V4L/DVB (4937): Usbvision cleanup and code reorganization

- removal of overlay stuff
- reorganization of functions in 3 files:
    * usbvision-i2c for I2C-related stuff
    * usbvision-video for v4l2 entry points
    * usbvision-core for all peripheral controls and utilities

Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

7 files changed, 2796 insertions, 3688 deletions

diff --git a/drivers/media/video/usbvision/Makefile b/drivers/media/video/usbvision/Makefile
index ebdf78a19280..9ac92a80c645 100644
--- a/drivers/media/video/usbvision/Makefile
+++ b/drivers/media/video/usbvision/Makefile
@@ -1,4 +1,4 @@
-usbvision-objs  := usbvision-core.o usbvision-i2c.o usbvision-cards.o
+usbvision-objs  := usbvision-core.o usbvision-video.o usbvision-i2c.o usbvision-cards.o
 
 obj-$(CONFIG_VIDEO_USBVISION) += usbvision.o
 
diff --git a/drivers/media/video/usbvision/usbvision-cards.c b/drivers/media/video/usbvision/usbvision-cards.c
index 16c8890bf9bb..f1fb9e752b5d 100644
--- a/drivers/media/video/usbvision/usbvision-cards.c
+++ b/drivers/media/video/usbvision/usbvision-cards.c
@@ -30,7 +30,6 @@
 #include "usbvision.h"
 
