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/version.h>
  48 #include <linux/kernel.h>
  49 #include <linux/sched.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/smp_lock.h>
  57 #include <linux/videodev.h>
  58 #include <linux/vmalloc.h>
  59 #include <linux/module.h>
  60 #include <linux/init.h>
  61 #include <linux/spinlock.h>
  62 #include <asm/io.h>
  63 #include <linux/videodev2.h>
  64 #include <linux/video_decoder.h>
  65 #include <linux/i2c.h>
  66
  67 #include <media/saa7115.h>
  68 #include <media/v4l2-common.h>
  69 #include <media/tuner.h>
  70 #include <media/audiochip.h>
  71
  72 #include <linux/moduleparam.h>
  73 #include <linux/workqueue.h>
  74
  75 #ifdef CONFIG_KMOD
  76 #include <linux/kmod.h>
  77 #endif
  78
  79 #include "usbvision.h"
  80
  81 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, Dwaine Garden <DwaineGarden@rogers.com>"
  82 #define DRIVER_NAME "usbvision"
  83 #define DRIVER_ALIAS "USBVision"
  84 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  85 #define DRIVER_LICENSE "GPL"
  86 #define USBVISION_DRIVER_VERSION_MAJOR 0
  87 #define USBVISION_DRIVER_VERSION_MINOR 9
  88 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  89 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
  90 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  91
  92 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  93
  94
  95 #ifdef USBVISION_DEBUG
  96         #define PDEBUG(level, fmt, args...) \
  97                 if (video_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
  98 #else
  99         #define PDEBUG(level, fmt, args...) do {} while(0)
 100 #endif
 101
 102 #define DBG_IOCTL       1<<0
 103 #define DBG_IO          1<<1
 104 #define DBG_PROBE       1<<2
 105 #define DBG_MMAP        1<<3
 106
 107 //String operations
 108 #define rmspace(str)    while(*str==' ') str++;
 109 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 110
 111
 112 static int usbvision_nr = 0;                    // sequential number of usbvision device
 113
 114 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 115         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 116         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 117         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 118         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 119         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 120         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 121         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 122         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 123 };
 124
 125 /* supported tv norms */
 126 static struct usbvision_tvnorm tvnorms[] = {
 127         {
 128                 .name = "PAL",
 129                 .id = V4L2_STD_PAL,
 130         }, {
 131                 .name = "NTSC",
 132                 .id = V4L2_STD_NTSC,
 133         }, {
 134                  .name = "SECAM",
 135                  .id = V4L2_STD_SECAM,
 136         }, {
 137                 .name = "PAL-M",
 138                 .id = V4L2_STD_PAL_M,
 139         }
 140 };
 141
 142 #define TVNORMS ARRAY_SIZE(tvnorms)
 143
 144 // Function prototypes
 145 static void usbvision_release(struct usb_usbvision *usbvision);
 146
 147 // Default initalization of device driver parameters
 148 static int isocMode = ISOC_MODE_COMPRESS;               // Set the default format for ISOC endpoint
 149 static int video_debug = 0;                             // Set the default Debug Mode of the device driver
 150 static int PowerOnAtOpen = 1;                           // Set the default device to power on at startup
 151 static int video_nr = -1;                               // Sequential Number of Video Device
 152 static int radio_nr = -1;                               // Sequential Number of Radio Device
 153 static int vbi_nr = -1;                                 // Sequential Number of VBI Device
 154 static char *CustomDevice=NULL;                         // Set as nothing....
 155
 156 // Grab parameters for the device driver
 157
 158 #if defined(module_param)                               // Showing parameters under SYSFS
 159 module_param(isocMode, int, 0444);
 160 module_param(video_debug, int, 0444);
 161 module_param(PowerOnAtOpen, int, 0444);
 162 module_param(video_nr, int, 0444);
 163 module_param(radio_nr, int, 0444);
 164 module_param(vbi_nr, int, 0444);
 165 module_param(CustomDevice, charp, 0444);
 166 #else                                                   // Old Style
 167 MODULE_PARAM(isocMode, "i");
 168 MODULE_PARM(video_debug, "i");                          // Grab the Debug Mode of the device driver
 169 MODULE_PARM(adjustCompression, "i");                    // Grab the compression to be adaptive
 170 MODULE_PARM(PowerOnAtOpen, "i");                        // Grab the device to power on at startup
 171 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.
 172 MODULE_PARM(video_nr, "i");                             // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
 173 MODULE_PARM(radio_nr, "i");                             // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
 174 MODULE_PARM(vbi_nr, "i");                               // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
 175 MODULE_PARM(CustomDevice, "s");                         // .... CustomDevice
 176 #endif
 177
 178 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 179 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 180 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 181 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 182 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 183 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 184 MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device.  Default: null");
 185
 186
 187 // Misc stuff
 188 MODULE_AUTHOR(DRIVER_AUTHOR);
 189 MODULE_DESCRIPTION(DRIVER_DESC);
 190 MODULE_LICENSE(DRIVER_LICENSE);
 191 MODULE_VERSION(USBVISION_VERSION_STRING);
 192 MODULE_ALIAS(DRIVER_ALIAS);
 193
 194
 195 /****************************************************************************************/
 196 /* SYSFS Code - Copied from the stv680.c usb module.                                    */
 197 /* Device information is located at /sys/class/video4linux/video0                       */
 198 /* Device parameters information is located at /sys/module/usbvision                    */
 199 /* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
 200 /****************************************************************************************/
 201
 202
 203 #define YES_NO(x) ((x) ? "Yes" : "No")
 204
 205 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 206 {
 207         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 208         return video_get_drvdata(vdev);
 209 }
 210
 211 static ssize_t show_version(struct class_device *cd, char *buf)
 212 {
 213         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 214 }
 215 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 216
 217 static ssize_t show_model(struct class_device *cd, char *buf)
 218 {
 219         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 220         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 221         return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
 222 }
 223 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 224
 225 static ssize_t show_hue(struct class_device *cd, char *buf)
 226 {
 227         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 228         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 229         struct v4l2_control ctrl;
 230         ctrl.id = V4L2_CID_HUE;
 231         ctrl.value = 0;
 232         if(usbvision->user)
 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 *cd, char *buf)
 239 {
 240         struct video_device *vdev = 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_CONTRAST;
 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 >> 8);
 248 }
 249 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 250
 251 static ssize_t show_brightness(struct class_device *cd, char *buf)
 252 {
 253         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 254         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 255         struct v4l2_control ctrl;
 256         ctrl.id = V4L2_CID_BRIGHTNESS;
 257         ctrl.value = 0;
 258         if(usbvision->user)
 259                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 260         return sprintf(buf, "%d\n", ctrl.value >> 8);
 261 }
 262 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 263
 264 static ssize_t show_saturation(struct class_device *cd, char *buf)
 265 {
