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.  Seems impossible, needs a codec interface.  Which one?
  40  *     - Clean up the driver.
  41  *     - optimization for performance.
  42  *     - Add Videotext capability (VBI).  Working on it.....
  43  *     - Check audio for other devices
  44  *
  45  */
  46
  47 #include <linux/kernel.h>
  48 #include <linux/sched.h>
  49 #include <linux/list.h>
  50 #include <linux/timer.h>
  51 #include <linux/slab.h>
  52 #include <linux/mm.h>
  53 #include <linux/utsname.h>
  54 #include <linux/highmem.h>
  55 #include <linux/smp_lock.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
  80 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, Dwaine Garden <DwaineGarden@rogers.com>"
  81 #define DRIVER_NAME "usbvision"
  82 #define DRIVER_ALIAS "USBVision"
  83 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  84 #define DRIVER_LICENSE "GPL"
  85 #define USBVISION_DRIVER_VERSION_MAJOR 0
  86 #define USBVISION_DRIVER_VERSION_MINOR 9
  87 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  88 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
  89 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  90
  91 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  92
  93
  94 #define USBVISION_DEBUG         /* Turn on debug messages */
  95
  96 #ifdef USBVISION_DEBUG
  97         #define PDEBUG(level, fmt, args...) \
  98                 if (video_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
  99 #else
 100         #define PDEBUG(level, fmt, args...) do {} while(0)
 101 #endif
 102
 103 #define DBG_IOCTL       1<<0
 104 #define DBG_IO          1<<1
 105 #define DBG_PROBE       1<<2
 106 #define DBG_FUNC        1<<3
 107
 108 //String operations
 109 #define rmspace(str)    while(*str==' ') str++;
 110 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 111
 112
 113 static int usbvision_nr = 0;                    // sequential number of usbvision device
 114
 115 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 116         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 117         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 118         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 119         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 120         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 121         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 122         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 123         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 124 };
 125
 126 /* supported tv norms */
 127 static struct usbvision_tvnorm tvnorms[] = {
 128         {
 129                 .name = "PAL",
 130                 .id = V4L2_STD_PAL,
 131         }, {
 132                 .name = "NTSC",
 133                 .id = V4L2_STD_NTSC,
 134         }, {
 135                  .name = "SECAM",
 136                  .id = V4L2_STD_SECAM,
 137         }, {
 138                 .name = "PAL-M",
 139                 .id = V4L2_STD_PAL_M,
 140         }
 141 };
 142
 143 #define TVNORMS ARRAY_SIZE(tvnorms)
 144
 145 // Function prototypes
 146 static void usbvision_release(struct usb_usbvision *usbvision);
 147
 148 // Default initalization of device driver parameters
 149 static int isocMode = ISOC_MODE_COMPRESS;               // Set the default format for ISOC endpoint
 150 static int video_debug = 0;                             // Set the default Debug Mode of the device driver
 151 static int PowerOnAtOpen = 1;                           // Set the default device to power on at startup
 152 static int video_nr = -1;                               // Sequential Number of Video Device
 153 static int radio_nr = -1;                               // Sequential Number of Radio Device
 154 static int vbi_nr = -1;                                 // Sequential Number of VBI Device
 155 static char *CustomDevice=NULL;                         // Set as nothing....
 156
 157 // Grab parameters for the device driver
 158
 159 #if defined(module_param)                               // Showing parameters under SYSFS
 160 module_param(isocMode, int, 0444);
 161 module_param(video_debug, int, 0444);
 162 module_param(PowerOnAtOpen, int, 0444);
 163 module_param(video_nr, int, 0444);
 164 module_param(radio_nr, int, 0444);
 165 module_param(vbi_nr, int, 0444);
 166 module_param(CustomDevice, charp, 0444);
 167 #else                                                   // Old Style
 168 MODULE_PARAM(isocMode, "i");
 169 MODULE_PARM(video_debug, "i");                          // Grab the Debug Mode of the device driver
 170 MODULE_PARM(adjustCompression, "i");                    // Grab the compression to be adaptive
 171 MODULE_PARM(PowerOnAtOpen, "i");                        // Grab the device to power on at startup
 172 MODULE_PARM(SwitchSVideoInput, "i");                    // To help people with Black and White output with using s-video input.  Some cables and input device are wired differently.
 173 MODULE_PARM(video_nr, "i");                             // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
 174 MODULE_PARM(radio_nr, "i");                             // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
 175 MODULE_PARM(vbi_nr, "i");                               // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
 176 MODULE_PARM(CustomDevice, "s");                         // .... CustomDevice
 177 #endif
 178
 179 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 180 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 181 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 182 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 183 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 184 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 185 MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device.  Default: null");
 186
 187
 188 // Misc stuff
 189 MODULE_AUTHOR(DRIVER_AUTHOR);
 190 MODULE_DESCRIPTION(DRIVER_DESC);
 191 MODULE_LICENSE(DRIVER_LICENSE);
 192 MODULE_VERSION(USBVISION_VERSION_STRING);
 193 MODULE_ALIAS(DRIVER_ALIAS);
 194
 195
 196 /****************************************************************************************/
 197 /* SYSFS Code - Copied from the stv680.c usb module.                                    */
 198 /* Device information is located at /sys/class/video4linux/video0                       */
 199 /* Device parameters information is located at /sys/module/usbvision                    */
 200 /* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
 201 /****************************************************************************************/
 202
 203
 204 #define YES_NO(x) ((x) ? "Yes" : "No")
 205
 206 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 207 {
 208         struct video_device *vdev = to_video_device(cd);
 209         return video_get_drvdata(vdev);
 210 }
 211
 212 static ssize_t show_version(struct class_device *cd, char *buf)
 213 {
 214         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 215 }
 216 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 217
 218 static ssize_t show_model(struct class_device *class_dev, char *buf)
 219 {
 220         struct video_device *vdev = to_video_device(class_dev);
 221         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 222         return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
 223 }
 224 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 225
 226 static ssize_t show_hue(struct class_device *class_dev, char *buf)
 227 {
 228         struct video_device *vdev = to_video_device(class_dev);
 229         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 230         struct v4l2_control ctrl;
 231         ctrl.id = V4L2_CID_HUE;
 232         ctrl.value = 0;
 233         call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 234         return sprintf(buf, "%d\n", ctrl.value >> 8);
 235 }
 236 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 237
 238 static ssize_t show_contrast(struct class_device *class_dev, char *buf)
 239 {
 240         struct video_device *vdev = to_video_device(class_dev);
 241         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 242         struct v4l2_control ctrl;
