_register,
1429 #endif
1430         .tvnorms              = USBVISION_NORMS,
1431         .current_norm         = V4L2_STD_PAL
1432 };
1433
1434
1435 // Radio template
1436 static const struct file_operations usbvision_radio_fops = {
1437         .owner             = THIS_MODULE,
1438         .open           = usbvision_radio_open,
1439         .release        = usbvision_radio_close,
1440         .ioctl          = video_ioctl2,
1441         .llseek         = no_llseek,
1442         .compat_ioctl  = v4l_compat_ioctl32,
1443 };
1444
1445 static struct video_device usbvision_radio_template=
1446 {
1447         .owner             = THIS_MODULE,
1448         .type           = VID_TYPE_TUNER,
1449         .hardware       = VID_HARDWARE_USBVISION,
1450         .fops           = &usbvision_radio_fops,
1451         .name           = "usbvision-radio",
1452         .release        = video_device_release,
1453         .minor          = -1,
1454         .vidioc_querycap      = vidioc_querycap,
1455         .vidioc_enum_input    = vidioc_enum_input,
1456         .vidioc_g_input       = vidioc_g_input,
1457         .vidioc_s_input       = vidioc_s_input,
1458         .vidioc_queryctrl     = vidioc_queryctrl,
1459         .vidioc_g_audio       = vidioc_g_audio,
1460         .vidioc_g_audio       = vidioc_s_audio,
1461         .vidioc_g_ctrl        = vidioc_g_ctrl,
1462         .vidioc_s_ctrl        = vidioc_s_ctrl,
1463         .vidioc_g_tuner       = vidioc_g_tuner,
1464         .vidioc_s_tuner       = vidioc_s_tuner,
1465         .vidioc_g_frequency   = vidioc_g_frequency,
1466         .vidioc_s_frequency   = vidioc_s_frequency,
1467
1468         .tvnorms              = USBVISION_NORMS,
1469         .current_norm         = V4L2_STD_PAL
1470 };
1471
1472 // vbi template
1473 static const struct file_operations usbvision_vbi_fops = {
1474         .owner             = THIS_MODULE,
1475         .open           = usbvision_vbi_open,
1476         .release        = usbvision_vbi_close,
1477         .ioctl          = usbvision_vbi_ioctl,
1478         .llseek         = no_llseek,
1479         .compat_ioctl  = v4l_compat_ioctl32,
1480 };
1481
1482 static struct video_device usbvision_vbi_template=
1483 {
1484         .owner             = THIS_MODULE,
1485         .type           = VID_TYPE_TUNER,
1486         .hardware       = VID_HARDWARE_USBVISION,
1487         .fops           = &usbvision_vbi_fops,
1488         .release        = video_device_release,
1489         .name           = "usbvision-vbi",
1490         .minor          = -1,
1491 };
1492
1493
1494 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1495                                         struct video_device *vdev_template,
1496                                         char *name)
1497 {
1498         struct usb_device *usb_dev = usbvision->dev;
1499         struct video_device *vdev;
1500
1501         if (usb_dev == NULL) {
1502                 err("%s: usbvision->dev is not set", __FUNCTION__);
1503                 return NULL;
1504         }
1505
1506         vdev = video_device_alloc();
1507         if (NULL == vdev) {
1508                 return NULL;
1509         }
1510         *vdev = *vdev_template;
1511 //      vdev->minor   = -1;
1512         vdev->dev     = &usb_dev->dev;
1513         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1514         video_set_drvdata(vdev, usbvision);
1515         return vdev;
1516 }
1517
1518 // unregister video4linux devices
1519 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1520 {
1521         // vbi Device:
1522         if (usbvision->vbi) {
1523                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1524                        usbvision->vbi->minor & 0x1f);
1525                 if (usbvision->vbi->minor != -1) {
1526                         video_unregister_device(usbvision->vbi);
1527                 } else {
1528                         video_device_release(usbvision->vbi);
1529                 }
1530                 usbvision->vbi = NULL;
1531         }
1532
1533         // Radio Device:
1534         if (usbvision->rdev) {
1535                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1536                        usbvision->rdev->minor & 0x1f);
1537                 if (usbvision->rdev->minor != -1) {
1538                         video_unregister_device(usbvision->rdev);
1539                 } else {
1540                         video_device_release(usbvision->rdev);
1541                 }
1542                 usbvision->rdev = NULL;
1543         }
1544
1545         // Video Device:
1546         if (usbvision->vdev) {
1547                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1548                        usbvision->vdev->minor & 0x1f);