 266         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 267         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 268         struct v4l2_control ctrl;
 269         ctrl.id = V4L2_CID_SATURATION;
 270         ctrl.value = 0;
 271         if(usbvision->user)
 272                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 273         return sprintf(buf, "%d\n", ctrl.value >> 8);
 274 }
 275 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 276
 277 static ssize_t show_streaming(struct class_device *cd, char *buf)
 278 {
 279         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 280         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 281         return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
 282 }
 283 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 284
 285 static ssize_t show_compression(struct class_device *cd, char *buf)
 286 {
 287         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 288         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 289         return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 290 }
 291 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 292
 293 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
 294 {
 295         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 296         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 297         return sprintf(buf, "%d\n", usbvision->bridgeType);
 298 }
 299 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 300
 301 static void usbvision_create_sysfs(struct video_device *vdev)
 302 {
 303         int res;
 304         if (!vdev)
 305                 return;
 306         do {
 307                 res=class_device_create_file(&vdev->class_dev,
 308                                              &class_device_attr_version);
 309                 if (res<0)
 310                         break;
 311                 res=class_device_create_file(&vdev->class_dev,
 312                                              &class_device_attr_model);
 313                 if (res<0)
 314                         break;
 315                 res=class_device_create_file(&vdev->class_dev,
 316                                              &class_device_attr_hue);
 317                 if (res<0)
 318                         break;
 319                 res=class_device_create_file(&vdev->class_dev,
 320                                              &class_device_attr_contrast);
 321                 if (res<0)
 322                         break;
 323                 res=class_device_create_file(&vdev->class_dev,
 324                                              &class_device_attr_brightness);
 325                 if (res<0)
 326                         break;
 327                 res=class_device_create_file(&vdev->class_dev,
 328                                              &class_device_attr_saturation);
 329                 if (res<0)
 330                         break;
 331                 res=class_device_create_file(&vdev->class_dev,
 332                                              &class_device_attr_streaming);
 333                 if (res<0)
 334                         break;
 335                 res=class_device_create_file(&vdev->class_dev,
 336                                              &class_device_attr_compression);
 337                 if (res<0)
 338                         break;
 339                 res=class_device_create_file(&vdev->class_dev,
 340                                              &class_device_attr_bridge);
 341                 if (res>=0)
 342                         return;
 343         } while (0);
 344
 345         err("%s error: %d\n", __FUNCTION__, res);
 346 }
 347
 348 static void usbvision_remove_sysfs(struct video_device *vdev)
 349 {
 350         if (vdev) {
 351                 class_device_remove_file(&vdev->class_dev,
 352                                          &class_device_attr_version);
 353                 class_device_remove_file(&vdev->class_dev,
 354                                          &class_device_attr_model);
 355                 class_device_remove_file(&vdev->class_dev,
 356                                          &class_device_attr_hue);
 357                 class_device_remove_file(&vdev->class_dev,
 358                                          &class_device_attr_contrast);
 359                 class_device_remove_file(&vdev->class_dev,
 360                                          &class_device_attr_brightness);
 361                 class_device_remove_file(&vdev->class_dev,
 362                                          &class_device_attr_saturation);
 363                 class_device_remove_file(&vdev->class_dev,
 364                                          &class_device_attr_streaming);
 365                 class_device_remove_file(&vdev->class_dev,
 366                                          &class_device_attr_compression);
 367                 class_device_remove_file(&vdev->class_dev,
 368                                          &class_device_attr_bridge);
 369         }
 370 }
 371
 372
 373 /*
 374  * usbvision_open()
 375  *
 376  * This is part of Video 4 Linux API. The driver can be opened by one
 377  * client only (checks internal counter 'usbvision->user'). The procedure
 378  * then allocates buffers needed for video processing.
 379  *
 380  */
 381 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 382 {
 383         struct video_device *dev = video_devdata(file);
 384         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 385         int errCode = 0;
 386
 387         PDEBUG(DBG_IO, "open");
 388
 389
 390         usbvision_reset_powerOffTimer(usbvision);
 391
 392         if (usbvision->user)
 393                 errCode = -EBUSY;
 394         else {
 395                 /* Allocate memory for the frame buffers */
 396                 errCode = usbvision_frames_alloc(usbvision);
 397                 if(!errCode) {
 398                         /* Allocate memory for the scratch ring buffer */
 399                         errCode = usbvision_scratch_alloc(usbvision);
 400                         if ((!errCode) && (isocMode==ISOC_MODE_COMPRESS)) {
 401                                 /* Allocate intermediate decompression buffers only if needed */
 402                                 errCode = usbvision_decompress_alloc(usbvision);
 403                         }
 404                 }
 405                 if (errCode) {
 406                         /* Deallocate all buffers if trouble */
 407                         usbvision_frames_free(usbvision);
 408                         usbvision_scratch_free(usbvision);
 409                         usbvision_decompress_free(usbvision);
 410                 }
 411         }
 412
 413         /* If so far no errors then we shall start the camera */
 414         if (!errCode) {
 415                 down(&usbvision->lock);
 416                 if (usbvision->power == 0) {
 417                         usbvision_power_on(usbvision);
 418                         usbvision_init_i2c(usbvision);
 419                 }
 420
 421                 /* Send init sequence only once, it's large! */
 422                 if (!usbvision->initialized) {
 423                         int setup_ok = 0;
 424                         setup_ok = usbvision_setup(usbvision,isocMode);
 425                         if (setup_ok)
 426                                 usbvision->initialized = 1;
 427                         else
 428                                 errCode = -EBUSY;
 429                 }
 430
 431                 if (!errCode) {
 432                         usbvision_begin_streaming(usbvision);
 433                         errCode = usbvision_init_isoc(usbvision);
 434                         /* device needs to be initialized before isoc transfer */
 435                         usbvision_muxsel(usbvision,0);
 436                         usbvision->user++;
 437                 }
 438                 else {
 439                         if (PowerOnAtOpen) {
 440                                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
 441                                 usbvision_power_off(usbvision);
 442                                 usbvision->initialized = 0;
 443                         }
 444                 }
 445                 up(&usbvision->lock);
 446         }
 447
 448         if (errCode) {
 449         }
 450
 451         /* prepare queues */
 452         usbvision_empty_framequeues(usbvision);
 453
 454         PDEBUG(DBG_IO, "success");
 455         return errCode;
 456 }
 457
 458 /*
 459  * usbvision_v4l2_close()
 460  *
 461  * This is part of Video 4 Linux API. The procedure
 462  * stops streaming and deallocates all buffers that were earlier
 463  * allocated in usbvision_v4l2_open().