 /* Supported Devices: A table for usbvision.c*/
-
 struct usbvision_device_data_st  usbvision_device_data[] = {
 	{0xFFF0, 0xFFF0, -1, CODEC_SAA7111, 3, V4L2_STD_NTSC,  1, 1, 1, 1, TUNER_PHILIPS_NTSC_M,       -1, -1, -1, -1, -1, "Custom Dummy USBVision Device"},  
 	{0x0A6F, 0x0400, -1, CODEC_SAA7113, 4, V4L2_STD_NTSC,  1, 0, 1, 0, 0,                          -1, -1, -1, -1, -1, "Xanboo"}, 
diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c
index 0eb3ddcd0f3e..cf787d8ab6d3 100644
--- a/drivers/media/video/usbvision/usbvision-core.c
+++ b/drivers/media/video/usbvision/usbvision-core.c
@@ -1,11 +1,12 @@
 /*
- * USB USBVISION Video device driver 0.9.8.3cvs (For Kernel 2.4.19-2.4.32 + 2.6.0-2.6.16)
- *
- *
+ * usbvision-core.c - driver for NT100x USB video capture devices
+ * 
  *
  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
+ *                         Dwaine Garden <dwainegarden@rogers.com>
  *
  * This module is part of usbvision driver project.
+ * Updates to driver completed by Dwaine P. Garden
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -20,309 +21,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Let's call the version 0.... until compression decoding is completely
- * implemented.
- *
- * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
- * It was based on USB CPiA driver written by Peter Pregler,
- * Scott J. Bertin and Johannes Erdfelt
- * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
- * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
- * Updates to driver completed by Dwaine P. Garden
- *
- * History:
- *
- * Mar. 2000 - 15.12.2000:  (0.0.0 - 0.2.0)
- *     Several alpha drivers and the first beta.
- *
- * Since Dec. 2000:  (0.2.1) or (v2.1)
- *     Code changes or updates by Dwaine Garden and every other person.
- *
- *     Added: New Hauppauge TV device  Vendor  ID: 0x0573
- *                                     Product ID: 0x4D01
- *            (Thanks to Giovanni Garberoglio)
- *
- *     Added: UK Hauppauge WinTV-USB   Vendor  ID: 0x0573
- *                                     Product ID: 0x4D02
- *            (Thanks to Derek Freeman-Jones)
- *
- * Feb, 2001 - Apr 08, 2001:  (0.3.0)
- *     - Some fixes. Driver is now more stable.
- *     - Scratch is organized as ring-buffer now for better performance
- *     - DGA (overlay) is now supported.
- *       !!!!Danger!!!! Clipping is not yet implemented. Your system will
- *       crash if your video window leaves the screen!!!
- *     - Max. Framesize is set to 320x240. There isn't more memory on the
- *       nt1003 video device for the FIFO.
- *     - Supported video palettes: RGB565, RGB555, RGB24, RGB32
- *
- *
- * Apr 15, 2001:  (0.3.1-test...)
- *     - Clipping is implemented
- *     - NTSC is now coloured (Thanks to Dwaine Garden)
- *     - Added SECAM colour detection in saa7111-new
- *     - Added: French Hauppauge WinTV USB  Vendor ID: 0x0573
- *                                          Product ID: 0x4D03
- *              (Thanks to Julius Hrivnac)
- *     - Added: US Hauppauge WINTV USB  Vendor ID: 0x0573
- *                                      Product ID: 0x4D00
- *              (Thanks to  Derrick J Brashear)
- *     - Changes for adding new devices. There's now a table in usbvision.h.
- *       Adding your devices data to the usbvision_device_data table is all
- *       you need to add a new device.
- *
- * May 11, 2001: (0.3.2-test...) (Thanks to Derek Freeman-Jones)
- *     - Support YUV422 raw format for people with hardware scaling.
- *     - Only power on the device when opened (use option PowerOnAtOpen=0 to disable it).
- *     - Turn off audio so we can listen to Line In.
- *
- * July 5, 2001 - (Patch the driver to run with Kernel 2.4.6)
- *     - Fixed a problem with the number of parameters passed to video_register_device.
- *
- * July 6, 2001 - Added: HAUPPAUGE WINTV-USB FM USA Vendor  ID: 0x0573
- *                                              	Product ID: 0x4D10
- *       (Thanks to Braddock Gaskill)
- *                Added: USBGear USBG-V1 resp. HAMA USB
- *                                      Vendor  ID: 0x0573
- *                                      Product ID: 0x0003
- *       (Thanks to Bradley A. Singletary and Juergen Weigert)
- *
- * Jan 24, 2002 - (0.3.3-test...)
- *     - Moved all global variables that are device specific the usb_usbvision struct
- *     - Fixed the 64x48 unchangable image in xawtv when starting it with overlay
- *     - Add VideoNorm and TunerType to the usb_device_data table
- *     - Checked the audio channels and mute for HAUPPAUGE WinTV USB FM
- *     - Implemented the power on when opening the device. But some software opens
- *       the device several times when starting. So the i2c parts are just registered
- *       by an open, when they become deregistered by the next close. You can speed
- *       up tuner detection, when adding "options tuner addr=your_addr" to /etc/modules.conf
- *     - Begin to resize the frame in width and height. So it will be possible to watch i.e.
- *       384x288 pixels at 23 fps.
- *
- * Feb 10, 2002
- *     - Added radio device
- *
- *
- * Jul 30, 2002 - (Thanks Cameron Maxwell)
- *     - Changes to usbvision.h --fixed usbvision device data structure, incorrectly had (0x0573, 0x4d21) for WinTV-USB II, should be 0x4d20.
- *     - Changes for device WinTV-USB II (0x0573. 0x4D21).  It does not have a FM tuner.
- *     - Added the real device HAUPPAUGE WINTV-USB II (PAL) to the device structure in usbvision.h.
- *     - Changes to saa7113-new, the video is 8 bit data for the Phillips SAA7113 not 16bit like SAA7111.
- *     - Tuned lots of setup registers for the Phillips SAA7113 video chipset.
- *     - Changes to the supplied makefile. (Dwaine Garden) Still needs to be fixed so it will compile modules on different distrubutions.
- *
- *
- * Aug 10, 2002 - (Thanks Mike Klinke)
- *     - Changes to usbvision.txt -- Fixed instructions on the location to copy the contents of the tgz file.
- *     - Added device WinTV-USB FM Model 621 (0x0573. 0x4D30). There is another device which carries the same name. Kept that device in the device structure.
- *
- * Aug 12, 2002 - Dwaine Garden
- *     - Added the ability to read the NT100x chip for the MaxISOPacketLength and USB Bandwidth
- *       Setting of the video device.
- *     - Adjustments to the SAA7113H code for proper video output.
- *     - Changes to usbvision.h, so all the devices with FM tuners are working.
- *
- * Feb 10, 2003 - Joerg Heckenbach
- *     - fixed endian bug for Motorola PPC
- *
- * Feb 13, 2003 - Joerg Heckenbach
- *     - fixed Vin_Reg setting and presetting from usbvision_device_data()
- *
- * Apr 19, 2003 - Dwaine Garden
- *     - Fixed compiling errors under RedHat v9.0. from uvirt_to_kva and usbvision_mmap. (Thanks Cameron Maxwell)
- *     - Changed pte_offset to pte_offset_kernel.
- *     - Changed remap_page_range and added additional parameter to function.
- *     - Change setup parameters for the D-Link V100 USB device
- *     - Added a new device to the usbvision driver.  Pinnacle Studio PCTV USB (PAL) 0x2304 0x0110
- *     - Screwed up the sourceforge.net cvs respository!  8*)
- *
- * Apr 22, 2002 - Dwaine Garden
- *     - Added a new device to the usbvision driver. Dazzle DVC-80 (PAL) 0x07d0 0x0004. (Thanks Carl Anderson)
- *     - Changes to some of the comments.
- *
- * June 06, 2002 - Ivan, Dwaine Garden
- *     - Ivan updates for fine tuning device parameters without driver recompiling. (Ivan)
- *     - Changes to some of the comments. (Dwaine Garden)
- *     - Changes to the makefile - Better CPU settings. (Ivan)
- *     - Changes to device Hauppauge WinTv-USB III (PAL) FM Model 568 - Fine tuning parameters (Ivan)
- *
- *
- * Oct 16, 2003 - 0.9.0 - Joerg Heckenbach
- *     - Implementation of the first part of the decompression algorithm for intra frames.
- *       The resolution has to be 320x240. A dynamic adaption of compression deepth is
- *       missing yet.
- *
- * Oct 22, 2003 - 0.9.1 - Joerg Heckenbach
- *     - Implementation of the decompression algorithm for inter frames.
- *       The resolution still has to be 320x240.
- *
- * Nov 2003 - Feb 2004 - 0.9.2 to 0.9.3 - Joerg Heckenbach
- *     - Implement last unknown compressed block type. But color is still noisy.
- *     - Finding criteria for adaptive compression adjustment.
- *     - Porting to 2.6 kernels, but still working under 2.4
- *
- * Feb 04, 2004 - 0.9.4 Joerg Heckenbach
- *     - Found bug in color decompression. Color is OK now.
- *
- * Feb 09, 2004 - 0.9.5 Joerg Heckenbach
- *     - Add auto-recognition of chip type NT1003 or NT1004.
- *     - Add adaptive compression adjustment.
- *     - Patched saa7113 multiplexer switching (Thanks to Orlando F.S. Bordoni)
- *
- * Feb 24, 2004 - 0.9.6 Joerg Heckenbach
- *     - Add a timer to wait before poweroff at close, to save start time in
- *       some video applications
- *
- * Mar 4, 2004 - 0.9.6 Dwaine Garden
- *     - Added device Global Village GV-007 (NTSC) to usbvision.h (Thanks to Abe Skolnik)
- *     - Forgot to add this device to the driver. 8*)
- *
- * June 2, 2004 - 0.9.6 Dwaine Garden