1549                 if (usbvision->vdev->minor != -1) {
1550                         video_unregister_device(usbvision->vdev);
1551                 } else {
1552                         video_device_release(usbvision->vdev);
1553                 }
1554                 usbvision->vdev = NULL;
1555         }
1556 }
1557
1558 // register video4linux devices
1559 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1560 {
1561         // Video Device:
1562         usbvision->vdev = usbvision_vdev_init(usbvision,
1563                                               &usbvision_video_template,
1564                                               "USBVision Video");
1565         if (usbvision->vdev == NULL) {
1566                 goto err_exit;
1567         }
1568         if (video_register_device(usbvision->vdev,
1569                                   VFL_TYPE_GRABBER,
1570                                   video_nr)<0) {
1571                 goto err_exit;
1572         }
1573         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1574                usbvision->nr,usbvision->vdev->minor & 0x1f);
1575
1576         // Radio Device:
1577         if (usbvision_device_data[usbvision->DevModel].Radio) {
1578                 // usbvision has radio
1579                 usbvision->rdev = usbvision_vdev_init(usbvision,
1580                                                       &usbvision_radio_template,
1581                                                       "USBVision Radio");
1582                 if (usbvision->rdev == NULL) {
1583                         goto err_exit;
1584                 }
1585                 if (video_register_device(usbvision->rdev,
1586                                           VFL_TYPE_RADIO,
1587                                           radio_nr)<0) {
1588                         goto err_exit;
1589                 }
1590                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1591                        usbvision->nr, usbvision->rdev->minor & 0x1f);
1592         }
1593         // vbi Device:
1594         if (usbvision_device_data[usbvision->DevModel].vbi) {
1595                 usbvision->vbi = usbvision_vdev_init(usbvision,
1596                                                      &usbvision_vbi_template,
1597                                                      "USBVision VBI");
1598                 if (usbvision->vdev == NULL) {
1599                         goto err_exit;
1600                 }
1601                 if (video_register_device(usbvision->vbi,
1602                                           VFL_TYPE_VBI,
1603                                           vbi_nr)<0) {
1604                         goto err_exit;
1605                 }
1606                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1607                        usbvision->nr,usbvision->vbi->minor & 0x1f);
1608         }
1609         // all done
1610         return 0;
1611
1612  err_exit:
1613         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1614         usbvision_unregister_video(usbvision);
1615         return -1;
1616 }
1617
1618 /*
1619  * usbvision_alloc()
1620  *
1621  * This code allocates the struct usb_usbvision.
1622  * It is filled with default values.
1623  *
1624  * Returns NULL on error, a pointer to usb_usbvision else.
1625  *
1626  */
1627 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1628 {
1629         struct usb_usbvision *usbvision;
1630
1631         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1632             NULL) {
1633                 goto err_exit;
1634         }
1635
1636         usbvision->dev = dev;
1637
1638         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1639
1640         // prepare control urb for control messages during interrupts
1641         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1642         if (usbvision->ctrlUrb == NULL) {
1643                 goto err_exit;
1644         }
1645         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1646         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1647
1648         usbvision_init_powerOffTimer(usbvision);
1649
1650         return usbvision;
1651
1652 err_exit:
1653         if (usbvision && usbvision->ctrlUrb) {
1654                 usb_free_urb(usbvision->ctrlUrb);
1655         }
1656         if (usbvision) {
1657                 kfree(usbvision);
1658         }
1659         return NULL;
1660 }
1661
1662 /*
1663  * usbvision_release()
1664  *
1665  * This code does final release of struct usb_usbvision. This happens
1666  * after the device is disconnected -and- all clients closed their files.