 464  *
 465  */
 466 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 467 {
 468         struct video_device *dev = video_devdata(file);
 469         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 470
 471         PDEBUG(DBG_IO, "close");
 472         down(&usbvision->lock);
 473
 474         usbvision_audio_off(usbvision);
 475         usbvision_restart_isoc(usbvision);
 476         usbvision_stop_isoc(usbvision);
 477
 478         usbvision_decompress_free(usbvision);
 479         usbvision_frames_free(usbvision);
 480         usbvision_scratch_free(usbvision);
 481
 482         usbvision->user--;
 483
 484         if (PowerOnAtOpen) {
 485                 /* power off in a little while to avoid off/on every close/open short sequences */
 486                 usbvision_set_powerOffTimer(usbvision);
 487                 usbvision->initialized = 0;
 488         }
 489
 490         up(&usbvision->lock);
 491
 492         if (usbvision->remove_pending) {
 493                 info("%s: Final disconnect", __FUNCTION__);
 494                 usbvision_release(usbvision);
 495         }
 496
 497         PDEBUG(DBG_IO, "success");
 498
 499
 500         return 0;
 501 }
 502
 503
 504 /*
 505  * usbvision_ioctl()
 506  *
 507  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 508  *
 509  */
 510 static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
 511                                  unsigned int cmd, void *arg)
 512 {
 513         struct video_device *dev = video_devdata(file);
 514         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 515
 516         if (!USBVISION_IS_OPERATIONAL(usbvision))
 517                 return -EFAULT;
 518
 519         switch (cmd) {
 520
 521 #ifdef CONFIG_VIDEO_ADV_DEBUG
 522                 /* ioctls to allow direct acces to the NT100x registers */
 523                 case VIDIOC_INT_G_REGISTER:
 524                 {
 525                         struct v4l2_register *reg = arg;
 526                         int errCode;
 527
 528                         if (reg->i2c_id != 0)
 529                                 return -EINVAL;
 530                         /* NT100x has a 8-bit register space */
 531                         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 532                         if (errCode < 0) {
 533                                 err("%s: VIDIOC_INT_G_REGISTER failed: error %d", __FUNCTION__, errCode);
 534                         }
 535                         else {
 536                                 reg->val=(unsigned char)errCode;
 537                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_G_REGISTER reg=0x%02X, value=0x%02X",
 538                                                         (unsigned int)reg->reg, reg->val);
 539                                 errCode = 0; // No error
 540                         }
 541                         return errCode;
 542                 }
 543                 case VIDIOC_INT_S_REGISTER:
 544                 {
 545                         struct v4l2_register *reg = arg;
 546                         int errCode;
 547
 548                         if (reg->i2c_id != 0)
 549                                 return -EINVAL;
 550                         if (!capable(CAP_SYS_ADMIN))
 551                                 return -EPERM;
 552                         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 553                         if (errCode < 0) {
 554                                 err("%s: VIDIOC_INT_S_REGISTER failed: error %d", __FUNCTION__, errCode);
 555                         }
 556                         else {
 557                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_S_REGISTER reg=0x%02X, value=0x%02X",
 558                                                         (unsigned int)reg->reg, reg->val);
 559                                 errCode = 0;
 560                         }
 561                         return 0;
 562                 }
 563 #endif
 564                 case VIDIOC_QUERYCAP:
 565                 {
 566                         struct v4l2_capability *vc=arg;
 567
 568                         memset(vc, 0, sizeof(*vc));
 569                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 570                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
 571                                 sizeof(vc->card));
 572                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 573                                 sizeof(vc->bus_info));
 574                         vc->version = USBVISION_DRIVER_VERSION;
 575                         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 576                                 V4L2_CAP_AUDIO |
 577                                 V4L2_CAP_READWRITE |
 578                                 V4L2_CAP_STREAMING |
 579                                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 580                         PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
 581                         return 0;
 582                 }
 583                 case VIDIOC_ENUMINPUT:
 584                 {
 585                         struct v4l2_input *vi = arg;
 586                         int chan;
 587
 588                         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 589                                 return -EINVAL;
 590                         if (usbvision->have_tuner) {
 591                                 chan = vi->index;
 592                         }
 593                         else {
 594                                 chan = vi->index + 1; //skip Television string
 595                         }
 596                         switch(chan) {
 597                                 case 0:
 598                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 599                                                 strcpy(vi->name, "White Video Input");
 600                                         }
 601                                         else {
 602                                                 strcpy(vi->name, "Television");
 603                                                 vi->type = V4L2_INPUT_TYPE_TUNER;
 604                                                 vi->audioset = 1;
 605                                                 vi->tuner = chan;
 606                                                 vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
 607                                         }
 608                                         break;
 609                                 case 1:
 610                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 611                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 612                                                 strcpy(vi->name, "Green Video Input");
 613                                         }
 614                                         else {
 615                                                 strcpy(vi->name, "Composite Video Input");
 616                                         }
 617                                         vi->std = V4L2_STD_PAL;
 618                                         break;
 619                                 case 2:
 620                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 621                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 622                                                 strcpy(vi->name, "Yellow Video Input");
 623                                         }
 624                                         else {
 625                                         strcpy(vi->name, "S-Video Input");
 626                                         }
 627                                         vi->std = V4L2_STD_PAL;
 628                                         break;
 629                                 case 3:
 630                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 631                                         strcpy(vi->name, "Red Video Input");
 632                                         vi->std = V4L2_STD_PAL;
 633                                         break;
 634                         }
 635                         PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x",
 636                                vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
 637                         return 0;
 638                 }
 639                 case VIDIOC_ENUMSTD:
 640                 {
 641                         struct v4l2_standard *e = arg;
 642                         unsigned int i;
 643                         int ret;
 644
 645                         i = e->index;
 646                         if (i >= TVNORMS)
 647                                 return -EINVAL;
 648                         ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
 649                                                        tvnorms[e->index].name);
 650                         e->index = i;
 651                         if (ret < 0)
 652                                 return ret;
 653                         return 0;
 654                 }
 655                 case VIDIOC_G_INPUT:
 656                 {
 657                         int *input = arg;
 658                         *input = usbvision->ctl_input;
 659                         return 0;
 660                 }
 661                 case VIDIOC_S_INPUT:
 662                 {
 663                         int *input = arg;
 664                         if ((*input >= usbvision->video_inputs) || (*input < 0) )
 665                                 return -EINVAL;
 666                         usbvision->ctl_input = *input;
 667
 668                         down(&usbvision->lock);
 669                         usbvision_muxsel(usbvision, usbvision->ctl_input);
 670                         usbvision_set_input(usbvision);
 671                         usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
 672                         up(&usbvision->lock);
 673                         return 0;
 674                 }
 675                 case VIDIOC_G_STD:
 676                 {
 677                         v4l2_std_id *id = arg;
 678
 679                         *id = usbvision->tvnorm->id;
 680
 681                         PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
 682                         return 0;
 683                 }
 684                 case VIDIOC_S_STD:
 685                 {
 686                         v4l2_std_id *id = arg;
 687                         unsigned int i;
 688
 689                         for (i = 0; i < TVNORMS; i++)
 690                                 if (*id == tvnorms[i].id)
 691                                         break;
 692                         if (i == TVNORMS)
 693                                 for (i = 0; i < TVNORMS; i++)
 694                                         if (*id & tvnorms[i].id)
 695                                                 break;
 696                         if (i == TVNORMS)
 697                                 return -EINVAL;
 698
 699                         down(&usbvision->lock);
 700                         usbvision->tvnorm = &tvnorms[i];
 701
 702                         call_i2c_clients(usbvision, VIDIOC_S_STD,
 703                                          &usbvision->tvnorm->id);
 704
 705                         up(&usbvision->lock);
 706
 707                         PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
 708                         return 0;
 709                 }
 710                 case VIDIOC_G_TUNER:
 711                 {
 712                         struct v4l2_tuner *vt = arg;
 713
 714                         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 715                                 return -EINVAL;
 716                         strcpy(vt->name, "Television");
 717                         /* Let clients fill in the remainder of this struct */
 718                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 719
 720                         PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
 721                         return 0;
 722                 }
 723                 case VIDIOC_S_TUNER:
 724                 {
 725                         struct v4l2_tuner *vt = arg;
 726
 727                         // Only no or one tuner for now
 728                         if (!usbvision->have_tuner || vt->index)
 729                                 return -EINVAL;
 730                         /* let clients handle this */
 731                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 732
 733                         PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
 734                         return 0;
 735                 }
 736                 case VIDIOC_G_FREQUENCY:
 737                 {
 738                         struct v4l2_frequency *freq = arg;
 739
 740                         freq->tuner = 0; // Only one tuner
 741                         freq->type = V4L2_TUNER_ANALOG_TV;
 742                         freq->frequency = usbvision->freq;
 743                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 744                         return 0;
 745                 }
 746                 case VIDIOC_S_FREQUENCY:
 747                 {
 748                         struct v4l2_frequency *freq = arg;
 749
 750                         // Only no or one tuner for now
 751                         if (!usbvision->have_tuner || freq->tuner)
 752                                 return -EINVAL;
 753
 754                         usbvision->freq = freq->frequency;
 755                         call_i2c_clients(usbvision, cmd, freq);
 756                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 757                         return 0;
 758                 }
 759                 case VIDIOC_G_AUDIO:
 760                 {
 761                         struct v4l2_audio *v = arg;
 762                         memset(v,0, sizeof(v));
 763                         strcpy(v->name, "TV");
 764                         PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
 765                         return 0;
 766                 }
 767                 case VIDIOC_S_AUDIO:
 768                 {
 769                         struct v4l2_audio *v = arg;