- *     - Fixed sourceforge.net cvs repository.
- *     - Added #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,26) for .owner to help compiling under kernels 2.4.x which do not have the i2c v2.8.x updates.
- *     - Added device Hauppauge WinTv-USB III (PAL) FM Model 597 to usbvision.h
- *
- * July 1, 2004 -0.9.6 Dwaine Garden
- *     - Patch was submitted by Hal Finkel to fix the problem with the tuner not working under kernel 2.6.7.
- *     - Thanks Hal.....
- *
- * July 30, 2004 - 0.9.6 Dwaine Garden
- *     - Patch was submitted by Tobias Diaz to fix Model ID mismatch in usbvision.h.
- *     - Thanks.....
- *
- * August 12, 2004 - 0.9.6 Dwaine Garden
- *     - Updated the readme file so people could install the driver under the configuration file for kernel 2.6.x recompiles.  Now people can use make xconfig!
- *     - Added new device "Camtel Technology Corp TVB330-USB FM".
- *     - Sourceforge.net CVS has been updated with all the changes.
- *
- * August 20, 2004 - 0.9.7 Dwaine Garden
- *     - Added Device "Hauppauge USB Live Model 600"
- *     - Fixed up all the devices which did not have a default tuner type in usbvision.h.  It's best guess, at least until someone with the device tells me otherwise.
- *     - Sourceforge.net CVS has been updated with all the changes.
- *     - Clean up the driver.
- *
- * September 13, 2004 - 0.9.8 Dwaine Garden
- *     - Changed usbvision_muxsel to address the problem with black & white s-video output for NT1004 devices with saa7114 video decoder.  Thanks to Emmanuel for the patch and testing.
- *     - Fixed up SECAM devices which could not properly output video.  Changes to usbmuxsel.  Thanks to Emmanuel for the patch and everyone with a SECAM device which help test.
- *     - Removed some commented out code.  Clean up.
- *     - Tried to fix up the annoying empty directories in the sourceforge.net cvs.   Fuck it up again.  8*(
- *
- * November 15, 2004 - 0.9.8 Dwaine Garden
- *     - Release new tar - 0.9.8 on sourceforge.net
- *     - Added some new devices to usbvision.h WinTV USB Model 602 40201 Rev B282, Hauppague WinTV USB Model 602 40201 Rev B285
- *     - Added better compatibility for 2.6.x kernels.
- *     - Hardware full screen scaling in grabdisplay mode.
- *     - Better support for sysfs.  More code to follow for both video device and radio device.	Device information is located at /sys/class/video4linux/video0
- *     - Added module_param so loaded module parameters are displayed in sysfs.  Driver parameters should show up in /sys/module/usbvision
- *     - Adjusted the SAA7111 registers to match the 2.6.x kernel SAA7111 code. Thanks to the person which helped test.
- *     - Changed to wait_event_interruptible. For all the people running Fedora 2.
- *     - Added some screenshots of actual video captures on sourceforge.net.
- *
- * November 24, 2004 - 0.9.8.1cvs Dwaine Garden
- *     - Added patch to check for palette and format in VIDIOCSPICT.  Helix Producer should work fine with the driver now.  Thanks Jason Simpson
- *     - Two device description changes and two additions for the maintainer of usb.ids.
- *
- * December 2, 2004 - 0.9.8.1cvs Dwaine Garden
- *     - Added patch for YUV420P and YUV422P video output.  Thanks to Alex Smith.
- *     - Better support for mythtv.
- *
- * January 2, 2005 - 0.9.8.1cvs Dwaine Garden
- *     - Setup that you can specify which device is used for video.  Default is auto detect next available device number eg.  /dev/videoX
- *     - Setup that you can specify which device is used for radio.  Default is auto detect next available device number eg.  /dev/radioX
- *     - usb_unlink_urb() is deprecated for synchronous unlinks.  Using usb_kill_urb instead.
- *     - usbvision_kvirt_to_pa is deprecated.  Removed.
- *     - Changes are related to kernel changes for 2.6.10. (Fedora 4)
- *
- * February 2, 2005 - 0.9.8.1cvs Dwaine Garden
- *     - Added a new device to usbvision.h Dazzle DVC 50.  Thanks to Luiz S.
- *
- * March 29, 2005 - 0.9.8.1cvs Dwaine Garden
- *     - Fixed compile error with saa7113 under kernels 2.6.11+
- *     - Added module parameter to help people with Black and White output with using s-video input.  Some cables and input device are wired differently.
- *     - Removed the .id from the i2c usbvision template.  There was a change to the i2c with kernels 2.6.11+.
- *
- * April 9, 2005 - 0.9.8.1cvs Dwaine Garden
- *     - Added in the 2.4 and 2.6 readme files the SwitchSVideoInput parameter information.  This will help people setup the right values for the parameter.
- *       If your device experiences Black and White images with the S-Video Input.  Set this parameter to 1 when loading the module.
- *     - Replaced the wrong 2.6 readme file.  I lost the right version.  Someone sent me the right version by e-mail.  Thanks.
- *     - Released new module version on sourceforge.net.  So everyone can enjoy all the fixes and additional device support.
- *
- * April 20, 2005 - 0.9.8.2cvs Dwaine Garden
- *     - Release lock in usbvision_v4l_read_done.  -Thanks to nplanel for the patch.
- *     - Additional comments to the driver.
- *     - Fixed some spelling mistakes.  8*)
- *
- * April 23, 2005 - 0.9.8.2cvs Joerg Heckenbach
- *     - Found bug in usbvision line counting. Now there should be no spurious lines in the image any longer.
- *     - Swapped usbvision_register_video and usbvision_configure_video to fix problem with PowerOnAtOpen=0.
- *       Thanks to Erwan Velu
- *
- * April 26, 2005 - 0.9.8.2cvs Joerg Heckenbach
- *     - Fixed problem with rmmod module and oppses. Replaced vfree(usbvision->overlay_base) with iounmap(usbvision->overlay_base).
- *     - Added function usb_get_dev(dev) and ; To help with unloading the module multiple times without crashing.
- *       (Keep the reference count in kobjects correct)
- *
- * June 14, 2005 - 0.9.8.2cvs Dwaine
- *     - Missed a change in saa7113.c for checking kernel version.  Added conditional if's.
- *
- * June 15, 2005 - 0.9.8.2cvs Dwaine
- *     - Added new device WinTV device VendorId 0573 and ProductId 4d29.
- *     - Hacked some support for newer NT1005 devices.  This devices only seem to have one configuration, not multiple configurations like the NT1004.
- *
- * June 29, 2005 - 0.9.8.2cvs Dwaine
- *     - Added new device WinTV device VendorId 0573 and ProductId 4d37.
- *     - Because of the first empty entry in usbvision_table, modutils failed to create the necessary entries for modules.usbmap.
- *       This means hotplug won't work for usbvision.  Thanks to Gary Ng.
- *     - Sent an e-mail to the maintainer of usb.ids.  New devices identified need to be added.
- *     - Fixed compile error with saa7113 under kernel 2.6.12.
- *
- * July 6, 2005 - 0.9.8.2cvs Dwaine
- *     - Patch submitted by Gary Ng for two additional procfs entries.  Device Input and Frequency setting.
- *
- * July 12, 2005 - 0.9.8.2cvs Dwaine
- *     - New tuner identified for some devices it's called TCL_MFPE05.  This tuner uses the same API as tuner 38 in tuner.c.
- *     - Thanks to lynx31 for contacting Hauppage and asking them.
- *     - I have no clue as to which devices use this new tuner, so people will have to contact me and tell me.
- *
- * July 21, 2005 - 0.9.8.2cvs Dwaine
- *     - Patched usbvision.c with missing ifdef kernversion statement so the module will compile with older kernels and v4l.
- *     - Thanks to cipe007......
- *
- * May 19, 2006 - 0.9.8.3cvs Dwaine
- *     - Patched usbvision.c and i2c-algo.c so they will compile with kernel 2.6.16
- *     - Adjust device "Pinnacle Studio PCTV USB (PAL) FM" values in usbvision.h
- *
- * May 24, 2006 - 0.9.8.3cvs Dwaine
- *     -Pinnacle Studio PCTV USB (NTSC) FM uses saa7111, not saa7113 like first thought.
- *     -Updated usbvision.h
- *
- * Aug 15, 2006 - 0.9.8.3cvs Dwaine
- *     -Added saa711x module into cvs, since the newer saa7115 module in newer kernels is v4l2.  The usbvision driver is only v4l.
- *     -Updated makefile to put compiled modules into correct location.
- *
- * Aug 21, 2006 - 0.9.8.3cvs Dwaine
- *     -Changed number of bytes for i2c write to 4 as per the NT100X spec sheet.  Thanks to Merlum for finding it.
- *     -Remove the radio option for device Hauppauge WinTV USB device Model 40219 Rev E189.  This device does not have a FM radio.  Thanks to Shadwell.
- *     -Added radio option for device Hauppauge WinTV USB device Model 40219 Rev E189 again.  Just got an e-mail indicating their device has one.  8*)
- *
- * Aug 27, 2006 - 0.9.8.3cvs Dwaine
- *     -Changed ifdef statement so the usbvision driver will compile with kernels at 2.6.12.
- *     -Updated readme files for new updated tuner list for v4l devices.
- *
- *
- *
- * TODO:
- *     - use submit_urb for all setup packets
- *     - Fix memory settings for nt1004. It is 4 times as big as the
- *       nt1003 memory.
- *     - Add audio on endpoint 3 for nt1004 chip.  Seems impossible, needs a codec interface.  Which one?
- *     - Clean up the driver.
- *     - optimization for performance.
- *     - Add Videotext capability (VBI).  Working on it.....
- *     - Check audio for other devices
- *     - Add v4l2 interface
- *
  */
 