 243         ctrl.id = V4L2_CID_CONTRAST;
 244         ctrl.value = 0;
 245         call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 246         return sprintf(buf, "%d\n", ctrl.value >> 8);
 247 }
 248 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 249
 250 static ssize_t show_brightness(struct class_device *class_dev, char *buf)
 251 {
 252         struct video_device *vdev = to_video_device(class_dev);
 253         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 254         struct v4l2_control ctrl;
 255         ctrl.id = V4L2_CID_BRIGHTNESS;
 256         ctrl.value = 0;
 257         call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 258         return sprintf(buf, "%d\n", ctrl.value >> 8);
 259 }
 260 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 261
 262 static ssize_t show_saturation(struct class_device *class_dev, char *buf)
 263 {
 264         struct video_device *vdev = to_video_device(class_dev);
 265         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 266         struct v4l2_control ctrl;
 267         ctrl.id = V4L2_CID_SATURATION;
 268         ctrl.value = 0;
 269         call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 270         return sprintf(buf, "%d\n", ctrl.value >> 8);
 271 }
 272 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 273
 274 static ssize_t show_streaming(struct class_device *class_dev, char *buf)
 275 {
 276         struct video_device *vdev = to_video_device(class_dev);
 277         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 278         return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
 279 }
 280 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 281
 282 static ssize_t show_compression(struct class_device *class_dev, char *buf)
 283 {
 284         struct video_device *vdev = to_video_device(class_dev);
 285         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 286         return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 287 }
 288 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 289
 290 static ssize_t show_device_bridge(struct class_device *class_dev, char *buf)
 291 {
 292         struct video_device *vdev = to_video_device(class_dev);
 293         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 294         return sprintf(buf, "%d\n", usbvision->bridgeType);
 295 }
 296 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 297
 298 static void usbvision_create_sysfs(struct video_device *vdev)
 299 {
 300         int res;
 301         if (vdev) {
 302                 res=video_device_create_file(vdev, &class_device_attr_version);
 303                 res=video_device_create_file(vdev, &class_device_attr_model);
 304                 res=video_device_create_file(vdev, &class_device_attr_hue);
 305                 res=video_device_create_file(vdev, &class_device_attr_contrast);
 306                 res=video_device_create_file(vdev, &class_device_attr_brightness);
 307                 res=video_device_create_file(vdev, &class_device_attr_saturation);
 308                 res=video_device_create_file(vdev, &class_device_attr_streaming);
 309                 res=video_device_create_file(vdev, &class_device_attr_compression);
 310                 res=video_device_create_file(vdev, &class_device_attr_bridge);
 311         }
 312 }
 313
 314 static void usbvision_remove_sysfs(struct video_device *vdev)
 315 {
 316         if (vdev) {
 317                 video_device_remove_file(vdev, &class_device_attr_version);
 318                 video_device_remove_file(vdev, &class_device_attr_model);
 319                 video_device_remove_file(vdev, &class_device_attr_hue);
 320                 video_device_remove_file(vdev, &class_device_attr_contrast);
 321                 video_device_remove_file(vdev, &class_device_attr_brightness);
 322                 video_device_remove_file(vdev, &class_device_attr_saturation);
 323                 video_device_remove_file(vdev, &class_device_attr_streaming);
 324                 video_device_remove_file(vdev, &class_device_attr_compression);
 325                 video_device_remove_file(vdev, &class_device_attr_bridge);
 326         }
 327 }
 328
 329
 330 /*
 331  * usbvision_open()
 332  *
 333  * This is part of Video 4 Linux API. The driver can be opened by one
 334  * client only (checks internal counter 'usbvision->user'). The procedure
 335  * then allocates buffers needed for video processing.
 336  *
 337  */
 338 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 339 {
 340         struct video_device *dev = video_devdata(file);
 341         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 342         int errCode = 0;
 343
 344         PDEBUG(DBG_IO, "open");
 345
 346
 347         usbvision_reset_powerOffTimer(usbvision);
 348
 349         if (usbvision->user)
 350                 errCode = -EBUSY;
 351         else {
 352                 /* Allocate memory for the frame buffers */
 353                 errCode = usbvision_frames_alloc(usbvision);
 354                 if(!errCode) {
 355                         /* Allocate memory for the scratch ring buffer */
 356                         errCode = usbvision_scratch_alloc(usbvision);
 357                         if(!errCode) {
 358                                 /* Allocate memory for the USB S buffers */
 359                                 errCode = usbvision_sbuf_alloc(usbvision);
 360                                 if ((!errCode) && (usbvision->isocMode==ISOC_MODE_COMPRESS)) {
 361                                         /* Allocate intermediate decompression buffers only if needed */
 362                                         errCode = usbvision_decompress_alloc(usbvision);
 363                                 }
 364                         }
 365                 }
 366                 if (errCode) {
 367                         /* Deallocate all buffers if trouble */
 368                         usbvision_frames_free(usbvision);
 369                         usbvision_scratch_free(usbvision);
 370                         usbvision_sbuf_free(usbvision);
 371                         usbvision_decompress_free(usbvision);
 372                 }
 373         }
 374
 375         /* If so far no errors then we shall start the camera */
 376         if (!errCode) {
 377                 down(&usbvision->lock);
 378                 if (usbvision->power == 0) {
 379                         usbvision_power_on(usbvision);
 380                         usbvision_init_i2c(usbvision);
 381                 }
 382
 383                 /* Send init sequence only once, it's large! */
 384                 if (!usbvision->initialized) {
 385                         int setup_ok = 0;
 386                         setup_ok = usbvision_setup(usbvision,isocMode);
 387                         if (setup_ok)
 388                                 usbvision->initialized = 1;
 389                         else
 390                                 errCode = -EBUSY;
 391                 }
 392
 393                 if (!errCode) {
 394                         usbvision_begin_streaming(usbvision);
 395                         errCode = usbvision_init_isoc(usbvision);
 396                         /* device needs to be initialized before isoc transfer */
 397                         usbvision_muxsel(usbvision,0);
 398                         usbvision->user++;
 399                 }
 400                 else {
 401                         if (PowerOnAtOpen) {
 402                                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
 403                                 usbvision_power_off(usbvision);
 404                                 usbvision->initialized = 0;
 405                         }
 406                 }
 407                 up(&usbvision->lock);
 408         }
 409
 410         if (errCode) {
 411         }
 412
 413         /* prepare queues */
 414         usbvision_empty_framequeues(usbvision);
 415
 416         PDEBUG(DBG_IO, "success");
 417         return errCode;
 418 }
 419
 420 /*
 421  * usbvision_v4l2_close()
 422  *
 423  * This is part of Video 4 Linux API. The procedure
 424  * stops streaming and deallocates all buffers that were earlier
 425  * allocated in usbvision_v4l2_open().