1667  *
1668  */
1669 static void usbvision_release(struct usb_usbvision *usbvision)
1670 {
1671         PDEBUG(DBG_PROBE, "");
1672
1673         down(&usbvision->lock);
1674
1675         usbvision_reset_powerOffTimer(usbvision);
1676
1677         usbvision->initialized = 0;
1678
1679         up(&usbvision->lock);
1680
1681         usbvision_remove_sysfs(usbvision->vdev);
1682         usbvision_unregister_video(usbvision);
1683
1684         if (usbvision->ctrlUrb) {
1685                 usb_free_urb(usbvision->ctrlUrb);
1686         }
1687
1688         kfree(usbvision);
1689
1690         PDEBUG(DBG_PROBE, "success");
1691 }
1692
1693
1694 /*********************** usb interface **********************************/
1695
1696 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1697 {
1698         int model;
1699
1700         if (usbvision == NULL)
1701                 return;
1702
1703         model = usbvision->DevModel;
1704         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1705
1706         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1707                 usbvision->Vin_Reg2_Preset =
1708                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1709         } else {
1710                 usbvision->Vin_Reg2_Preset = 0;
1711         }
1712
1713         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1714
1715         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1716         usbvision->ctl_input = 0;
1717
1718         /* This should be here to make i2c clients to be able to register */
1719         /* first switch off audio */
1720         usbvision_audio_off(usbvision);
1721         if (!PowerOnAtOpen) {
1722                 /* and then power up the noisy tuner */
1723                 usbvision_power_on(usbvision);
1724                 usbvision_i2c_register(usbvision);
1725         }
1726 }
1727
1728 /*
1729  * usbvision_probe()
1730  *
1731  * This procedure queries device descriptor and accepts the interface
1732  * if it looks like USBVISION video device
1733  *
1734  */
1735 static int __devinit usbvision_probe(struct usb_interface *intf,
1736                                      const struct usb_device_id *devid)
1737 {
1738         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1739         struct usb_interface *uif;
1740         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1741         const struct usb_host_interface *interface;
1742         struct usb_usbvision *usbvision = NULL;
1743         const struct usb_endpoint_descriptor *endpoint;
1744         int model,i;
1745
1746         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1747                                 dev->descriptor.idVendor,
1748                                 dev->descriptor.idProduct, ifnum);
1749
1750         model = devid->driver_info;
1751         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1752                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1753                 return -ENODEV;
1754         }
1755         printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1756                                 usbvision_device_data[model].ModelString);
1757
1758         if (usbvision_device_data[model].Interface >= 0) {
1759                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1760         } else {
1761                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1762         }
1763         endpoint = &interface->endpoint[1].desc;
1764         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1765             USB_ENDPOINT_XFER_ISOC) {
1766                 err("%s: interface %d. has non-ISO endpoint!",
1767                     __FUNCTION__, ifnum);
1768                 err("%s: Endpoint attributes %d",
1769                     __FUNCTION__, endpoint->bmAttributes);
1770                 return -ENODEV;
1771         }
1772         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1773             USB_DIR_OUT) {
1774                 err("%s: interface %d. has ISO OUT endpoint!",
1775                     __FUNCTION__, ifnum);
1776                 return -ENODEV;
1777         }
1778
1779         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1780                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1781                 return -ENOMEM;
1782         }
1783
1784         if (dev->descriptor.bNumConfigurations > 1) {
1785                 usbvision->bridgeType = BRIDGE_NT1004;
1786         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1787                 usbvision->bridgeType = BRIDGE_NT1005;
1788         } else {
1789                 usbvision->bridgeType = BRIDGE_NT1003;
1790         }
1791         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1792
1793         down(&usbvision->lock);
1794
1795         /* compute alternate max packet sizes */
1796         uif = dev->actconfig->interface[0];
1797
1798         usbvision->num_alt=uif->num_altsetting;
1799         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1800         usbvision->alt_max_pkt_size = kmalloc(32*
1801                                               usbvision->num_alt,GFP_KERNEL);