 #include <linux/kernel.h>
@@ -344,13 +42,6 @@
 #include <linux/video_decoder.h>
 #include <linux/i2c.h>
 
-#define USBVISION_DRIVER_VERSION_MAJOR 0
-#define USBVISION_DRIVER_VERSION_MINOR 8
-#define USBVISION_DRIVER_VERSION_PATCHLEVEL 0
-
-#define USBVISION_VERSION __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL) " " USBVISION_DRIVER_VERSION_COMMENT
-#define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
-
 #include <media/saa7115.h>
 #include <media/v4l2-common.h>
 #include <media/tuner.h>
@@ -365,99 +56,44 @@
 
 #include "usbvision.h"
 
-#define DRIVER_VERSION "0.9.8.3cvs for Linux kernels 2.4.19-2.4.32 + 2.6.0-2.6.17, compiled at "__DATE__", "__TIME__
-#define EMAIL "joerg@heckenbach-aw.de"
-#define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, Dwaine Garden <DwaineGarden@rogers.com>"
-#define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
-#define DRIVER_LICENSE "GPL"
-#define DRIVER_ALIAS "USBVision"
+static unsigned int core_debug = 0;
+module_param(core_debug,int,0644);
+MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
 
-#define	ENABLE_HEXDUMP	0	/* Enable if you need it */
+static unsigned int force_testpattern = 0;
+module_param(force_testpattern,int,0644);
+MODULE_PARM_DESC(force_testpattern,"enable test pattern display [core]");
 
+static int adjustCompression = 1;			// Set the compression to be adaptive
+module_param(adjustCompression, int, 0444);
+MODULE_PARM_DESC(adjustCompression, " Set the ADPCM compression for the device.  Default: 1 (On)");
+
+static int SwitchSVideoInput = 0;			// To help people with Black and White output with using s-video input.  Some cables and input device are wired differently.
+module_param(SwitchSVideoInput, int, 0444);
+MODULE_PARM_DESC(SwitchSVideoInput, " Set the S-Video input.  Some cables and input device are wired differently. Default: 0 (Off)");
+
+#define	ENABLE_HEXDUMP	0	/* Enable if you need it */
 
-#define USBVISION_DEBUG		/* Turn on debug messages */
 
 #ifdef USBVISION_DEBUG
 	#define PDEBUG(level, fmt, args...) \
-		if (debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
+		if (core_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
 #else
 	#define PDEBUG(level, fmt, args...) do {} while(0)
 #endif
 
-#define DBG_IOCTL	1<<3
-#define DBG_IO		1<<4
-#define DBG_RIO		1<<5
-#define DBG_HEADER	1<<7
-#define DBG_PROBE	1<<8
-#define DBG_IRQ		1<<9
-#define DBG_ISOC	1<<10
-#define DBG_PARSE	1<<11
-#define DBG_SCRATCH	1<<12
-#define DBG_FUNC	1<<13
-#define DBG_I2C		1<<14
-
-#define DEBUG(x...) 								/* General Debug */
-#define IODEBUG(x...)								/* Debug IO */
-#define OVDEBUG(x...) 								/* Debug overlay */
-#define MDEBUG(x...)								/* Debug memory management */
-
-//String operations
-#define rmspace(str)	while(*str==' ') str++;
-#define goto2next(str)	while(*str!=' ') str++; while(*str==' ') str++;
-
-
-static int usbvision_nr = 0;			// sequential number of usbvision device
-static unsigned long usbvision_timestamp = 0;		// timestamp in jiffies of a hundred frame
-static unsigned long usbvision_counter = 0;		// frame counter
+#define DBG_HEADER	1<<0
+#define DBG_IRQ		1<<1
+#define DBG_ISOC	1<<2
+#define DBG_PARSE	1<<3
+#define DBG_SCRATCH	1<<4
 
 static const int max_imgwidth = MAX_FRAME_WIDTH;
 static const int max_imgheight = MAX_FRAME_HEIGHT;
 static const int min_imgwidth = MIN_FRAME_WIDTH;
 static const int min_imgheight = MIN_FRAME_HEIGHT;
 
-#define FRAMERATE_MIN	0
-#define FRAMERATE_MAX	31
-
-
-enum {
-	ISOC_MODE_YUV422 = 0x03,
-	ISOC_MODE_YUV420 = 0x14,
-	ISOC_MODE_COMPRESS = 0x60,
-};
-
-static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
-	{ 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
-	{ 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
-	{ 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
-	{ 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
-	{ 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
-	{ 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
-	{ 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
-	{ 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
-};
-
-/* supported tv norms */
-static struct usbvision_tvnorm tvnorms[] = {
-	{
-		.name = "PAL",
-		.id = V4L2_STD_PAL,
-	}, {
-		.name = "NTSC",
-		.id = V4L2_STD_NTSC,
-	}, {
-		 .name = "SECAM",
-		 .id = V4L2_STD_SECAM,
-	}, {
-		.name = "PAL-M",
-		.id = V4L2_STD_PAL_M,
-	}
-};
-
-#define TVNORMS ARRAY_SIZE(tvnorms)
-
-
-/*
- * The value of 'scratch_buf_size' affects quality of the picture
+/* The value of 'scratch_buf_size' affects quality of the picture
  * in many ways. Shorter buffers may cause loss of data when client
  * is too slow. Larger buffers are memory-consuming and take longer
  * to work with. This setting can be adjusted, but the default value
@@ -467,229 +103,10 @@ static struct usbvision_tvnorm tvnorms[] = {
 static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE;
 