 426  *
 427  */
 428 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 429 {
 430         struct video_device *dev = video_devdata(file);
 431         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 432
 433         PDEBUG(DBG_IO, "close");
 434         down(&usbvision->lock);
 435
 436         usbvision_audio_off(usbvision);
 437         usbvision_restart_isoc(usbvision);
 438         usbvision_stop_isoc(usbvision);
 439
 440         usbvision_decompress_free(usbvision);
 441         usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
 442         usbvision_scratch_free(usbvision);
 443         usbvision_sbuf_free(usbvision);
 444
 445         usbvision->user--;
 446
 447         if (PowerOnAtOpen) {
 448                 /* power off in a little while to avoid off/on every close/open short sequences */
 449                 usbvision_set_powerOffTimer(usbvision);
 450                 usbvision->initialized = 0;
 451         }
 452
 453         up(&usbvision->lock);
 454
 455         if (usbvision->remove_pending) {
 456                 info("%s: Final disconnect", __FUNCTION__);
 457                 usbvision_release(usbvision);
 458         }
 459
 460         PDEBUG(DBG_IO, "success");
 461
 462
 463         return 0;
 464 }
 465
 466
 467 /*
 468  * usbvision_ioctl()
 469  *
 470  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 471  *
 472  */
 473 static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
 474                                  unsigned int cmd, void *arg)
 475 {
 476         struct video_device *dev = video_devdata(file);
 477         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 478
 479         if (!USBVISION_IS_OPERATIONAL(usbvision))
 480                 return -EFAULT;
 481
 482         switch (cmd) {
 483
 484 #ifdef CONFIG_VIDEO_ADV_DEBUG
 485                 /* ioctls to allow direct acces to the NT100x registers */
 486                 case VIDIOC_INT_G_REGISTER:
 487                 {
 488                         struct v4l2_register *reg = arg;
 489                         int errCode;
 490
 491                         if (reg->i2c_id != 0)
 492                                 return -EINVAL;
 493                         /* NT100x has a 8-bit register space */
 494                         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 495                         if (errCode < 0) {
 496                                 err("%s: VIDIOC_INT_G_REGISTER failed: error %d", __FUNCTION__, errCode);
 497                         }
 498                         else {
 499                                 reg->val=(unsigned char)errCode;
 500                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_G_REGISTER reg=0x%02X, value=0x%02X",
 501                                                         (unsigned int)reg->reg, reg->val);
 502                                 errCode = 0; // No error
 503                         }
 504                         return errCode;
 505                 }
 506                 case VIDIOC_INT_S_REGISTER:
 507                 {
 508                         struct v4l2_register *reg = arg;
 509                         int errCode;
 510
 511                         if (reg->i2c_id != 0)
 512                                 return -EINVAL;
 513                         if (!capable(CAP_SYS_ADMIN))
 514                                 return -EPERM;
 515                         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 516                         if (errCode < 0) {
 517                                 err("%s: VIDIOC_INT_S_REGISTER failed: error %d", __FUNCTION__, errCode);
 518                         }
 519                         else {
 520                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_S_REGISTER reg=0x%02X, value=0x%02X",
 521                                                         (unsigned int)reg->reg, reg->val);
 522                                 errCode = 0;
 523                         }
 524                         return 0;
 525                 }
 526 #endif
 527                 case VIDIOC_QUERYCAP:
 528                 {
 529                         struct v4l2_capability *vc=arg;
 530
 531                         memset(vc, 0, sizeof(*vc));
 532                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 533                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
 534                                 sizeof(vc->card));
 535                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 536                                 sizeof(vc->bus_info));
 537                         vc->version = USBVISION_DRIVER_VERSION;
 538                         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 539                                 V4L2_CAP_AUDIO |
 540                                 V4L2_CAP_READWRITE |
 541                                 V4L2_CAP_STREAMING |
 542                                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 543                         PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
 544                         return 0;
 545                 }
 546                 case VIDIOC_ENUMINPUT:
 547                 {
 548                         struct v4l2_input *vi = arg;
 549                         int chan;
 550
 551                         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 552                                 return -EINVAL;
 553                         if (usbvision->have_tuner) {
 554                                 chan = vi->index;
 555                         }
 556                         else {
 557                                 chan = vi->index + 1; //skip Television string
 558                         }
 559                         switch(chan) {
 560                                 case 0:
 561                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 562                                                 strcpy(vi->name, "White Video Input");
 563                                         }
 564                                         else {
 565                                                 strcpy(vi->name, "Television");
 566                                                 vi->type = V4L2_INPUT_TYPE_TUNER;
 567                                                 vi->audioset = 1;
 568                                                 vi->tuner = chan;
 569                                                 vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
 570                                         }
 571                                         break;
 572                                 case 1:
 573                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 574                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 575                                                 strcpy(vi->name, "Green Video Input");
 576                                         }
 577                                         else {
 578                                                 strcpy(vi->name, "Composite Video Input");
 579                                         }
 580                                         vi->std = V4L2_STD_PAL;
 581                                         break;
 582                                 case 2:
 583                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 584                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 585                                                 strcpy(vi->name, "Yellow Video Input");
 586                                         }
 587                                         else {
 588                                         strcpy(vi->name, "S-Video Input");
 589                                         }
 590                                         vi->std = V4L2_STD_PAL;
 591                                         break;
 592                                 case 3:
 593                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 594                                         strcpy(vi->name, "Red Video Input");
 595                                         vi->std = V4L2_STD_PAL;
 596                                         break;
 597                         }
 598                         PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x",
 599                                vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
 600                         return 0;
 601                 }
 602                 case VIDIOC_ENUMSTD:
 603                 {
 604                         struct v4l2_standard *e = arg;
 605                         unsigned int i;
 606                         int ret;
 607
 608                         i = e->index;
 609                         if (i >= TVNORMS)
 610                                 return -EINVAL;
 611                         ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
 612                                                        tvnorms[e->index].name);
 613                         e->index = i;
 614                         if (ret < 0)
 615                                 return ret;
 616                         return 0;
 617                 }
 618                 case VIDIOC_G_INPUT:
 619                 {
 620                         int *input = arg;
 621                         *input = usbvision->ctl_input;
 622                         return 0;
 623                 }
 624                 case VIDIOC_S_INPUT:
 625                 {
 626                         int *input = arg;
 627                         if ((*input >= usbvision->video_inputs) || (*input < 0) )
 628                                 return -EINVAL;
 629                         usbvision->ctl_input = *input;
 630
 631                         down(&usbvision->lock);
 632                         usbvision_muxsel(usbvision, usbvision->ctl_input);
 633                         usbvision_set_input(usbvision);
 634                         usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
 635                         up(&usbvision->lock);
 636                         return 0;
 637                 }
 638                 case VIDIOC_G_STD:
 639                 {
 640                         v4l2_std_id *id = arg;
 641
 642                         *id = usbvision->tvnorm->id;
 643
 644                         PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
 645                         return 0;
 646                 }
 647                 case VIDIOC_S_STD:
 648                 {
 649                         v4l2_std_id *id = arg;
 650                         unsigned int i;
 651
 652                         for (i = 0; i < TVNORMS; i++)
 653                                 if (*id == tvnorms[i].id)
 654                                         break;
 655                         if (i == TVNORMS)
 656                                 for (i = 0; i < TVNORMS; i++)
 657                                         if (*id & tvnorms[i].id)
 658                                                 break;
 659                         if (i == TVNORMS)
 660                                 return -EINVAL;
 661
 662                         down(&usbvision->lock);
 663                         usbvision->tvnorm = &tvnorms[i];
 664
 665                         call_i2c_clients(usbvision, VIDIOC_S_STD,
 666                                          &usbvision->tvnorm->id);
 667
 668                         up(&usbvision->lock);
 669
 670                         PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
 671                         return 0;
 672                 }
 673                 case VIDIOC_G_TUNER:
 674                 {
 675                         struct v4l2_tuner *vt = arg;
 676
 677                         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 678                                 return -EINVAL;
 679                         strcpy(vt->name, "Television");
 680                         /* Let clients fill in the remainder of this struct */
 681                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 682
 683                         PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
 684                         return 0;
 685                 }
 686                 case VIDIOC_S_TUNER:
 687                 {
 688                         struct v4l2_tuner *vt = arg;
 689
 690                         // Only no or one tuner for now
 691                         if (!usbvision->have_tuner || vt->index)
 692                                 return -EINVAL;
 693                         /* let clients handle this */
 694                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 695
 696                         PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
 697                         return 0;
 698                 }
 699                 case VIDIOC_G_FREQUENCY:
 700                 {
 701                         struct v4l2_frequency *freq = arg;
 702
 703                         freq->tuner = 0; // Only one tuner
 704                         freq->type = V4L2_TUNER_ANALOG_TV;
 705                         freq->frequency = usbvision->freq;
 706                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 707                         return 0;
 708                 }
 709                 case VIDIOC_S_FREQUENCY:
 710                 {
 711                         struct v4l2_frequency *freq = arg;
 712
 713                         // Only no or one tuner for now
 714                         if (!usbvision->have_tuner || freq->tuner)
 715                                 return -EINVAL;
 716
 717                         usbvision->freq = freq->frequency;
 718                         call_i2c_clients(usbvision, cmd, freq);
 719                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 720                         return 0;
 721                 }
 722                 case VIDIOC_G_AUDIO:
 723                 {
 724                         struct v4l2_audio *v = arg;