 770                         if(v->index) {
 771                                 return -EINVAL;
 772                         }
 773                         PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
 774                         return 0;
 775                 }
 776                 case VIDIOC_QUERYCTRL:
 777                 {
 778                         struct v4l2_queryctrl *ctrl = arg;
 779                         int id=ctrl->id;
 780
 781                         memset(ctrl,0,sizeof(*ctrl));
 782                         ctrl->id=id;
 783
 784                         call_i2c_clients(usbvision, cmd, arg);
 785
 786                         if (ctrl->type)
 787                                 return 0;
 788                         else
 789                                 return -EINVAL;
 790
 791                         PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
 792                 }
 793                 case VIDIOC_G_CTRL:
 794                 {
 795                         struct v4l2_control *ctrl = arg;
 796                         PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 797                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 798                         return 0;
 799                 }
 800                 case VIDIOC_S_CTRL:
 801                 {
 802                         struct v4l2_control *ctrl = arg;
 803
 804                         PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 805                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 806                         return 0;
 807                 }
 808                 case VIDIOC_REQBUFS:
 809                 {
 810                         struct v4l2_requestbuffers *vr = arg;
 811                         int ret;
 812
 813                         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 814
 815                         // Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
 816                         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 817                            (vr->memory != V4L2_MEMORY_MMAP))
 818                                 return -EINVAL;
 819
 820                         if(usbvision->streaming == Stream_On) {
 821                                 if ((ret = usbvision_stream_interrupt(usbvision)))
 822                                     return ret;
 823                         }
 824
 825                         usbvision_empty_framequeues(usbvision);
 826
 827                         usbvision->curFrame = NULL;
 828
 829                         PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
 830                         return 0;
 831                 }
 832                 case VIDIOC_QUERYBUF:
 833                 {
 834                         struct v4l2_buffer *vb = arg;
 835                         struct usbvision_frame *frame;
 836
 837                         // FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
 838
 839                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 840                                 return -EINVAL;
 841                         }
 842                         if(vb->index>=USBVISION_NUMFRAMES)  {
 843                                 return -EINVAL;
 844                         }
 845                         // Updating the corresponding frame state
 846                         vb->flags = 0;
 847                         frame = &usbvision->frame[vb->index];
 848                         if(frame->grabstate >= FrameState_Ready)
 849                                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 850                         if(frame->grabstate >= FrameState_Done)
 851                                 vb->flags |= V4L2_BUF_FLAG_DONE;
 852                         if(frame->grabstate == FrameState_Unused)
 853                                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 854                         vb->memory = V4L2_MEMORY_MMAP;
 855
 856                         vb->m.offset = vb->index*usbvision->max_frame_size;
 857
 858                         vb->memory = V4L2_MEMORY_MMAP;
 859                         vb->field = V4L2_FIELD_NONE;
 860                         vb->length = usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel;
 861                         vb->timestamp = usbvision->frame[vb->index].timestamp;
 862                         vb->sequence = usbvision->frame[vb->index].sequence;
 863                         return 0;
 864                 }
 865                 case VIDIOC_QBUF:
 866                 {
 867                         struct v4l2_buffer *vb = arg;
 868                         struct usbvision_frame *frame;
 869                         unsigned long lock_flags;
 870
 871                         // FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
 872                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 873                                 return -EINVAL;
 874                         }
 875                         if(vb->index>=USBVISION_NUMFRAMES)  {
 876                                 return -EINVAL;
 877                         }
 878
 879                         frame = &usbvision->frame[vb->index];
 880
 881                         if (frame->grabstate != FrameState_Unused) {
 882                                 return -EAGAIN;
 883                         }
 884
 885                         /* Mark it as ready and enqueue frame */
 886                         frame->grabstate = FrameState_Ready;
 887                         frame->scanstate = ScanState_Scanning;
 888                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 889
 890                         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 891
 892                         /* set v4l2_format index */
 893                         frame->v4l2_format = usbvision->palette;
 894
 895                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 896                         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 897                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 898
 899                         PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
 900                         return 0;
 901                 }
 902                 case VIDIOC_DQBUF:
 903                 {
 904                         struct v4l2_buffer *vb = arg;
 905                         int ret;
 906                         struct usbvision_frame *f;
 907                         unsigned long lock_flags;
 908
 909                         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 910                                 return -EINVAL;
 911
 912                         if (list_empty(&(usbvision->outqueue))) {
 913                                 if (usbvision->streaming == Stream_Idle)
 914                                         return -EINVAL;
 915                                 ret = wait_event_interruptible
 916                                         (usbvision->wait_frame,
 917                                          !list_empty(&(usbvision->outqueue)));
 918                                 if (ret)
 919                                         return ret;
 920                         }
 921
 922                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 923                         f = list_entry(usbvision->outqueue.next,
 924                                        struct usbvision_frame, frame);
 925                         list_del(usbvision->outqueue.next);
 926                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 927
 928                         f->grabstate = FrameState_Unused;
 929
 930                         vb->memory = V4L2_MEMORY_MMAP;
 931                         vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
 932                         vb->index = f->index;
 933                         vb->sequence = f->sequence;
 934                         vb->timestamp = f->timestamp;
 935                         vb->field = V4L2_FIELD_NONE;
 936                         vb->bytesused = f->scanlength;
 937
 938                         return 0;
 939                 }
 940                 case VIDIOC_STREAMON:
 941                 {
 942                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 943
 944                         usbvision->streaming = Stream_On;
 945
 946                         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 947
 948                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
 949
 950                         return 0;
 951                 }
 952                 case VIDIOC_STREAMOFF:
 953                 {
 954                         int *type = arg;
 955                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 956
 957                         if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 958                                 return -EINVAL;
 959
 960                         if(usbvision->streaming == Stream_On) {
 961                                 usbvision_stream_interrupt(usbvision);
 962                                 // Stop all video streamings
 963                                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 964                         }
 965                         usbvision_empty_framequeues(usbvision);
 966
 967                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
 968                         return 0;
 969                 }
 970                 case VIDIOC_ENUM_FMT:
 971                 {
 972                         struct v4l2_fmtdesc *vfd = arg;
 973
 974                         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 975                                 return -EINVAL;
 976                         }
 977                         vfd->flags = 0;
 978                         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 979                         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 980                         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 981                         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 982                         return 0;
 983                 }
 984                 case VIDIOC_G_FMT:
 985                 {
 986                         struct v4l2_format *vf = arg;
 987
 988                         switch (vf->type) {
 989                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 990                                 {
 991                                         vf->fmt.pix.width = usbvision->curwidth;
 992                                         vf->fmt.pix.height = usbvision->curheight;
 993                                         vf->fmt.pix.pixelformat = usbvision->palette.format;
 994                                         vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 995                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 996                                         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 997                                         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 998                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d, format=%s",
 999                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1000                                         return 0;
1001                                 }
1002                                 default:
1003                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
1004                                         return -EINVAL;
1005                         }
1006                         return 0;
1007                 }
1008                 case VIDIOC_TRY_FMT:
1009                 case VIDIOC_S_FMT:
1010                 {
1011                         struct v4l2_format *vf = arg;
1012                         int formatIdx,ret;
1013
1014                         switch(vf->type) {
1015                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1016                                 {
1017                                         /* Find requested format in available ones */
1018                                         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1019                                                 if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
1020                                                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1021                                                         break;
1022                                                 }
1023                                         }
1024                                         /* robustness */
1025                                         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1026                                                 return -EINVAL;
1027                                         }
1028                                         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1029                                         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1030
1031                                         vf->fmt.pix.bytesperline = vf->fmt.pix.width*usbvision->palette.bytes_per_pixel;
1032                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1033
1034                                         if(cmd == VIDIOC_TRY_FMT) {
1035                                                 PDEBUG(DBG_IOCTL, "VIDIOC_TRY_FMT grabdisplay w=%d, h=%d, format=%s",
1036                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1037                                                 return 0;
1038                                         }
1039
1040                                         /* stop io in case it is already in progress */
1041                                         if(usbvision->streaming == Stream_On) {
1042                                                 if ((ret = usbvision_stream_interrupt(usbvision)))
1043                                                         return ret;
1044                                         }
1045                                         usbvision_empty_framequeues(usbvision);
1046
1047                                         usbvision->curFrame = NULL;
1048
1049                                         // by now we are committed to the new data...