 // Function prototypes
-static int usbvision_restart_isoc(struct usb_usbvision *usbvision);
-static int usbvision_begin_streaming(struct usb_usbvision *usbvision);
-static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
-static int usbvision_i2c_write(void *data, unsigned char addr, char *buf, short len);
-static int usbvision_i2c_read(void *data, unsigned char addr, char *buf, short len);
-static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
-static int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, unsigned char value);
 static int usbvision_request_intra (struct usb_usbvision *usbvision);
 static int usbvision_unrequest_intra (struct usb_usbvision *usbvision);
 static int usbvision_adjust_compression (struct usb_usbvision *usbvision);
 static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision);
-static void usbvision_release(struct usb_usbvision *usbvision);
-static int usbvision_set_input(struct usb_usbvision *usbvision);
-static int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
-static void usbvision_empty_framequeues(struct usb_usbvision *dev);
-static int usbvision_stream_interrupt(struct usb_usbvision *dev);
-static void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd, void *arg);
-
-
-// Bit flags (options)
-#define FLAGS_RETRY_VIDIOCSYNC		(1 << 0)
-#define	FLAGS_MONOCHROME		(1 << 1)
-#define FLAGS_DISPLAY_HINTS		(1 << 2)
-#define FLAGS_OSD_STATS			(1 << 3)
-#define FLAGS_FORCE_TESTPATTERN		(1 << 4)
-#define FLAGS_SEPARATE_FRAMES		(1 << 5)
-#define FLAGS_CLEAN_FRAMES		(1 << 6)
-
-// Default initalization of device driver parameters
-static int flags = 0;					// Set the default Overlay Display mode of the device driver
-static int debug = 0;					// Set the default Debug Mode of the device driver
-static int isocMode = ISOC_MODE_COMPRESS;		// Set the default format for ISOC endpoint
-static int adjustCompression = 1;			// Set the compression to be adaptive
-static int dga = 1;					// Set the default Direct Graphic Access
-static int PowerOnAtOpen = 1;				// Set the default device to power on at startup
-static int SwitchSVideoInput = 0;			// To help people with Black and White output with using s-video input.  Some cables and input device are wired differently.
-static int video_nr = -1;				// Sequential Number of Video Device
-static int radio_nr = -1;				// Sequential Number of Radio Device
-static int vbi_nr = -1;					// Sequential Number of VBI Device
-static char *CustomDevice=NULL;				// Set as nothing....
-
-// Grab parameters for the device driver
-
-#if defined(module_param)                               // Showing parameters under SYSFS
-module_param(flags, int, 0444);
-module_param(debug, int, 0444);
-module_param(isocMode, int, 0444);
-module_param(adjustCompression, int, 0444);
-module_param(dga, int, 0444);
-module_param(PowerOnAtOpen, int, 0444);
-module_param(SwitchSVideoInput, int, 0444);
-module_param(video_nr, int, 0444);
-module_param(radio_nr, int, 0444);
-module_param(vbi_nr, int, 0444);
-module_param(CustomDevice, charp, 0444);
-#else							// Old Style
-MODULE_PARM(flags, "i");				// Grab the Overlay Display mode of the device driver
-MODULE_PARM(debug, "i");				// Grab the Debug Mode of the device driver
-MODULE_PARM(isocMode, "i");				// Grab the video format of the video device
-MODULE_PARM(adjustCompression, "i");			// Grab the compression to be adaptive
-MODULE_PARM(dga, "i");					// Grab the Direct Graphic Access
-MODULE_PARM(PowerOnAtOpen, "i");			// Grab the device to power on at startup
-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.
-MODULE_PARM(video_nr, "i");				// video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
-MODULE_PARM(radio_nr, "i");				// radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
-MODULE_PARM(vbi_nr, "i");				// vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
-MODULE_PARM(CustomDevice, "s");				// .... CustomDevice
-#endif
-
-MODULE_PARM_DESC(flags,	" Set the default Overlay Display mode of the device driver.  Default: 0 (Off)");
-MODULE_PARM_DESC(debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
-MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
-MODULE_PARM_DESC(adjustCompression, " Set the ADPCM compression for the device.  Default: 1 (On)");
-MODULE_PARM_DESC(dga, " Set the Direct Graphic Access for the device.  Default: 1 (On)");
-MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
-MODULE_PARM_DESC(SwitchSVideoInput, " Set the S-Video input.  Some cables and input device are wired differently. Default: 0 (Off)");
-MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
-MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
-MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
-MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device.  Default: null");
-
-
-// Misc stuff
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE(DRIVER_LICENSE);
-	MODULE_VERSION(DRIVER_VERSION);
-	MODULE_ALIAS(DRIVER_ALIAS);
-
-#ifdef MODULE
-static unsigned int autoload = 1;
-#else
-static unsigned int autoload = 0;
-#endif
-
-
-/****************************************************************************************/
-/* SYSFS Code - Copied from the stv680.c usb module.					*/
-/* Device information is located at /sys/class/video4linux/video0			*/
-/* Device parameters information is located at /sys/module/usbvision                    */
-/* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
-/****************************************************************************************/
-
-
-#define YES_NO(x) ((x) ? "Yes" : "No")
-
-static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
-{
-	struct video_device *vdev = to_video_device(cd);
-	return video_get_drvdata(vdev);
-}
-
-static ssize_t show_version(struct class_device *cd, char *buf)
-{
-	return sprintf(buf, "%s\n", DRIVER_VERSION);
-}
-static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
-
-static ssize_t show_model(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
-}
-static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
-
-static ssize_t show_hue(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%d\n", usbvision->hue >> 8);
-}
-static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
-
-static ssize_t show_contrast(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%d\n", usbvision->contrast >> 8);
-}
-static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
-
-static ssize_t show_brightness(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%d\n", usbvision->brightness >> 8);
-}
-static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
-
-static ssize_t show_saturation(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%d\n", usbvision->saturation >> 8);
-}
-static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
-
-static ssize_t show_streaming(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
-}
-static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
-
-static ssize_t show_overlay(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%s\n", YES_NO(usbvision->overlay));
-}
-static CLASS_DEVICE_ATTR(overlay, S_IRUGO, show_overlay, NULL);
-
-static ssize_t show_compression(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
-}
-static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
-
-static ssize_t show_device_bridge(struct class_device *class_dev, char *buf)
-{
-	struct video_device *vdev = to_video_device(class_dev);
-	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
-	return sprintf(buf, "%d\n", usbvision->bridgeType);
-}
-static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
-
-static void usbvision_create_sysfs(struct video_device *vdev)
-{
-	int res;
-	if (vdev) {
-		res=video_device_create_file(vdev, &class_device_attr_version);
-		res=video_device_create_file(vdev, &class_device_attr_model);
-		res=video_device_create_file(vdev, &class_device_attr_hue);
-		res=video_device_create_file(vdev, &class_device_attr_contrast);
-		res=video_device_create_file(vdev, &class_device_attr_brightness);
-		res=video_device_create_file(vdev, &class_device_attr_saturation);
-		res=video_device_create_file(vdev, &class_device_attr_streaming);
-		res=video_device_create_file(vdev, &class_device_attr_overlay);
-		res=video_device_create_file(vdev, &class_device_attr_compression);
-		res=video_device_create_file(vdev, &class_device_attr_bridge);
-	}
-}
-
-static void usbvision_remove_sysfs(struct video_device *vdev)
-{
-	if (vdev) {
-		video_device_remove_file(vdev, &class_device_attr_version);
-		video_device_remove_file(vdev, &class_device_attr_model);
-		video_device_remove_file(vdev, &class_device_attr_hue);
-		video_device_remove_file(vdev, &class_device_attr_contrast);
-		video_device_remove_file(vdev, &class_device_attr_brightness);
-		video_device_remove_file(vdev, &class_device_attr_saturation);
-		video_device_remove_file(vdev, &class_device_attr_streaming);
-		video_device_remove_file(vdev, &class_device_attr_overlay);
-		video_device_remove_file(vdev, &class_device_attr_compression);
-		video_device_remove_file(vdev, &class_device_attr_bridge);
-	}
-}
-
 
 /*******************************/
 /* Memory management functions */
@@ -700,7 +117,6 @@ static void usbvision_remove_sysfs(struct video_device *vdev)
  * This is used when initializing the contents of the area.
  */
 
-
 void *usbvision_rvmalloc(unsigned long size)
 {
 	void *mem;
@@ -712,65 +128,58 @@ void *usbvision_rvmalloc(unsigned long size)
 		return NULL;
 
 	memset(mem, 0, size); /* Clear the ram out, no junk to the user */
- adr = (unsigned long) mem;
- while (size > 0) {
-  #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-   mem_map_reserve(vmalloc_to_page((void *)adr));
-  #else
-   SetPageReserved(vmalloc_to_page((void *)adr));
-  #endif
-  adr += PAGE_SIZE;
-  size -= PAGE_SIZE;
- }
-
- return mem;
+	adr = (unsigned long) mem;
+	while (size > 0) {
+		SetPageReserved(vmalloc_to_page((void *)adr));
+		adr += PAGE_SIZE;
+		size -= PAGE_SIZE;
+	}
+
+	return mem;
 }
 
 void usbvision_rvfree(void *mem, unsigned long size)
 {
- unsigned long adr;
-
- if (!mem)
-  return;
-
- adr = (unsigned long) mem;
- while ((long) size > 0) {
-  #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-   mem_map_unreserve(vmalloc_to_page((void *)adr));
-  #else
-   ClearPageReserved(vmalloc_to_page((void *)adr));
-  #endif
-  adr += PAGE_SIZE;
-  size -= PAGE_SIZE;
- }
- vfree(mem);
-}
+	unsigned long adr;
 