 725                         memset(v,0, sizeof(v));
 726                         strcpy(v->name, "TV");
 727                         PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
 728                         return 0;
 729                 }
 730                 case VIDIOC_S_AUDIO:
 731                 {
 732                         struct v4l2_audio *v = arg;
 733                         if(v->index) {
 734                                 return -EINVAL;
 735                         }
 736                         PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
 737                         return 0;
 738                 }
 739                 case VIDIOC_QUERYCTRL:
 740                 {
 741                         struct v4l2_queryctrl *ctrl = arg;
 742                         int id=ctrl->id;
 743
 744                         memset(ctrl,0,sizeof(*ctrl));
 745                         ctrl->id=id;
 746
 747                         call_i2c_clients(usbvision, cmd, arg);
 748
 749                         if (ctrl->type)
 750                                 return 0;
 751                         else
 752                                 return -EINVAL;
 753
 754                         PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
 755                 }
 756                 case VIDIOC_G_CTRL:
 757                 {
 758                         struct v4l2_control *ctrl = arg;
 759                         PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 760                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 761                         return 0;
 762                 }
 763                 case VIDIOC_S_CTRL:
 764                 {
 765                         struct v4l2_control *ctrl = arg;
 766
 767                         PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 768                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 769                         return 0;
 770                 }
 771                 case VIDIOC_REQBUFS:
 772                 {
 773                         struct v4l2_requestbuffers *vr = arg;
 774                         int ret;
 775
 776                         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 777
 778                         // Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
 779                         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 780                            (vr->memory != V4L2_MEMORY_MMAP))
 781                                 return -EINVAL;
 782
 783                         if(usbvision->streaming == Stream_On) {
 784                                 if ((ret = usbvision_stream_interrupt(usbvision)))
 785                                     return ret;
 786                         }
 787
 788                         usbvision_empty_framequeues(usbvision);
 789
 790                         usbvision->curFrame = NULL;
 791
 792                         PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
 793                         return 0;
 794                 }
 795                 case VIDIOC_QUERYBUF:
 796                 {
 797                         struct v4l2_buffer *vb = arg;
 798                         struct usbvision_frame *frame;
 799
 800                         // FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
 801
 802                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 803                                 return -EINVAL;
 804                         }
 805                         if(vb->index>=USBVISION_NUMFRAMES)  {
 806                                 return -EINVAL;
 807                         }
 808                         // Updating the corresponding frame state
 809                         vb->flags = 0;
 810                         frame = &usbvision->frame[vb->index];
 811                         if(frame->grabstate >= FrameState_Ready)
 812                                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 813                         if(frame->grabstate >= FrameState_Done)
 814                                 vb->flags |= V4L2_BUF_FLAG_DONE;
 815                         if(frame->grabstate == FrameState_Unused)
 816                                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 817                         vb->memory = V4L2_MEMORY_MMAP;
 818
 819                         vb->m.offset = vb->index*usbvision->max_frame_size;
 820
 821                         vb->memory = V4L2_MEMORY_MMAP;
 822                         vb->field = V4L2_FIELD_NONE;
 823                         vb->length = usbvision->max_frame_size;
 824                         vb->timestamp = usbvision->frame[vb->index].timestamp;
 825                         vb->sequence = usbvision->frame[vb->index].sequence;
 826                         return 0;
 827                 }
 828                 case VIDIOC_QBUF:
 829                 {
 830                         struct v4l2_buffer *vb = arg;
 831                         struct usbvision_frame *frame;
 832                         unsigned long lock_flags;
 833
 834                         // FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
 835                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 836                                 return -EINVAL;
 837                         }
 838                         if(vb->index>=USBVISION_NUMFRAMES)  {
 839                                 return -EINVAL;
 840                         }
 841
 842                         frame = &usbvision->frame[vb->index];
 843
 844                         if (frame->grabstate != FrameState_Unused) {
 845                                 return -EAGAIN;
 846                         }
 847
 848                         /* Mark it as ready and enqueue frame */
 849                         frame->grabstate = FrameState_Ready;
 850                         frame->scanstate = ScanState_Scanning;
 851                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 852
 853                         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 854
 855                         /* set v4l2_format index */
 856                         frame->v4l2_format = usbvision->palette;
 857
 858                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 859                         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 860                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 861
 862                         PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
 863                         return 0;
 864                 }
 865                 case VIDIOC_DQBUF:
 866                 {
 867                         struct v4l2_buffer *vb = arg;
 868                         int ret;
 869                         struct usbvision_frame *f;
 870                         unsigned long lock_flags;
 871
 872                         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 873                                 return -EINVAL;
 874
 875                         if (list_empty(&(usbvision->outqueue))) {
 876                                 if (usbvision->streaming == Stream_Idle)
 877                                         return -EINVAL;
 878                                 ret = wait_event_interruptible
 879                                         (usbvision->wait_frame,
 880                                          !list_empty(&(usbvision->outqueue)));
 881                                 if (ret)
 882                                         return ret;
 883                         }
 884
 885                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 886                         f = list_entry(usbvision->outqueue.next,
 887                                        struct usbvision_frame, frame);
 888                         list_del(usbvision->outqueue.next);
 889                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 890
 891                         f->grabstate = FrameState_Unused;
 892
 893                         vb->memory = V4L2_MEMORY_MMAP;
 894                         vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
 895                         vb->index = f->index;
 896                         vb->sequence = f->sequence;
 897                         vb->timestamp = f->timestamp;
 898                         vb->field = V4L2_FIELD_NONE;
 899                         vb->bytesused = f->scanlength;
 900
 901                         return 0;
 902                 }
 903                 case VIDIOC_STREAMON:
 904                 {
 905                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 906
 907                         usbvision->streaming = Stream_On;
 908
 909                         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 910
 911                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
 912
 913                         return 0;
 914                 }
 915                 case VIDIOC_STREAMOFF:
 916                 {
 917                         int *type = arg;
 918                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 919
 920                         if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 921                                 return -EINVAL;
 922
 923                         if(usbvision->streaming == Stream_On) {
 924                                 usbvision_stream_interrupt(usbvision);
 925                                 // Stop all video streamings
 926                                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 927                         }
 928                         usbvision_empty_framequeues(usbvision);
 929
 930                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
 931                         return 0;
 932                 }
 933                 case VIDIOC_ENUM_FMT:
 934                 {
 935                         struct v4l2_fmtdesc *vfd = arg;
 936
 937                         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 938                                 return -EINVAL;
 939                         }
 940                         vfd->flags = 0;
 941                         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 942                         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 943                         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 944                         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 945                         return 0;
 946                 }
 947                 case VIDIOC_G_FMT:
 948                 {
 949                         struct v4l2_format *vf = arg;
 950
 951                         switch (vf->type) {
 952                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 953                                 {
 954                                         vf->fmt.pix.width = usbvision->curwidth;
 955                                         vf->fmt.pix.height = usbvision->curheight;
 956                                         vf->fmt.pix.pixelformat = usbvision->palette.format;
 957                                         vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 958                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 959                                         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 960                                         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 961                                 }
 962                                 return 0;
 963                                 default:
 964                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
 965                                         return -EINVAL;
 966                         }
 967                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d",vf->fmt.win.w.width, vf->fmt.win.w.height);
 968                         return 0;
 969                 }
 970                 case VIDIOC_TRY_FMT:
 971                 case VIDIOC_S_FMT:
 972                 {
 973                         struct v4l2_format *vf = arg;
 974                         int formatIdx,ret;
 975
 976                         switch(vf->type) {
 977                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 978                                 {
 979                                         /* Find requested format in available ones */
 980                                         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
 981                                                 if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
 982                                                         usbvision->palette = usbvision_v4l2_format[formatIdx];
 983                                                         break;
 984                                                 }
 985                                         }
 986                                         /* robustness */
 987                                         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
 988                                                 return -EINVAL;
 989                                         }
 990                                         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 991                                         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 992
 993                                         /* stop io in case it is already in progress */
 994                                         if(usbvision->streaming == Stream_On) {
 995                                                 if ((ret = usbvision_stream_interrupt(usbvision)))
 996                                                         return ret;
 997                                         }
 998                                         usbvision_empty_framequeues(usbvision);
 999
1000                                         usbvision->curFrame = NULL;
1001
1002                                         // by now we are committed to the new data...