1050                                         down(&usbvision->lock);
1051                                         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1052                                         up(&usbvision->lock);
1053
1054                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
1055                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1056                                         return 0;
1057                                 }
1058                                 default:
1059                                         return -EINVAL;
1060                         }
1061                 }
1062                 default:
1063                         return -ENOIOCTLCMD;
1064         }
1065         return 0;
1066 }
1067
1068 static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
1069                        unsigned int cmd, unsigned long arg)
1070 {
1071         return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
1072 }
1073
1074
1075 static ssize_t usbvision_v4l2_read(struct file *file, char *buf,
1076                       size_t count, loff_t *ppos)
1077 {
1078         struct video_device *dev = video_devdata(file);
1079         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1080         int noblock = file->f_flags & O_NONBLOCK;
1081         unsigned long lock_flags;
1082
1083         int frmx = -1;
1084         int ret,i;
1085         struct usbvision_frame *frame;
1086
1087         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
1088
1089         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1090                 return -EFAULT;
1091
1092         /* no stream is running, make it running ! */
1093         usbvision->streaming = Stream_On;
1094         call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1095
1096         /* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
1097         for(i=0;i<USBVISION_NUMFRAMES;i++) {
1098                 frame = &usbvision->frame[i];
1099                 if(frame->grabstate == FrameState_Unused) {
1100                         /* Mark it as ready and enqueue frame */
1101                         frame->grabstate = FrameState_Ready;
1102                         frame->scanstate = ScanState_Scanning;
1103                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
1104
1105                         /* set v4l2_format index */
1106                         frame->v4l2_format = usbvision->palette;
1107
1108                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1109                         list_add_tail(&frame->frame, &usbvision->inqueue);
1110                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1111                 }
1112         }
1113
1114         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1115         if (list_empty(&(usbvision->outqueue))) {
1116                 if(noblock)
1117                         return -EAGAIN;
1118
1119                 ret = wait_event_interruptible
1120                         (usbvision->wait_frame,
1121                          !list_empty(&(usbvision->outqueue)));
1122                 if (ret)
1123                         return ret;
1124         }
1125
1126         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1127         frame = list_entry(usbvision->outqueue.next,
1128                            struct usbvision_frame, frame);
1129         list_del(usbvision->outqueue.next);
1130         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1131
1132         /* An error returns an empty frame */
1133         if (frame->grabstate == FrameState_Error) {
1134                 frame->bytes_read = 0;
1135                 return 0;
1136         }
1137
1138         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
1139                        frame->index, frame->bytes_read, frame->scanlength);
1140
1141         /* copy bytes to user space; we allow for partials reads */
1142         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1143                 count = frame->scanlength - frame->bytes_read;
1144
1145         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1146                 return -EFAULT;
1147         }
1148
1149         frame->bytes_read += count;
1150         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
1151                        (unsigned long)count, frame->bytes_read);
1152
1153         // For now, forget the frame if it has not been read in one shot.
1154 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1155                 frame->bytes_read = 0;
1156
1157                 /* Mark it as available to be used again. */
1158                 usbvision->frame[frmx].grabstate = FrameState_Unused;
1159 /*      } */
1160
1161         return count;
1162 }
1163
1164 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1165 {
1166         unsigned long size = vma->vm_end - vma->vm_start,
1167                 start = vma->vm_start;
1168         void *pos;
1169         u32 i;
1170
1171         struct video_device *dev = video_devdata(file);
1172         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1173
1174         down(&usbvision->lock);
1175
1176         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1177                 up(&usbvision->lock);
1178                 return -EFAULT;
1179         }
1180
1181         if (!(vma->vm_flags & VM_WRITE) ||
1182             size != PAGE_ALIGN(usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel)) {
1183                 up(&usbvision->lock);
1184                 return -EINVAL;
1185         }
1186
1187         for (i = 0; i < USBVISION_NUMFRAMES; i++) {
1188                 if (((usbvision->max_frame_size*i) >> PAGE_SHIFT) == vma->vm_pgoff)
1189                         break;
1190         }
1191         if (i == USBVISION_NUMFRAMES) {
1192                 PDEBUG(DBG_MMAP, "mmap: user supplied mapping address is out of range");
1193                 up(&usbvision->lock);
1194                 return -EINVAL;
1195         }
1196
1197         /* VM_IO is eventually going to replace PageReserved altogether */
1198         vma->vm_flags |= VM_IO;
1199         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1200
1201         pos = usbvision->frame[i].data;
1202         while (size > 0) {
1203
1204                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1205                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1206                         up(&usbvision->lock);
1207                         return -EAGAIN;
1208                 }
1209                 start += PAGE_SIZE;
1210                 pos += PAGE_SIZE;
1211                 size -= PAGE_SIZE;
1212         }
1213
1214         up(&usbvision->lock);
1215         return 0;
1216 }
1217
1218
1219 /*
1220  * Here comes the stuff for radio on usbvision based devices
1221  *
1222  */
1223 static int usbvision_radio_open(struct inode *inode, struct file *file)
1224 {
1225         struct video_device *dev = video_devdata(file);
1226         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1227         struct v4l2_frequency freq;
1228         int errCode = 0;
1229
1230         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1231
1232         down(&usbvision->lock);
1233
1234         if (usbvision->user) {
1235                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1236                 errCode = -EBUSY;
1237         }
1238         else {
1239                 if(PowerOnAtOpen) {
1240                         usbvision_reset_powerOffTimer(usbvision);
1241                         if (usbvision->power == 0) {
1242                                 usbvision_power_on(usbvision);
1243                                 usbvision_init_i2c(usbvision);
1244                         }
1245                 }
1246
1247                 // If so far no errors then we shall start the radio
1248                 usbvision->radio = 1;
1249                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1250                 freq.frequency = 1517; //SWR3 @ 94.8MHz
1251                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
1252                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1253                 usbvision->user++;
1254         }
1255
1256         if (errCode) {
1257                 if (PowerOnAtOpen) {
1258                         usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1259                         usbvision_power_off(usbvision);
1260                         usbvision->initialized = 0;
1261                 }
1262         }
1263         up(&usbvision->lock);
1264         return errCode;
1265 }
1266
1267
1268 static int usbvision_radio_close(struct inode *inode, struct file *file)
1269 {
1270         struct video_device *dev = video_devdata(file);
1271         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1272         int errCode = 0;
1273
1274         PDEBUG(DBG_IO, "");
1275
1276         down(&usbvision->lock);
1277
1278         usbvision_audio_off(usbvision);
1279         usbvision->radio=0;
1280         usbvision->user--;
1281
1282         if (PowerOnAtOpen) {
1283                 usbvision_set_powerOffTimer(usbvision);
1284                 usbvision->initialized = 0;
1285         }
1286
1287         up(&usbvision->lock);
1288
1289         if (usbvision->remove_pending) {
1290                 info("%s: Final disconnect", __FUNCTION__);
1291                 usbvision_release(usbvision);
1292         }
1293
1294
1295         PDEBUG(DBG_IO, "success");
1296
1297         return errCode;
1298 }
1299
1300 static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
1301                                  unsigned int cmd, void *arg)
1302 {
1303         struct video_device *dev = video_devdata(file);
1304         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1305
1306         if (!USBVISION_IS_OPERATIONAL(usbvision))
1307                 return -EIO;
1308
1309         switch (cmd) {
1310                 case VIDIOC_QUERYCAP:
1311                 {
1312                         struct v4l2_capability *vc=arg;
1313
1314                         memset(vc, 0, sizeof(*vc));
1315                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
1316                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
1317                                 sizeof(vc->card));