+	if (!mem)
+		return;
 
+	size = PAGE_ALIGN(size);
 
+	adr = (unsigned long) mem;
+	while ((long) size > 0) {
+		ClearPageReserved(vmalloc_to_page((void *)adr));
+		adr += PAGE_SIZE;
+		size -= PAGE_SIZE;
+	}
+
+	vfree(mem);
+}
 
 
 
 #if ENABLE_HEXDUMP
 static void usbvision_hexdump(const unsigned char *data, int len)
 {
- char tmp[80];
- int i, k;
-
- for (i = k = 0; len > 0; i++, len--) {
-  if (i > 0 && (i % 16 == 0)) {
-   printk("%s\n", tmp);
-   k = 0;
-  }
-  k += sprintf(&tmp[k], "%02x ", data[i]);
- }
- if (k > 0)
-  printk("%s\n", tmp);
+	char tmp[80];
+	int i, k;
+
+	for (i = k = 0; len > 0; i++, len--) {
+		if (i > 0 && (i % 16 == 0)) {
+			printk("%s\n", tmp);
+			k = 0;
+		}
+		k += sprintf(&tmp[k], "%02x ", data[i]);
+	}
+	if (k > 0)
+		printk("%s\n", tmp);
 }
 #endif
 
-
-/* These procedures handle the scratch ring buffer */
+/********************************
+ * scratch ring buffer handling
+ ********************************/
 int scratch_len(struct usb_usbvision *usbvision)    /*This returns the amount of data actually in the buffer */
 {
 	int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr;
@@ -800,13 +209,6 @@ int scratch_free(struct usb_usbvision *usbvision)
 }
 
 
-void *debug_memcpy(void *dest, void *src, size_t len)
-{
-	printk(KERN_DEBUG "memcpy(%p, %p, %d);\n", dest, src, len);
-	return memcpy(dest, src, len);
-}
-
-
 /* This puts data into the buffer */
 int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, int len)
 {
@@ -964,247 +366,27 @@ void scratch_reset(struct usb_usbvision *usbvision)
 	usbvision->isocstate = IsocState_NoFrame;
 }
 
-
-
-/* Here comes the OVERLAY stuff */
-
-/* Tell the interrupt handler what to to.  */
-static
-void usbvision_cap(struct usb_usbvision* usbvision, int on)
+int usbvision_scratch_alloc(struct usb_usbvision *usbvision)
 {
-	DEBUG(printk(KERN_DEBUG "usbvision_cap: overlay was %d, set it to %d\n", usbvision->overlay, on);)
-
-	if (on) {
-		usbvision->overlay = 1;
-	}
-	else {
-		usbvision->overlay = 0;
-	}
-}
-
-
-
-
-/* append a new clipregion to the vector of video_clips */
-static
-void usbvision_new_clip(struct v4l2_format* vf, struct v4l2_clip* vcp, int x, int y, int w, int h)
-{
-	vcp[vf->fmt.win.clipcount].c.left = x;
-	vcp[vf->fmt.win.clipcount].c.top = y;
-	vcp[vf->fmt.win.clipcount].c.width = w;
-	vcp[vf->fmt.win.clipcount].c.height = h;
-	vf->fmt.win.clipcount++;
-}
-
-
-#define mark_pixel(x,y)  usbvision->clipmask[((x) + (y) * MAX_FRAME_WIDTH)/32] |= 0x00000001<<((x)%32)
-#define clipped_pixel(index) usbvision->clipmask[(index)/32] & (0x00000001<<((index)%32))
-
-static
-void usbvision_built_overlay(struct usb_usbvision* usbvision, int count, struct v4l2_clip *vcp)
-{
-	usbvision->overlay_win = usbvision->overlay_base +
-		(signed int)usbvision->vid_win.fmt.win.w.left * usbvision->depth / 8 +
-		(signed int)usbvision->vid_win.fmt.win.w.top * usbvision->vid_buf.fmt.bytesperline;
-
-		IODEBUG(printk(KERN_DEBUG "built_overlay base=%p, win=%p, bpl=%d, clips=%d, size=%dx%d\n",
-					usbvision->overlay_base, usbvision->overlay_win,
-					usbvision->vid_buf.fmt.bytesperline, count,
-					usbvision->vid_win.fmt.win.w.width, usbvision->vid_win.fmt.win.w.height);)
-
-
-	/* Add here generation of clipping mask */
-{
-	int x_start, x_end, y_start, y_end;
-	int clip_index, x, y;
-
-	memset(usbvision->clipmask, 0, USBVISION_CLIPMASK_SIZE);
-
-	OVDEBUG(printk(KERN_DEBUG "clips = %d\n", count);)
-
-	for(clip_index = 0; clip_index < count; clip_index++) {
-		OVDEBUG(printk(KERN_DEBUG "clip: %d,%d,%d,%d\n", vcp[clip_index].x,
-				vcp[clip_index].y,
-				vcp[clip_index].width,
-				vcp[clip_index].height);)
-
-		x_start = vcp[clip_index].c.left;
-		if(x_start >= (int)usbvision->vid_win.fmt.win.w.width) {
-			OVDEBUG(printk(KERN_DEBUG "x_start=%d\n", x_start);)
-			continue; //clipping window is right of overlay window
-		}
-		x_end	= x_start + vcp[clip_index].c.width;
-		if(x_end <= 0) {
-			OVDEBUG(printk(KERN_DEBUG "x_end=%d\n", x_end);)
-			continue; //clipping window is left of overlay window
-		}
-
-		y_start = vcp[clip_index].c.top;
-		if(y_start >= (int)usbvision->vid_win.fmt.win.w.height) {
-			OVDEBUG(printk(KERN_DEBUG "y_start=%d\n", y_start);)
-			continue; //clipping window is below overlay window
-		}
-		y_end   = y_start + vcp[clip_index].c.height;
-		if(y_end <= 0) {
-			OVDEBUG(printk(KERN_DEBUG "y_end=%d\n", y_end);)
-			continue; //clipping window is above overlay window
-		}
-
-		//clip the clipping window
-		if (x_start < 0) {
-			x_start = 0;
-		}
-		if (x_end > (int)usbvision->vid_win.fmt.win.w.width) {
-			x_end = (int)usbvision->vid_win.fmt.win.w.width;
-		}
-		if (y_start < 0) {
-			y_start = 0;
-		}
-		if (y_end > (int)usbvision->vid_win.fmt.win.w.height) {
-			y_end = (int)usbvision->vid_win.fmt.win.w.height;
-		}
-
-		OVDEBUG(printk(KERN_DEBUG "clip_o: %d,%d,%d,%d\n", x_start,	y_start, x_end, y_end);)
-
-
-
-		for(y = y_start; y < y_end; y++) {
-			for(x = x_start; x < x_end; x++) {
-				mark_pixel(x,y);
-			}
-		}
-	}
-}
-
-}
-
-
-
-void usbvision_osd_char(struct usb_usbvision *usbvision,
-			struct usbvision_frame *frame, int x, int y, int ch)
-{
-	static const unsigned short digits[16] = {
-		0xF6DE,		/* 0 */
-		0x2492,		/* 1 */
-		0xE7CE,		/* 2 */
-		0xE79E,		/* 3 */
-		0xB792,		/* 4 */
-		0xF39E,		/* 5 */
-		0xF3DE,		/* 6 */
-		0xF492,		/* 7 */
-		0xF7DE,		/* 8 */
-		0xF79E,		/* 9 */
-		0x77DA,		/* a */
-		0xD75C,		/* b */
-		0xF24E,		/* c */
-		0xD6DC,		/* d */
-		0xF34E,		/* e */
-		0xF348		/* f */
-	};
-	unsigned short digit;
-	int ix, iy;
-
-	if ((usbvision == NULL) || (frame == NULL))
-		return;
-
-	if (ch >= '0' && ch <= '9')
-		ch -= '0';
-	else if (ch >= 'A' && ch <= 'F')
-		ch = 10 + (ch - 'A');
-	else if (ch >= 'a' && ch <= 'f')
-		ch = 10 + (ch - 'a');
-	else
-		return;
-	digit = digits[ch];
-
-	for (iy = 0; iy < 5; iy++) {
-		for (ix = 0; ix < 3; ix++) {
-			if (digit & 0x8000) {
-			//	USBVISION_PUTPIXEL(frame, x + ix, y + iy,
-			//			0xFF, 0xFF, 0xFF);
-			}
-			digit = digit << 1;
-		}
+	usbvision->scratch = vmalloc(scratch_buf_size);
+	scratch_reset(usbvision);
+	if(usbvision->scratch == NULL) {
+		err("%s: unable to allocate %d bytes for scratch",
+		    __FUNCTION__, scratch_buf_size);
+		return -ENOMEM;
 	}
+	return 0;
 }
 