1003                                         down(&usbvision->lock);
1004                                         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1005                                         up(&usbvision->lock);
1006
1007                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
1008                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1009                                         return 0;
1010                                 }
1011                                 default:
1012                                         return -EINVAL;
1013                         }
1014                 }
1015                 default:
1016                         return -ENOIOCTLCMD;
1017         }
1018         return 0;
1019 }
1020
1021 static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
1022                        unsigned int cmd, unsigned long arg)
1023 {
1024         return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
1025 }
1026
1027
1028 static ssize_t usbvision_v4l2_read(struct file *file, char *buf,
1029                       size_t count, loff_t *ppos)
1030 {
1031         struct video_device *dev = video_devdata(file);
1032         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1033         int noblock = file->f_flags & O_NONBLOCK;
1034         unsigned long lock_flags;
1035
1036         int frmx = -1;
1037         int ret,i;
1038         struct usbvision_frame *frame;
1039
1040         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
1041
1042         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1043                 return -EFAULT;
1044
1045         /* no stream is running, make it running ! */
1046         usbvision->streaming = Stream_On;
1047         call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1048
1049         /* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
1050         for(i=0;i<USBVISION_NUMFRAMES;i++) {
1051                 frame = &usbvision->frame[i];
1052                 if(frame->grabstate == FrameState_Unused) {
1053                         /* Mark it as ready and enqueue frame */
1054                         frame->grabstate = FrameState_Ready;
1055                         frame->scanstate = ScanState_Scanning;
1056                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
1057
1058                         /* set v4l2_format index */
1059                         frame->v4l2_format = usbvision->palette;
1060
1061                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1062                         list_add_tail(&frame->frame, &usbvision->inqueue);
1063                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1064                 }
1065         }
1066
1067         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1068         if (list_empty(&(usbvision->outqueue))) {
1069                 if(noblock)
1070                         return -EAGAIN;
1071
1072                 ret = wait_event_interruptible
1073                         (usbvision->wait_frame,
1074                          !list_empty(&(usbvision->outqueue)));
1075                 if (ret)
1076                         return ret;
1077         }
1078
1079         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1080         frame = list_entry(usbvision->outqueue.next,
1081                            struct usbvision_frame, frame);
1082         list_del(usbvision->outqueue.next);
1083         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1084
1085         /* An error returns an empty frame */
1086         if (frame->grabstate == FrameState_Error) {
1087                 frame->bytes_read = 0;
1088                 return 0;
1089         }
1090
1091         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
1092                        frame->index, frame->bytes_read, frame->scanlength);
1093
1094         /* copy bytes to user space; we allow for partials reads */
1095         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1096                 count = frame->scanlength - frame->bytes_read;
1097
1098         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1099                 return -EFAULT;
1100         }
1101
1102         frame->bytes_read += count;
1103         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
1104                        (unsigned long)count, frame->bytes_read);
1105
1106         // For now, forget the frame if it has not been read in one shot.
1107 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1108                 frame->bytes_read = 0;
1109
1110                 /* Mark it as available to be used again. */
1111                 usbvision->frame[frmx].grabstate = FrameState_Unused;
1112 /*      } */
1113
1114         return count;
1115 }
1116
1117 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1118 {
1119         unsigned long size = vma->vm_end - vma->vm_start,
1120                 start = vma->vm_start;
1121         void *pos;
1122         u32 i;
1123
1124         struct video_device *dev = video_devdata(file);
1125         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1126
1127         down(&usbvision->lock);
1128
1129         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1130                 up(&usbvision->lock);
1131                 return -EFAULT;
1132         }
1133
1134         if (!(vma->vm_flags & VM_WRITE) ||
1135             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1136                 up(&usbvision->lock);
1137                 return -EINVAL;
1138         }
1139
1140         for (i = 0; i < USBVISION_NUMFRAMES; i++) {
1141                 if (((usbvision->max_frame_size*i) >> PAGE_SHIFT) == vma->vm_pgoff)
1142                         break;
1143         }
1144         if (i == USBVISION_NUMFRAMES) {
1145                 PDEBUG(DBG_FUNC, "mmap: user supplied mapping address is out of range");
1146                 up(&usbvision->lock);
1147                 return -EINVAL;
1148         }
1149
1150         /* VM_IO is eventually going to replace PageReserved altogether */
1151         vma->vm_flags |= VM_IO;
1152         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1153
1154         pos = usbvision->frame[i].data;
1155         while (size > 0) {
1156
1157                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1158                         PDEBUG(DBG_FUNC, "mmap: vm_insert_page failed");
1159                         up(&usbvision->lock);
1160                         return -EAGAIN;
1161                 }
1162                 start += PAGE_SIZE;
1163                 pos += PAGE_SIZE;
1164                 size -= PAGE_SIZE;
1165         }
1166
1167         up(&usbvision->lock);
1168         return 0;
1169 }
1170
1171
1172 /*
1173  * Here comes the stuff for radio on usbvision based devices
1174  *
1175  */
1176 static int usbvision_radio_open(struct inode *inode, struct file *file)
1177 {
1178         struct video_device *dev = video_devdata(file);
1179         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1180         struct v4l2_frequency freq;
1181         int errCode = 0;
1182
1183         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1184
1185         down(&usbvision->lock);
1186
1187         if (usbvision->user) {
1188                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1189                 errCode = -EBUSY;
1190         }
1191         else {
1192                 if(PowerOnAtOpen) {
1193                         usbvision_reset_powerOffTimer(usbvision);
1194                         if (usbvision->power == 0) {
1195                                 usbvision_power_on(usbvision);
1196                                 usbvision_init_i2c(usbvision);
1197                         }
1198                 }
1199
1200                 // If so far no errors then we shall start the radio
1201                 usbvision->radio = 1;
1202                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1203                 freq.frequency = 1517; //SWR3 @ 94.8MHz
1204                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
1205                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1206                 usbvision->user++;
1207         }
1208
1209         if (errCode) {
1210                 if (PowerOnAtOpen) {
1211                         usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1212                         usbvision_power_off(usbvision);
1213                         usbvision->initialized = 0;
1214                 }
1215         }
1216         up(&usbvision->lock);
1217         return errCode;
1218 }
1219
1220
1221 static int usbvision_radio_close(struct inode *inode, struct file *file)
1222 {
1223         struct video_device *dev = video_devdata(file);
1224         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1225         int errCode = 0;
1226
1227         PDEBUG(DBG_IO, "");
1228
1229         down(&usbvision->lock);
1230
1231         usbvision_audio_off(usbvision);
1232         usbvision->radio=0;
1233         usbvision->user--;
1234
1235         if (PowerOnAtOpen) {
1236                 usbvision_set_powerOffTimer(usbvision);
1237                 usbvision->initialized = 0;
1238         }
1239
1240         up(&usbvision->lock);
1241
1242         if (usbvision->remove_pending) {
1243                 info("%s: Final disconnect", __FUNCTION__);
1244                 usbvision_release(usbvision);
1245         }
1246
1247
1248         PDEBUG(DBG_IO, "success");
1249
1250         return errCode;
1251 }
1252
1253 static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
1254                                  unsigned int cmd, void *arg)
1255 {
1256         struct video_device *dev = video_devdata(file);
1257         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1258
1259         if (!USBVISION_IS_OPERATIONAL(usbvision))
1260                 return -EIO;
1261
1262         switch (cmd) {
1263                 case VIDIOC_QUERYCAP:
1264                 {
1265                         struct v4l2_capability *vc=arg;
1266
1267                         memset(vc, 0, sizeof(*vc));
1268                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
1269                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
1270                                 sizeof(vc->card));
1271                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
1272                                 sizeof(vc->bus_info));
1273                         vc->version = USBVISION_DRIVER_VERSION;