1802         if (usbvision->alt_max_pkt_size == NULL) {
1803                 err("usbvision: out of memory!\n");
1804                 return -ENOMEM;
1805         }
1806
1807         for (i = 0; i < usbvision->num_alt ; i++) {
1808                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1809                                       wMaxPacketSize);
1810                 usbvision->alt_max_pkt_size[i] =
1811                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1812                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1813                        usbvision->alt_max_pkt_size[i]);
1814         }
1815
1816
1817         usbvision->nr = usbvision_nr++;
1818
1819         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1820         if (usbvision->have_tuner) {
1821                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1822         }
1823
1824         usbvision->tuner_addr = ADDR_UNSET;
1825
1826         usbvision->DevModel = model;
1827         usbvision->remove_pending = 0;
1828         usbvision->iface = ifnum;
1829         usbvision->ifaceAlt = 0;
1830         usbvision->video_endp = endpoint->bEndpointAddress;
1831         usbvision->isocPacketSize = 0;
1832         usbvision->usb_bandwidth = 0;
1833         usbvision->user = 0;
1834         usbvision->streaming = Stream_Off;
1835         usbvision_register_video(usbvision);
1836         usbvision_configure_video(usbvision);
1837         up(&usbvision->lock);
1838
1839
1840         usb_set_intfdata (intf, usbvision);
1841         usbvision_create_sysfs(usbvision->vdev);
1842
1843         PDEBUG(DBG_PROBE, "success");
1844         return 0;
1845 }
1846
1847
1848 /*
1849  * usbvision_disconnect()
1850  *
1851  * This procedure stops all driver activity, deallocates interface-private
1852  * structure (pointed by 'ptr') and after that driver should be removable
1853  * with no ill consequences.
1854  *
1855  */
1856 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1857 {
1858         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1859
1860         PDEBUG(DBG_PROBE, "");
1861
1862         if (usbvision == NULL) {
1863                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1864                 return;
1865         }
1866         usb_set_intfdata (intf, NULL);
1867
1868         down(&usbvision->lock);
1869
1870         // At this time we ask to cancel outstanding URBs
1871         usbvision_stop_isoc(usbvision);
1872
1873         if (usbvision->power) {
1874                 usbvision_i2c_unregister(usbvision);
1875                 usbvision_power_off(usbvision);
1876         }
1877         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1878
1879         usb_put_dev(usbvision->dev);
1880         usbvision->dev = NULL;  // USB device is no more
1881
1882         up(&usbvision->lock);
1883
1884         if (usbvision->user) {
1885                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1886                        __FUNCTION__);
1887                 wake_up_interruptible(&usbvision->wait_frame);
1888                 wake_up_interruptible(&usbvision->wait_stream);
1889         } else {
1890                 usbvision_release(usbvision);
1891         }
1892
1893         PDEBUG(DBG_PROBE, "success");
1894
1895 }
1896
1897 static struct usb_driver usbvision_driver = {
1898         .name           = "usbvision",
1899         .id_table       = usbvision_table,
1900         .probe          = usbvision_probe,
1901         .disconnect     = usbvision_disconnect
1902 };
1903
1904 /*
1905  * usbvision_init()
1906  *
1907  * This code is run to initialize the driver.
1908  *
1909  */
1910 static int __init usbvision_init(void)
1911 {
1912         int errCode;
1913
1914         PDEBUG(DBG_PROBE, "");
1915
1916         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1917         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1918         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1919
1920         /* disable planar mode support unless compression enabled */
1921         if (isocMode != ISOC_MODE_COMPRESS ) {
1922                 // FIXME : not the right way to set supported flag
1923                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1924                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1925         }
1926
1927         errCode = usb_register(&usbvision_driver);
1928
1929         if (errCode == 0) {
1930                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1931                 PDEBUG(DBG_PROBE, "success");
1932         }
1933         return errCode;
1934 }
1935
1936 static void __exit usbvision_exit(void)
1937 {
1938  PDEBUG(DBG_PROBE, "");
1939
1940  usb_deregister(&usbvision_driver);
1941  PDEBUG(DBG_PROBE, "success");
1942 }
1943
1944 module_init(usbvision_init);
1945 module_exit(usbvision_exit);
1946
1947 /*
1948  * Overrides for Emacs so that we follow Linus's tabbing style.
1949  * ---------------------------------------------------------------------------
1950  * Local variables:
1951  * c-basic-offset: 8
1952  * End:
1953  */