-
-void usbvision_osd_string(struct usb_usbvision *usbvision,
-			  struct usbvision_frame *frame,
-			  int x, int y, const char *str)
+void usbvision_scratch_free(struct usb_usbvision *usbvision)
 {
-	while (*str) {
-		usbvision_osd_char(usbvision, frame, x, y, *str);
-		str++;
-		x += 4;		/* 3 pixels character + 1 space */
+	if (usbvision->scratch != NULL) {
+		vfree(usbvision->scratch);
+		usbvision->scratch = NULL;
 	}
 }
 
 /*
- * usb_usbvision_osd_stats()
- *
- * On screen display of important debugging information.
- *
- */
-void usbvision_osd_stats(struct usb_usbvision *usbvision,
-			 struct usbvision_frame *frame)
-{
-	const int y_diff = 8;
-	char tmp[16];
-	int x = 10;
-	int y = 10;
-
-	sprintf(tmp, "%8x", usbvision->frame_num);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8lx", usbvision->isocUrbCount);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8lx", usbvision->urb_length);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8lx", usbvision->isocDataCount);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8lx", usbvision->header_count);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8lx", usbvision->scratch_ovf_count);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8lx", usbvision->isocSkipCount);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8lx", usbvision->isocErrCount);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8x", usbvision->saturation);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8x", usbvision->hue);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8x", usbvision->brightness >> 8);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-	sprintf(tmp, "%8x", usbvision->contrast >> 12);
-	usbvision_osd_string(usbvision, frame, x, y, tmp);
-	y += y_diff;
-
-}
-
-/*
  * usbvision_testpattern()
  *
  * Procedure forms a test pattern (yellow grid on blue background).
@@ -1287,14 +469,40 @@ void usbvision_testpattern(struct usb_usbvision *usbvision, int fullframe,
 	frame->scanlength += scan_length;
 	++num_pass;
 
-	/* We do this unconditionally, regardless of FLAGS_OSD_STATS */
-	usbvision_osd_stats(usbvision, frame);
 }
 
 /*
- * Here comes the data parsing stuff that is run as interrupt
+ * usbvision_decompress_alloc()
+ *
+ * allocates intermediate buffer for decompression
+ */
+int usbvision_decompress_alloc(struct usb_usbvision *usbvision)
+{
+	int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2;
+	usbvision->IntraFrameBuffer = vmalloc(IFB_size);
+	if (usbvision->IntraFrameBuffer == NULL) {
+		err("%s: unable to allocate %d for compr. frame buffer", __FUNCTION__, IFB_size);
+		return -ENOMEM;
+	}
+	return 0;
+}
+
+/*
+ * usbvision_decompress_free()
+ *
+ * frees intermediate buffer for decompression
  */
+void usbvision_decompress_free(struct usb_usbvision *usbvision)
+{
+	if (usbvision->IntraFrameBuffer != NULL) {
+		vfree(usbvision->IntraFrameBuffer);
+		usbvision->IntraFrameBuffer = NULL;
+	}
+}
 
+/************************************************************
+ * Here comes the data parsing stuff that is run as interrupt
+ ************************************************************/
 /*
  * usbvision_find_header()
  *
@@ -1305,12 +513,7 @@ static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision)
 	struct usbvision_frame *frame;
 	int foundHeader = 0;
 
-	if (usbvision->overlay) {
-		frame = &usbvision->overlay_frame;
-	}
-	else {
-		frame = usbvision->curFrame;
-	}
+	frame = usbvision->curFrame;
 
 	while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) {
 		// found header in scratch
@@ -1368,7 +571,7 @@ static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision)
 	frame->scanstate = ScanState_Lines;
 	frame->curline = 0;
 
-	if (flags & FLAGS_FORCE_TESTPATTERN) {
+	if (force_testpattern) {
 		usbvision_testpattern(usbvision, 1, 1);
 		return ParseState_NextFrame;
 	}
@@ -1385,22 +588,10 @@ static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision
 	unsigned char yuyv[4]={180, 128, 10, 128}; // YUV components
 	unsigned char rv, gv, bv;	// RGB components
 	int clipmask_index, bytes_per_pixel;
-	int overlay = usbvision->overlay;
 	int stretch_bytes, clipmask_add;
 
-	if (overlay) {
-		frame  = &usbvision->overlay_frame;
-		if (usbvision->overlay_base == NULL) {
-			//video_buffer is not set yet
-			return ParseState_NextFrame;
-		}
-		f = usbvision->overlay_win + frame->curline *
-			usbvision->vid_buf.fmt.bytesperline;
-	}
-	else {
-		frame  = usbvision->curFrame;
-		f = frame->data + (frame->v4l2_linesize * frame->curline);
-	}
+	frame  = usbvision->curFrame;
+	f = frame->data + (frame->v4l2_linesize * frame->curline);
 
 	/* Make sure there's enough data for the entire line */
 	len = (frame->isocHeader.frameWidth * 2)+5;
@@ -1422,10 +613,7 @@ static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision
 
 		scratch_get(usbvision, &yuyv[0], 4);
 
-		if((overlay) && (clipped_pixel(clipmask_index))) {
-			f += bytes_per_pixel;
-		}
-		else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+		if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
 			*f++ = yuyv[0]; // Y
 			*f++ = yuyv[3]; // U
 		}
@@ -1457,10 +645,7 @@ static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision
 		clipmask_index += clipmask_add;
 		f += stretch_bytes;
 