1274                         vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
1275                         PDEBUG(DBG_IO, "VIDIOC_QUERYCAP");
1276                         return 0;
1277                 }
1278                 case VIDIOC_QUERYCTRL:
1279                 {
1280                         struct v4l2_queryctrl *ctrl = arg;
1281                         int id=ctrl->id;
1282
1283                         memset(ctrl,0,sizeof(*ctrl));
1284                         ctrl->id=id;
1285
1286                         call_i2c_clients(usbvision, cmd, arg);
1287                         PDEBUG(DBG_IO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
1288
1289                         if (ctrl->type)
1290                                 return 0;
1291                         else
1292                                 return -EINVAL;
1293
1294                 }
1295                 case VIDIOC_G_CTRL:
1296                 {
1297                         struct v4l2_control *ctrl = arg;
1298
1299                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
1300                         PDEBUG(DBG_IO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1301                         return 0;
1302                 }
1303                 case VIDIOC_S_CTRL:
1304                 {
1305                         struct v4l2_control *ctrl = arg;
1306
1307                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
1308                         PDEBUG(DBG_IO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1309                         return 0;
1310                 }
1311                 case VIDIOC_G_TUNER:
1312                 {
1313                         struct v4l2_tuner *t = arg;
1314
1315                         if (t->index > 0)
1316                                 return -EINVAL;
1317
1318                         memset(t,0,sizeof(*t));
1319                         strcpy(t->name, "Radio");
1320                         t->type = V4L2_TUNER_RADIO;
1321
1322                         /* Let clients fill in the remainder of this struct */
1323                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
1324                         PDEBUG(DBG_IO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
1325                         return 0;
1326                 }
1327                 case VIDIOC_S_TUNER:
1328                 {
1329                         struct v4l2_tuner *vt = arg;
1330
1331                         // Only no or one tuner for now
1332                         if (!usbvision->have_tuner || vt->index)
1333                                 return -EINVAL;
1334                         /* let clients handle this */
1335                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
1336
1337                         PDEBUG(DBG_IO, "VIDIOC_S_TUNER");
1338                         return 0;
1339                 }
1340                 case VIDIOC_G_AUDIO:
1341                 {
1342                         struct v4l2_audio *a = arg;
1343
1344                         memset(a,0,sizeof(*a));
1345                         strcpy(a->name,"Radio");
1346                         PDEBUG(DBG_IO, "VIDIOC_G_AUDIO");
1347                         return 0;
1348                 }
1349                 case VIDIOC_S_AUDIO:
1350                 case VIDIOC_S_INPUT:
1351                 case VIDIOC_S_STD:
1352                 return 0;
1353
1354                 case VIDIOC_G_FREQUENCY:
1355                 {
1356                         struct v4l2_frequency *f = arg;
1357
1358                         memset(f,0,sizeof(*f));
1359
1360                         f->type = V4L2_TUNER_RADIO;
1361                         f->frequency = usbvision->freq;
1362                         call_i2c_clients(usbvision, cmd, f);
1363                         PDEBUG(DBG_IO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1364
1365                         return 0;
1366                 }
1367                 case VIDIOC_S_FREQUENCY:
1368                 {
1369                         struct v4l2_frequency *f = arg;
1370
1371                         if (f->tuner != 0)
1372                                 return -EINVAL;
1373                         usbvision->freq = f->frequency;
1374                         call_i2c_clients(usbvision, cmd, f);
1375                         PDEBUG(DBG_IO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1376
1377                         return 0;
1378                 }
1379                 default:
1380                 {
1381                         PDEBUG(DBG_IO, "%s: Unknown command %x", __FUNCTION__, cmd);
1382                         return -ENOIOCTLCMD;
1383                 }
1384         }
1385         return 0;
1386 }
1387
1388
1389 static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
1390                        unsigned int cmd, unsigned long arg)
1391 {
1392         return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
1393 }
1394
1395
1396 /*
1397  * Here comes the stuff for vbi on usbvision based devices
1398  *
1399  */
1400 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1401 {
1402         /* TODO */
1403         return -EINVAL;
1404
1405 }
1406
1407 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1408 {
1409         /* TODO */
1410         return -EINVAL;
1411 }
1412
1413 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1414                                  unsigned int cmd, void *arg)
1415 {
1416         /* TODO */
1417         return -EINVAL;
1418 }
1419
1420 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1421                        unsigned int cmd, unsigned long arg)
1422 {
1423         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1424 }
1425
1426
1427 //
1428 // Video registration stuff
1429 //
1430
1431 // Video template
1432 static struct file_operations usbvision_fops = {
1433         .owner             = THIS_MODULE,
1434         .open           = usbvision_v4l2_open,
1435         .release        = usbvision_v4l2_close,
1436         .read           = usbvision_v4l2_read,
1437         .mmap           = usbvision_v4l2_mmap,
1438         .ioctl          = usbvision_v4l2_ioctl,
1439         .llseek         = no_llseek,
1440 };
1441 static struct video_device usbvision_video_template = {
1442         .owner             = THIS_MODULE,
1443         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1444         .hardware       = VID_HARDWARE_USBVISION,
1445         .fops           = &usbvision_fops,
1446         .name           = "usbvision-video",
1447         .release        = video_device_release,
1448         .minor          = -1,
1449 };
1450
1451
1452 // Radio template
1453 static struct file_operations usbvision_radio_fops = {
1454         .owner             = THIS_MODULE,
1455         .open           = usbvision_radio_open,
1456         .release        = usbvision_radio_close,
1457         .ioctl          = usbvision_radio_ioctl,
1458         .llseek         = no_llseek,
1459 };
1460
1461 static struct video_device usbvision_radio_template=
1462 {
1463         .owner             = THIS_MODULE,
1464         .type           = VID_TYPE_TUNER,
1465         .hardware       = VID_HARDWARE_USBVISION,
1466         .fops           = &usbvision_radio_fops,
1467         .release        = video_device_release,
1468         .name           = "usbvision-radio",
1469         .minor          = -1,
1470 };
1471
1472
1473 // vbi template
1474 static struct file_operations usbvision_vbi_fops = {
1475         .owner             = THIS_MODULE,
1476         .open           = usbvision_vbi_open,
1477         .release        = usbvision_vbi_close,
1478         .ioctl          = usbvision_vbi_ioctl,
1479         .llseek         = no_llseek,
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]", usbvision->vbi->minor & 0x1f);
1524                 if (usbvision->vbi->minor != -1) {
1525                         video_unregister_device(usbvision->vbi);
1526                 }
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]", usbvision->rdev->minor & 0x1f);
1536                 if (usbvision->rdev->minor != -1) {
1537                         video_unregister_device(usbvision->rdev);
1538                 }
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]", usbvision->vdev->minor & 0x1f);
1548                 if (usbvision->vdev->minor != -1) {
1549                         video_unregister_device(usbvision->vdev);
1550                 }
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, &usbvision_video_template, "USBVision Video");
1563         if (usbvision->vdev == NULL) {
1564                 goto err_exit;
1565         }
1566         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
1567                 goto err_exit;
1568         }
1569         info("USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]", usbvision->nr,usbvision->vdev->minor & 0x1f);
1570
1571         // Radio Device:
1572         if (usbvision_device_data[usbvision->DevModel].Radio) {
1573                 // usbvision has radio
1574                 usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
1575                 if (usbvision->rdev == NULL) {
1576                         goto err_exit;
1577                 }
1578                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
1579                         goto err_exit;
1580                 }
1581                 info("USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]", usbvision->nr, usbvision->rdev->minor & 0x1f);
1582         }
1583         // vbi Device:
1584         if (usbvision_device_data[usbvision->DevModel].vbi) {
1585                 usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
1586                 if (usbvision->vdev == NULL) {
1587                         goto err_exit;
1588                 }
1589                 if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
1590                         goto err_exit;
1591                 }
1592                 info("USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)", usbvision->nr,usbvision->vbi->minor & 0x1f);
1593         }
1594         // all done
1595         return 0;
1596
1597  err_exit:
1598         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1599         usbvision_unregister_video(usbvision);
1600         return -1;
1601 }
1602
1603 /*
1604  * usbvision_alloc()
1605  *
1606  * This code allocates the struct usb_usbvision. It is filled with default values.