1318                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
1319                                 sizeof(vc->bus_info));
1320                         vc->version = USBVISION_DRIVER_VERSION;
1321                         vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
1322                         PDEBUG(DBG_IO, "VIDIOC_QUERYCAP");
1323                         return 0;
1324                 }
1325                 case VIDIOC_QUERYCTRL:
1326                 {
1327                         struct v4l2_queryctrl *ctrl = arg;
1328                         int id=ctrl->id;
1329
1330                         memset(ctrl,0,sizeof(*ctrl));
1331                         ctrl->id=id;
1332
1333                         call_i2c_clients(usbvision, cmd, arg);
1334                         PDEBUG(DBG_IO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
1335
1336                         if (ctrl->type)
1337                                 return 0;
1338                         else
1339                                 return -EINVAL;
1340
1341                 }
1342                 case VIDIOC_G_CTRL:
1343                 {
1344                         struct v4l2_control *ctrl = arg;
1345
1346                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
1347                         PDEBUG(DBG_IO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1348                         return 0;
1349                 }
1350                 case VIDIOC_S_CTRL:
1351                 {
1352                         struct v4l2_control *ctrl = arg;
1353
1354                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
1355                         PDEBUG(DBG_IO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1356                         return 0;
1357                 }
1358                 case VIDIOC_G_TUNER:
1359                 {
1360                         struct v4l2_tuner *t = arg;
1361
1362                         if (t->index > 0)
1363                                 return -EINVAL;
1364
1365                         memset(t,0,sizeof(*t));
1366                         strcpy(t->name, "Radio");
1367                         t->type = V4L2_TUNER_RADIO;
1368
1369                         /* Let clients fill in the remainder of this struct */
1370                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
1371                         PDEBUG(DBG_IO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
1372                         return 0;
1373                 }
1374                 case VIDIOC_S_TUNER:
1375                 {
1376                         struct v4l2_tuner *vt = arg;
1377
1378                         // Only no or one tuner for now
1379                         if (!usbvision->have_tuner || vt->index)
1380                                 return -EINVAL;
1381                         /* let clients handle this */
1382                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
1383
1384                         PDEBUG(DBG_IO, "VIDIOC_S_TUNER");
1385                         return 0;
1386                 }
1387                 case VIDIOC_G_AUDIO:
1388                 {
1389                         struct v4l2_audio *a = arg;
1390
1391                         memset(a,0,sizeof(*a));
1392                         strcpy(a->name,"Radio");
1393                         PDEBUG(DBG_IO, "VIDIOC_G_AUDIO");
1394                         return 0;
1395                 }
1396                 case VIDIOC_S_AUDIO:
1397                 case VIDIOC_S_INPUT:
1398                 case VIDIOC_S_STD:
1399                 return 0;
1400
1401                 case VIDIOC_G_FREQUENCY:
1402                 {
1403                         struct v4l2_frequency *f = arg;
1404
1405                         memset(f,0,sizeof(*f));
1406
1407                         f->type = V4L2_TUNER_RADIO;
1408                         f->frequency = usbvision->freq;
1409                         call_i2c_clients(usbvision, cmd, f);
1410                         PDEBUG(DBG_IO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1411
1412                         return 0;
1413                 }
1414                 case VIDIOC_S_FREQUENCY:
1415                 {
1416                         struct v4l2_frequency *f = arg;
1417
1418                         if (f->tuner != 0)
1419                                 return -EINVAL;
1420                         usbvision->freq = f->frequency;
1421                         call_i2c_clients(usbvision, cmd, f);
1422                         PDEBUG(DBG_IO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1423
1424                         return 0;
1425                 }
1426                 default:
1427                 {
1428                         PDEBUG(DBG_IO, "%s: Unknown command %x", __FUNCTION__, cmd);
1429                         return -ENOIOCTLCMD;
1430                 }
1431         }
1432         return 0;
1433 }
1434
1435
1436 static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
1437                        unsigned int cmd, unsigned long arg)
1438 {
1439         return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
1440 }
1441
1442
1443 /*
1444  * Here comes the stuff for vbi on usbvision based devices
1445  *
1446  */
1447 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1448 {
1449         /* TODO */
1450         return -EINVAL;
1451
1452 }
1453
1454 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1455 {
1456         /* TODO */
1457         return -EINVAL;
1458 }
1459
1460 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1461                                  unsigned int cmd, void *arg)
1462 {
1463         /* TODO */
1464         return -EINVAL;
1465 }
1466
1467 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1468                        unsigned int cmd, unsigned long arg)
1469 {
1470         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1471 }
1472
1473
1474 //
1475 // Video registration stuff
1476 //
1477
1478 // Video template
1479 static struct file_operations usbvision_fops = {
1480         .owner             = THIS_MODULE,
1481         .open           = usbvision_v4l2_open,
1482         .release        = usbvision_v4l2_close,
1483         .read           = usbvision_v4l2_read,
1484         .mmap           = usbvision_v4l2_mmap,
1485         .ioctl          = usbvision_v4l2_ioctl,
1486         .llseek         = no_llseek,
1487 };
1488 static struct video_device usbvision_video_template = {
1489         .owner             = THIS_MODULE,
1490         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1491         .hardware       = VID_HARDWARE_USBVISION,
1492         .fops           = &usbvision_fops,
1493         .name           = "usbvision-video",
1494         .release        = video_device_release,
1495         .minor          = -1,
1496 };
1497
1498
1499 // Radio template
1500 static struct file_operations usbvision_radio_fops = {
1501         .owner             = THIS_MODULE,
1502         .open           = usbvision_radio_open,
1503         .release        = usbvision_radio_close,
1504         .ioctl          = usbvision_radio_ioctl,
1505         .llseek         = no_llseek,
1506 };
1507
1508 static struct video_device usbvision_radio_template=
1509 {
1510         .owner             = THIS_MODULE,
1511         .type           = VID_TYPE_TUNER,
1512         .hardware       = VID_HARDWARE_USBVISION,
1513         .fops           = &usbvision_radio_fops,
1514         .release        = video_device_release,
1515         .name           = "usbvision-radio",
1516         .minor          = -1,
1517 };
1518
1519
1520 // vbi template
1521 static struct file_operations usbvision_vbi_fops = {
1522         .owner             = THIS_MODULE,
1523         .open           = usbvision_vbi_open,
1524         .release        = usbvision_vbi_close,
1525         .ioctl          = usbvision_vbi_ioctl,
1526         .llseek         = no_llseek,
1527 };
1528
1529 static struct video_device usbvision_vbi_template=
1530 {
1531         .owner             = THIS_MODULE,
1532         .type           = VID_TYPE_TUNER,
1533         .hardware       = VID_HARDWARE_USBVISION,
1534         .fops           = &usbvision_vbi_fops,
1535         .release        = video_device_release,
1536         .name           = "usbvision-vbi",
1537         .minor          = -1,
1538 };
1539
1540
1541 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1542                                         struct video_device *vdev_template,
1543                                         char *name)
1544 {
1545         struct usb_device *usb_dev = usbvision->dev;
1546         struct video_device *vdev;
1547
1548         if (usb_dev == NULL) {
1549                 err("%s: usbvision->dev is not set", __FUNCTION__);
1550                 return NULL;
1551         }
1552
1553         vdev = video_device_alloc();
1554         if (NULL == vdev) {
1555                 return NULL;
1556         }
1557         *vdev = *vdev_template;
1558 //      vdev->minor   = -1;
1559         vdev->dev     = &usb_dev->dev;
1560         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1561         video_set_drvdata(vdev, usbvision);
1562         return vdev;
1563 }
1564
1565 // unregister video4linux devices
1566 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1567 {
1568         // vbi Device:
1569         if (usbvision->vbi) {
1570                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
1571                 if (usbvision->vbi->minor != -1) {
1572                         video_unregister_device(usbvision->vbi);
1573                 }
1574                 else {
1575                         video_device_release(usbvision->vbi);
1576                 }
1577                 usbvision->vbi = NULL;
1578         }
1579
1580         // Radio Device:
1581         if (usbvision->rdev) {
1582                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
1583                 if (usbvision->rdev->minor != -1) {
1584                         video_unregister_device(usbvision->rdev);
1585                 }
1586                 else {
1587                         video_device_release(usbvision->rdev);
1588                 }
1589                 usbvision->rdev = NULL;
1590         }
1591
1592         // Video Device:
1593         if (usbvision->vdev) {
1594                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
1595                 if (usbvision->vdev->minor != -1) {
1596                         video_unregister_device(usbvision->vdev);
1597                 }
1598                 else {
1599                         video_device_release(usbvision->vdev);
1600                 }
1601                 usbvision->vdev = NULL;
1602         }
1603 }
1604
1605 // register video4linux devices
1606 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1607 {
1608         // Video Device:
1609         usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
1610         if (usbvision->vdev == NULL) {
1611                 goto err_exit;
1612         }
1613         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
1614                 goto err_exit;
1615         }
1616         info("USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]", usbvision->nr,usbvision->vdev->minor & 0x1f);
1617
1618         // Radio Device:
1619         if (usbvision_device_data[usbvision->DevModel].Radio) {
1620                 // usbvision has radio
1621                 usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
1622                 if (usbvision->rdev == NULL) {
1623                         goto err_exit;
1624                 }
1625                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
1626                         goto err_exit;
1627                 }
1628                 info("USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]", usbvision->nr, usbvision->rdev->minor & 0x1f);
1629         }
1630         // vbi Device:
1631         if (usbvision_device_data[usbvision->DevModel].vbi) {
1632                 usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
1633                 if (usbvision->vdev == NULL) {
1634                         goto err_exit;
1635                 }
1636                 if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
1637                         goto err_exit;
1638                 }
1639                 info("USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)", usbvision->nr,usbvision->vbi->minor & 0x1f);
1640         }
1641         // all done
1642         return 0;
1643
1644  err_exit:
1645         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1646         usbvision_unregister_video(usbvision);
1647         return -1;
1648 }
1649
1650 /*
1651  * usbvision_alloc()
1652  *
1653  * This code allocates the struct usb_usbvision. It is filled with default values.
1654  *
1655  * Returns NULL on error, a pointer to usb_usbvision else.
1656  *
1657  */
1658 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1659 {
1660         struct usb_usbvision *usbvision;
1661
1662         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
1663                 goto err_exit;
1664         }
1665
1666         usbvision->dev = dev;
1667
1668         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1669
1670         // prepare control urb for control messages during interrupts
1671         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1672         if (usbvision->ctrlUrb == NULL) {
1673                 goto err_exit;
1674         }
1675         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1676         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1677
1678         usbvision_init_powerOffTimer(usbvision);
1679
1680         return usbvision;
1681
1682 err_exit:
1683         if (usbvision && usbvision->ctrlUrb) {
1684                 usb_free_urb(usbvision->ctrlUrb);
1685         }
1686         if (usbvision) {
1687                 kfree(usbvision);
1688         }
1689         return NULL;
1690 }
1691
1692 /*
1693  * usbvision_release()
1694  *
1695  * This code does final release of struct usb_usbvision. This happens
1696  * after the device is disconnected -and- all clients closed their files.
1697  *
1698  */
1699 static void usbvision_release(struct usb_usbvision *usbvision)
1700 {
1701         PDEBUG(DBG_PROBE, "");
1702
1703         down(&usbvision->lock);
1704
1705         usbvision_reset_powerOffTimer(usbvision);
1706
1707         usbvision->initialized = 0;
1708
1709         up(&usbvision->lock);
1710
1711         usbvision_remove_sysfs(usbvision->vdev);
1712         usbvision_unregister_video(usbvision);
1713
1714         if (usbvision->ctrlUrb) {
1715                 usb_free_urb(usbvision->ctrlUrb);
1716         }
1717
1718         kfree(usbvision);
1719
1720         PDEBUG(DBG_PROBE, "success");
1721 }
1722
1723
1724 /******************************** usb interface *****************************************/
1725
1726 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1727 {
1728         int model,i;
1729
1730         if (usbvision == NULL)
1731                 return;
1732
1733         model = usbvision->DevModel;
1734         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1735
1736         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
1737                 usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
1738         } else {
1739                 usbvision->Vin_Reg2_Preset = 0;
1740         }
1741
1742         for (i = 0; i < TVNORMS; i++)
1743                 if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
1744                         break;
1745         if (i == TVNORMS)
1746                 i = 0;
1747         usbvision->tvnorm = &tvnorms[i];        /* set default norm */
1748
1749         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1750         usbvision->ctl_input = 0;
1751
1752         /* This should be here to make i2c clients to be able to register */
1753         usbvision_audio_off(usbvision); //first switch off audio
1754         if (!PowerOnAtOpen) {
1755                 usbvision_power_on(usbvision);  //and then power up the noisy tuner
1756                 usbvision_init_i2c(usbvision);
1757         }
1758 }
1759
1760 /*
1761  * usbvision_probe()
1762  *
1763  * This procedure queries device descriptor and accepts the interface
1764  * if it looks like USBVISION video device
1765  *
1766  */
1767 static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
1768 {
1769         struct usb_device *dev = interface_to_usbdev(intf);
1770         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1771         const struct usb_host_interface *interface;
1772         struct usb_usbvision *usbvision = NULL;
1773         const struct usb_endpoint_descriptor *endpoint;
1774         int model;
1775
1776         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1777                                         dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
1778         /* Is it an USBVISION video dev? */
1779         model = 0;
1780         for(model = 0; usbvision_device_data[model].idVendor; model++) {
1781                 if (le16_to_cpu(dev->descriptor.idVendor) != usbvision_device_data[model].idVendor) {
1782                         continue;
1783                 }
1784                 if (le16_to_cpu(dev->descriptor.idProduct) != usbvision_device_data[model].idProduct) {
1785                         continue;
1786                 }
1787
1788                 info("%s: %s found", __FUNCTION__, usbvision_device_data[model].ModelString);
1789                 break;
1790         }
1791
1792         if (usbvision_device_data[model].idVendor == 0) {
1793                 return -ENODEV; //no matching device
1794         }
1795         if (usbvision_device_data[model].Interface >= 0) {
1796                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1797         }
1798         else {
1799                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1800         }
1801         endpoint = &interface->endpoint[1].desc;
1802         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
1803                 err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
1804                 err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
1805                 return -ENODEV;
1806         }
1807         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1808                 err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
1809                 return -ENODEV;
1810         }
1811
1812         usb_get_dev(dev);
1813
1814         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1815                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1816                 return -ENOMEM;
1817         }
1818         if (dev->descriptor.bNumConfigurations > 1) {
1819                 usbvision->bridgeType = BRIDGE_NT1004;
1820         }
1821         else if (usbvision_device_data[model].ModelString == "Dazzle Fusion Model DVC-90 Rev 1 (SECAM)") {
1822                 usbvision->bridgeType = BRIDGE_NT1005;
1823         }
1824         else {
1825                 usbvision->bridgeType = BRIDGE_NT1003;
1826         }
1827         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1828
1829         down(&usbvision->lock);
1830
1831         usbvision->nr = usbvision_nr++;
1832
1833         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1834         if (usbvision->have_tuner) {
1835                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1836         }
1837
1838         usbvision->tuner_addr = ADDR_UNSET;
1839
1840         usbvision->DevModel = model;
1841         usbvision->remove_pending = 0;
1842         usbvision->iface = ifnum;
1843         usbvision->ifaceAltInactive = 0;
1844         usbvision->ifaceAltActive = 1;
1845         usbvision->video_endp = endpoint->bEndpointAddress;
1846         usbvision->isocPacketSize = 0;
1847         usbvision->usb_bandwidth = 0;
1848         usbvision->user = 0;
1849         usbvision->streaming = Stream_Off;
1850         usbvision_register_video(usbvision);
1851         usbvision_configure_video(usbvision);
1852         up(&usbvision->lock);
1853
1854
1855         usb_set_intfdata (intf, usbvision);
1856         usbvision_create_sysfs(usbvision->vdev);
1857
1858         PDEBUG(DBG_PROBE, "success");
1859         return 0;
1860 }
1861
1862
1863 /*
1864  * usbvision_disconnect()
1865  *
1866  * This procedure stops all driver activity, deallocates interface-private
1867  * structure (pointed by 'ptr') and after that driver should be removable
1868  * with no ill consequences.