1607  *
1608  * Returns NULL on error, a pointer to usb_usbvision else.
1609  *
1610  */
1611 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1612 {
1613         struct usb_usbvision *usbvision;
1614
1615         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
1616                 goto err_exit;
1617         }
1618
1619         usbvision->dev = dev;
1620
1621         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1622
1623         // prepare control urb for control messages during interrupts
1624         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1625         if (usbvision->ctrlUrb == NULL) {
1626                 goto err_exit;
1627         }
1628         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1629         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1630
1631         usbvision_init_powerOffTimer(usbvision);
1632
1633         return usbvision;
1634
1635 err_exit:
1636         if (usbvision && usbvision->ctrlUrb) {
1637                 usb_free_urb(usbvision->ctrlUrb);
1638         }
1639         if (usbvision) {
1640                 kfree(usbvision);
1641         }
1642         return NULL;
1643 }
1644
1645 /*
1646  * usbvision_release()
1647  *
1648  * This code does final release of struct usb_usbvision. This happens
1649  * after the device is disconnected -and- all clients closed their files.
1650  *
1651  */
1652 static void usbvision_release(struct usb_usbvision *usbvision)
1653 {
1654         PDEBUG(DBG_PROBE, "");
1655
1656         down(&usbvision->lock);
1657
1658         usbvision_reset_powerOffTimer(usbvision);
1659
1660         usbvision->initialized = 0;
1661
1662         up(&usbvision->lock);
1663
1664         usbvision_remove_sysfs(usbvision->vdev);
1665         usbvision_unregister_video(usbvision);
1666
1667         if (usbvision->ctrlUrb) {
1668                 usb_free_urb(usbvision->ctrlUrb);
1669         }
1670
1671         kfree(usbvision);
1672
1673         PDEBUG(DBG_PROBE, "success");
1674 }
1675
1676
1677 /******************************** usb interface *****************************************/
1678
1679 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1680 {
1681         int model,i;
1682
1683         if (usbvision == NULL)
1684                 return;
1685
1686         model = usbvision->DevModel;
1687         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1688
1689         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
1690                 usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
1691         } else {
1692                 usbvision->Vin_Reg2_Preset = 0;
1693         }
1694
1695         for (i = 0; i < TVNORMS; i++)
1696                 if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
1697                         break;
1698         if (i == TVNORMS)
1699                 i = 0;
1700         usbvision->tvnorm = &tvnorms[i];        /* set default norm */
1701
1702         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1703         usbvision->ctl_input = 0;
1704
1705         /* This should be here to make i2c clients to be able to register */
1706         usbvision_audio_off(usbvision); //first switch off audio
1707         if (!PowerOnAtOpen) {
1708                 usbvision_power_on(usbvision);  //and then power up the noisy tuner
1709                 usbvision_init_i2c(usbvision);
1710         }
1711 }
1712
1713 /*
1714  * usbvision_probe()
1715  *
1716  * This procedure queries device descriptor and accepts the interface
1717  * if it looks like USBVISION video device
1718  *
1719  */
1720 static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
1721 {
1722         struct usb_device *dev = interface_to_usbdev(intf);
1723         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1724         const struct usb_host_interface *interface;
1725         struct usb_usbvision *usbvision = NULL;
1726         const struct usb_endpoint_descriptor *endpoint;
1727         int model;
1728
1729         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1730                                         dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
1731         /* Is it an USBVISION video dev? */
1732         model = 0;
1733         for(model = 0; usbvision_device_data[model].idVendor; model++) {
1734                 if (le16_to_cpu(dev->descriptor.idVendor) != usbvision_device_data[model].idVendor) {
1735                         continue;
1736                 }
1737                 if (le16_to_cpu(dev->descriptor.idProduct) != usbvision_device_data[model].idProduct) {
1738                         continue;
1739                 }
1740
1741                 info("%s: %s found", __FUNCTION__, usbvision_device_data[model].ModelString);
1742                 break;
1743         }
1744
1745         if (usbvision_device_data[model].idVendor == 0) {
1746                 return -ENODEV; //no matching device
1747         }
1748         if (usbvision_device_data[model].Interface >= 0) {
1749                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1750         }
1751         else {
1752                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1753         }
1754         endpoint = &interface->endpoint[1].desc;
1755         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
1756                 err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
1757                 err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
1758                 return -ENODEV;
1759         }
1760         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1761                 err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
1762                 return -ENODEV;
1763         }
1764
1765         usb_get_dev(dev);
1766
1767         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1768                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1769                 return -ENOMEM;
1770         }
1771         if (dev->descriptor.bNumConfigurations > 1) {
1772                 usbvision->bridgeType = BRIDGE_NT1004;
1773         }
1774         else if (usbvision_device_data[model].ModelString == "Dazzle Fusion Model DVC-90 Rev 1 (SECAM)") {
1775                 usbvision->bridgeType = BRIDGE_NT1005;
1776         }
1777         else {
1778                 usbvision->bridgeType = BRIDGE_NT1003;
1779         }
1780         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1781
1782         down(&usbvision->lock);
1783
1784         usbvision->nr = usbvision_nr++;
1785
1786         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1787         if (usbvision->have_tuner) {
1788                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1789         }
1790
1791         usbvision->tuner_addr = ADDR_UNSET;
1792
1793         usbvision->DevModel = model;
1794         usbvision->remove_pending = 0;
1795         usbvision->iface = ifnum;
1796         usbvision->ifaceAltInactive = 0;
1797         usbvision->ifaceAltActive = 1;
1798         usbvision->video_endp = endpoint->bEndpointAddress;
1799         usbvision->isocPacketSize = 0;
1800         usbvision->usb_bandwidth = 0;
1801         usbvision->user = 0;
1802         usbvision->streaming = Stream_Off;
1803         usbvision_register_video(usbvision);
1804         usbvision_configure_video(usbvision);
1805         up(&usbvision->lock);
1806
1807
1808         usb_set_intfdata (intf, usbvision);
1809         usbvision_create_sysfs(usbvision->vdev);
1810
1811         PDEBUG(DBG_PROBE, "success");
1812         return 0;
1813 }
1814
1815
1816 /*
1817  * usbvision_disconnect()
1818  *
1819  * This procedure stops all driver activity, deallocates interface-private
1820  * structure (pointed by 'ptr') and after that driver should be removable
1821  * with no ill consequences.
1822  *
1823  */
1824 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1825 {
1826         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1827
1828         PDEBUG(DBG_PROBE, "");
1829
1830         if (usbvision == NULL) {
1831                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1832                 return;
1833         }
1834         usb_set_intfdata (intf, NULL);
1835
1836         down(&usbvision->lock);
1837
1838         // At this time we ask to cancel outstanding URBs
1839         usbvision_stop_isoc(usbvision);
1840
1841         if (usbvision->power) {
1842                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1843                 usbvision_power_off(usbvision);
1844         }
1845         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1846
1847         usb_put_dev(usbvision->dev);
1848         usbvision->dev = NULL;  // USB device is no more
1849
1850         up(&usbvision->lock);
1851
1852         if (usbvision->user) {
1853                 info("%s: In use, disconnect pending", __FUNCTION__);
1854                 wake_up_interruptible(&usbvision->wait_frame);
1855                 wake_up_interruptible(&usbvision->wait_stream);
1856         }
1857         else {
1858                 usbvision_release(usbvision);
1859         }
1860
1861         PDEBUG(DBG_PROBE, "success");
1862
1863 }
1864
1865 static struct usb_driver usbvision_driver = {
1866         .name           = "usbvision",
1867         .id_table       = usbvision_table,
1868         .probe          = usbvision_probe,
1869         .disconnect     = usbvision_disconnect
1870 };
1871
1872 /*
1873  * customdevice_process()
1874  *
1875  * This procedure preprocesses CustomDevice parameter if any
1876  *
1877  */
1878 void customdevice_process(void)
1879 {
1880         usbvision_device_data[0]=usbvision_device_data[1];
1881         usbvision_table[0]=usbvision_table[1];
1882
1883         if(CustomDevice)
1884         {
1885                 char *parse=CustomDevice;
1886
1887                 PDEBUG(DBG_PROBE, "CustomDevide=%s", CustomDevice);
1888
1889                 /*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
1890                 usbvision_device_data[0].idVendor;
1891                 usbvision_device_data[0].idProduct;
1892                 usbvision_device_data[0].Interface;
1893                 usbvision_device_data[0].Codec;
1894                 usbvision_device_data[0].VideoChannels;
1895                 usbvision_device_data[0].VideoNorm;
1896                 usbvision_device_data[0].AudioChannels;
1897                 usbvision_device_data[0].Radio;
1898                 usbvision_device_data[0].Tuner;
1899                 usbvision_device_data[0].TunerType;
1900                 usbvision_device_data[0].Vin_Reg1;
1901                 usbvision_device_data[0].Vin_Reg2;
1902                 usbvision_device_data[0].X_Offset;
1903                 usbvision_device_data[0].Y_Offset;
1904                 usbvision_device_data[0].Dvi_yuv;
1905                 usbvision_device_data[0].ModelString;
1906                 */
1907
1908                 rmspace(parse);
1909                 usbvision_device_data[0].ModelString="USBVISION Custom Device";
1910
1911                 parse+=2;
1912                 sscanf(parse,"%x",&usbvision_device_data[0].idVendor);
1913                 goto2next(parse);
1914                 PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_device_data[0].idVendor);
1915                 parse+=2;
1916                 sscanf(parse,"%x",&usbvision_device_data[0].idProduct);
1917                 goto2next(parse);
1918                 PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_device_data[0].idProduct);
1919                 sscanf(parse,"%d",&usbvision_device_data[0].Interface);
1920                 goto2next(parse);
1921                 PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
1922                 sscanf(parse,"%d",&usbvision_device_data[0].Codec);
1923                 goto2next(parse);
1924                 PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
1925                 sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
1926                 goto2next(parse);
1927                 PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
1928
1929                 switch(*parse)
1930                 {
1931                         case 'P':
1932                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL");
1933                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
1934                                 break;
1935
1936                         case 'S':
1937                                 PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
1938                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_SECAM;
1939                                 break;
1940
1941                         case 'N':
1942                                 PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
1943                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_NTSC;
1944                                 break;
1945
1946                         default:
1947                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
1948                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
1949                                 break;
1950                 }
1951                 goto2next(parse);
1952
1953                 sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
1954                 goto2next(parse);
1955                 PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
1956                 sscanf(parse,"%d",&usbvision_device_data[0].Radio);
1957                 goto2next(parse);
1958                 PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
1959                 sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
1960                 goto2next(parse);
1961                 PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
1962                 sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
1963                 goto2next(parse);
1964                 PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
1965                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
1966                 goto2next(parse);
1967                 PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
1968                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
1969                 goto2next(parse);
1970                 PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
1971                 sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
1972                 goto2next(parse);
1973                 PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
1974                 sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
1975                 goto2next(parse);
1976                 PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
1977                 sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
1978                 PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
1979
1980                 //add to usbvision_table also
1981                 usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
1982                 usbvision_table[0].idVendor=usbvision_device_data[0].idVendor;
1983                 usbvision_table[0].idProduct=usbvision_device_data[0].idProduct;
1984
1985         }
1986 }
1987
1988
1989
1990 /*
1991  * usbvision_init()
1992  *
1993  * This code is run to initialize the driver.
1994  *
1995  */
1996 static int __init usbvision_init(void)
1997 {
1998         int errCode;
1999
2000         PDEBUG(DBG_PROBE, "");
2001
2002         PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled [video]");
2003         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
2004         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
2005         PDEBUG(DBG_FUNC, "FUNC    debugging is enabled [video]");
2006
2007         /* disable planar mode support unless compression enabled */
2008         if (isocMode != ISOC_MODE_COMPRESS ) {
2009                 // FIXME : not the right way to set supported flag
2010                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
2011                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
2012         }
2013
2014         customdevice_process();
2015
2016         errCode = usb_register(&usbvision_driver);
2017
2018         if (errCode == 0) {
2019                 info(DRIVER_DESC " : " USBVISION_VERSION_STRING);
2020                 PDEBUG(DBG_PROBE, "success");
2021         }
2022         return errCode;
2023 }
2024
2025 static void __exit usbvision_exit(void)
2026 {
2027  PDEBUG(DBG_PROBE, "");
2028
2029  usb_deregister(&usbvision_driver);
2030  PDEBUG(DBG_PROBE, "success");
2031 }
2032
2033 module_init(usbvision_init);
2034 module_exit(usbvision_exit);
2035
2036 /*
2037  * Overrides for Emacs so that we follow Linus's tabbing style.
2038  * ---------------------------------------------------------------------------
2039  * Local variables:
2040  * c-basic-offset: 8
2041  * End:
2042  */