1869  *
1870  */
1871 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1872 {
1873         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1874
1875         PDEBUG(DBG_PROBE, "");
1876
1877         if (usbvision == NULL) {
1878                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1879                 return;
1880         }
1881         usb_set_intfdata (intf, NULL);
1882
1883         down(&usbvision->lock);
1884
1885         // At this time we ask to cancel outstanding URBs
1886         usbvision_stop_isoc(usbvision);
1887
1888         if (usbvision->power) {
1889                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1890                 usbvision_power_off(usbvision);
1891         }
1892         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1893
1894         usb_put_dev(usbvision->dev);
1895         usbvision->dev = NULL;  // USB device is no more
1896
1897         up(&usbvision->lock);
1898
1899         if (usbvision->user) {
1900                 info("%s: In use, disconnect pending", __FUNCTION__);
1901                 wake_up_interruptible(&usbvision->wait_frame);
1902                 wake_up_interruptible(&usbvision->wait_stream);
1903         }
1904         else {
1905                 usbvision_release(usbvision);
1906         }
1907
1908         PDEBUG(DBG_PROBE, "success");
1909
1910 }
1911
1912 static struct usb_driver usbvision_driver = {
1913         .name           = "usbvision",
1914         .id_table       = usbvision_table,
1915         .probe          = usbvision_probe,
1916         .disconnect     = usbvision_disconnect
1917 };
1918
1919 /*
1920  * customdevice_process()
1921  *
1922  * This procedure preprocesses CustomDevice parameter if any
1923  *
1924  */
1925 static void customdevice_process(void)
1926 {
1927         usbvision_device_data[0]=usbvision_device_data[1];
1928         usbvision_table[0]=usbvision_table[1];
1929
1930         if(CustomDevice)
1931         {
1932                 char *parse=CustomDevice;
1933
1934                 PDEBUG(DBG_PROBE, "CustomDevide=%s", CustomDevice);
1935
1936                 /*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
1937                 usbvision_device_data[0].idVendor;
1938                 usbvision_device_data[0].idProduct;
1939                 usbvision_device_data[0].Interface;
1940                 usbvision_device_data[0].Codec;
1941                 usbvision_device_data[0].VideoChannels;
1942                 usbvision_device_data[0].VideoNorm;
1943                 usbvision_device_data[0].AudioChannels;
1944                 usbvision_device_data[0].Radio;
1945                 usbvision_device_data[0].Tuner;
1946                 usbvision_device_data[0].TunerType;
1947                 usbvision_device_data[0].Vin_Reg1;
1948                 usbvision_device_data[0].Vin_Reg2;
1949                 usbvision_device_data[0].X_Offset;
1950                 usbvision_device_data[0].Y_Offset;
1951                 usbvision_device_data[0].Dvi_yuv;
1952                 usbvision_device_data[0].ModelString;
1953                 */
1954
1955                 rmspace(parse);
1956                 usbvision_device_data[0].ModelString="USBVISION Custom Device";
1957
1958                 parse+=2;
1959                 sscanf(parse,"%x",&usbvision_device_data[0].idVendor);
1960                 goto2next(parse);
1961                 PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_device_data[0].idVendor);
1962                 parse+=2;
1963                 sscanf(parse,"%x",&usbvision_device_data[0].idProduct);
1964                 goto2next(parse);
1965                 PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_device_data[0].idProduct);
1966                 sscanf(parse,"%d",&usbvision_device_data[0].Interface);
1967                 goto2next(parse);
1968                 PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
1969                 sscanf(parse,"%d",&usbvision_device_data[0].Codec);
1970                 goto2next(parse);
1971                 PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
1972                 sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
1973                 goto2next(parse);
1974                 PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
1975
1976                 switch(*parse)
1977                 {
1978                         case 'P':
1979                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL");
1980                                 usbvision_device_data[0].VideoNorm=V4L2_STD_PAL;
1981                                 break;
1982
1983                         case 'S':
1984                                 PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
1985                                 usbvision_device_data[0].VideoNorm=V4L2_STD_SECAM;
1986                                 break;
1987
1988                         case 'N':
1989                                 PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
1990                                 usbvision_device_data[0].VideoNorm=V4L2_STD_NTSC;
1991                                 break;
1992
1993                         default:
1994                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
1995                                 usbvision_device_data[0].VideoNorm=V4L2_STD_PAL;
1996                                 break;
1997                 }
1998                 goto2next(parse);
1999
2000                 sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
2001                 goto2next(parse);
2002                 PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
2003                 sscanf(parse,"%d",&usbvision_device_data[0].Radio);
2004                 goto2next(parse);
2005                 PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
2006                 sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
2007                 goto2next(parse);
2008                 PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
2009                 sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
2010                 goto2next(parse);
2011                 PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
2012                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
2013                 goto2next(parse);
2014                 PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
2015                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
2016                 goto2next(parse);
2017                 PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
2018                 sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
2019                 goto2next(parse);
2020                 PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
2021                 sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
2022                 goto2next(parse);
2023                 PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
2024                 sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
2025                 PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
2026
2027                 //add to usbvision_table also
2028                 usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
2029                 usbvision_table[0].idVendor=usbvision_device_data[0].idVendor;
2030                 usbvision_table[0].idProduct=usbvision_device_data[0].idProduct;
2031
2032         }
2033 }
2034
2035
2036
2037 /*
2038  * usbvision_init()
2039  *
2040  * This code is run to initialize the driver.
2041  *
2042  */
2043 static int __init usbvision_init(void)
2044 {
2045         int errCode;
2046
2047         PDEBUG(DBG_PROBE, "");
2048
2049         PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled [video]");
2050         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
2051         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
2052         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
2053
2054         /* disable planar mode support unless compression enabled */
2055         if (isocMode != ISOC_MODE_COMPRESS ) {
2056                 // FIXME : not the right way to set supported flag
2057                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
2058                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
2059         }
2060
2061         customdevice_process();
2062
2063         errCode = usb_register(&usbvision_driver);
2064
2065         if (errCode == 0) {
2066                 info(DRIVER_DESC " : " USBVISION_VERSION_STRING);
2067                 PDEBUG(DBG_PROBE, "success");
2068         }
2069         return errCode;
2070 }
2071
2072 static void __exit usbvision_exit(void)
2073 {
2074  PDEBUG(DBG_PROBE, "");
2075
2076  usb_deregister(&usbvision_driver);
2077  PDEBUG(DBG_PROBE, "success");
2078 }
2079
2080 module_init(usbvision_init);
2081 module_exit(usbvision_exit);
2082
2083 /*
2084  * Overrides for Emacs so that we follow Linus's tabbing style.
2085  * ---------------------------------------------------------------------------
2086  * Local variables:
2087  * c-basic-offset: 8
2088  * End:
2089  */