-		if((overlay) && (clipped_pixel(clipmask_index))) {
-			f += bytes_per_pixel;
-		}
-		else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+		if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
 			*f++ = yuyv[2]; // Y
 			*f++ = yuyv[1]; // V
 		}
@@ -1504,7 +689,7 @@ static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision
 	}
 }
 
-
+/* The decompression routine  */
 static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed,
 								unsigned char *Decompressed, int *StartPos,
 								int *BlockTypeStartPos, int Len)
@@ -1614,45 +799,31 @@ static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision,
 	unsigned char StripHeader[USBVISION_STRIP_HEADER_LEN];
 	int Idx, IdxEnd, StripLen, StripPtr, StartBlockPos, BlockPos, BlockTypePos;
 	int clipmask_index, bytes_per_pixel, rc;
-	int overlay = usbvision->overlay;
 	int imageSize;
 	unsigned char rv, gv, bv;
 	static unsigned char *Y, *U, *V;
 
-	if (overlay) {
-		frame  = &usbvision->overlay_frame;
-		imageSize = frame->frmwidth * frame->frmheight;
-		if (usbvision->overlay_base == NULL) {
-			//video_buffer is not set yet
-			return ParseState_NextFrame;
-		}
-		f = usbvision->overlay_win + frame->curline *
-			usbvision->vid_buf.fmt.bytesperline;
-	}
-	else {
-		frame  = usbvision->curFrame;
-		imageSize = frame->frmwidth * frame->frmheight;
-		if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||
-		     (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) )
-		{       // this is a planar format
-								       //... v4l2_linesize not used here.
-			f = frame->data + (frame->width * frame->curline);
-		} else
-			f = frame->data + (frame->v4l2_linesize * frame->curline);
-
-		if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers
-								 // get base of u and b planes add halfoffset
-
-			u = frame->data
-				+ imageSize
-				+ (frame->frmwidth >>1) * frame->curline ;
-			v = u + (imageSize >>1 );
-
-		} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){
-
-			v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ;
-			u = v + (imageSize >>2) ;
-		}
+	frame  = usbvision->curFrame;
+	imageSize = frame->frmwidth * frame->frmheight;
+	if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||
+	     (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) ) {       // this is a planar format
+		//... v4l2_linesize not used here.
+		f = frame->data + (frame->width * frame->curline);
+	} else
+		f = frame->data + (frame->v4l2_linesize * frame->curline);
+
+	if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers
+		// get base of u and b planes add halfoffset
+
+		u = frame->data
+			+ imageSize
+			+ (frame->frmwidth >>1) * frame->curline ;
+		v = u + (imageSize >>1 );
+
+	} else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){
+
+		v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ;
+		u = v + (imageSize >>2) ;
 	}
 
 	if (frame->curline == 0) {
@@ -1738,10 +909,7 @@ static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision,
 	}
 
 	for (Idx = 0; Idx < IdxEnd; Idx++) {
-		if((overlay) && (clipped_pixel(clipmask_index))) {
-			f += bytes_per_pixel;
-		}
-		else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+		if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
 			*f++ = Y[Idx];
 			*f++ = Idx & 0x01 ? U[Idx/2] : V[Idx/2];
 		}
@@ -1838,23 +1006,10 @@ static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision
 	unsigned char g;
 	int clipmask_even_index, clipmask_odd_index, bytes_per_pixel;
 	int clipmask_add, stretch_bytes;
-	int overlay = usbvision->overlay;
 
-	if (overlay) {
-		frame  = &usbvision->overlay_frame;
-		if (usbvision->overlay_base == NULL) {
-			//video_buffer is not set yet
-			return ParseState_NextFrame;
-		}
-		f_even = usbvision->overlay_win + frame->curline *
-			 usbvision->vid_buf.fmt.bytesperline;
-		f_odd  = f_even + usbvision->vid_buf.fmt.bytesperline * usbvision->stretch_height;
-	}
-	else {
-		frame  = usbvision->curFrame;
-		f_even = frame->data + (frame->v4l2_linesize * frame->curline);
-		f_odd  = f_even + frame->v4l2_linesize * usbvision->stretch_height;
-	}
+	frame  = usbvision->curFrame;
+	f_even = frame->data + (frame->v4l2_linesize * frame->curline);
+	f_odd  = f_even + frame->v4l2_linesize * usbvision->stretch_height;
 
 	/* Make sure there's enough data for the entire line */
 	/* In this mode usbvision transfer 3 bytes for every 2 pixels */
@@ -1901,10 +1056,7 @@ static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision
 			uvg= -53281 * u_ - 25625 * v_;
 			ur = 104595 * u_;
 
-			if((overlay) && (clipped_pixel(clipmask_even_index))) {
-				f_even += bytes_per_pixel;
-			}
-			else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+			if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
 				*f_even++ = y[0];
 				*f_even++ = v;
 			}
@@ -1943,10 +1095,7 @@ static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision
 			clipmask_even_index += clipmask_add;
 			f_even += stretch_bytes;
 
-			if((overlay) && (clipped_pixel(clipmask_even_index))) {
-				f_even += bytes_per_pixel;
-			}
-			else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+			if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
 				*f_even++ = y[1];
 				*f_even++ = u;
 			}
@@ -1987,10 +1136,7 @@ static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision
 
 			scratch_get_extra(usbvision, &y[0], &y_ptr, 2);
 
-			if ((overlay) && (clipped_pixel(clipmask_odd_index))) {
-				f_odd += bytes_per_pixel;
-			}
-			else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+			if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
 				*f_odd++ = y[0];
 				*f_odd++ = v;
 			}
@@ -2029,10 +1175,7 @@ static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision
 			clipmask_odd_index += clipmask_add;
 			f_odd += stretch_bytes;
 
-			if((overlay) && (clipped_pixel(clipmask_odd_index))) {
-				f_odd += bytes_per_pixel;
-			}
-			else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
+			if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
 				*f_odd++ = y[1];
 				*f_odd++ = u;
 			}
@@ -2108,12 +1251,7 @@ static void usbvision_parse_data(struct usb_usbvision *usbvision)
 	long copylen = 0;
 	unsigned long lock_flags;
 
-	if (usbvision->overlay) {
-		frame = &usbvision->overlay_frame;
-	}
-	else {
-		frame = usbvision->curFrame;
-	}
+	frame = usbvision->curFrame;
 
 	PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision));
 
@@ -2152,23 +1290,13 @@ static void usbvision_parse_data(struct usb_usbvision *usbvision)
 		frame->grabstate = FrameState_Done;
 		do_gettimeofday(&(frame->timestamp));
 		frame->sequence = usbvision->frame_num;
-		if (usbvision->overlay) {
-			frame->grabstate = FrameState_Grabbing;
-			frame->scanstate = ScanState_Scanning;
-			frame->scanlength = 0;
-			copylen = 0;
-		}
-		else {
-			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
-			list_move_tail(&(frame->frame), &usbvision->outqueue);
-			usbvision->curFrame = NULL;
-			spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
-		}
-		usbvision->frame_num++;
 
-		/* Optionally display statistics on the screen */
-		if (flags & FLAGS_OSD_STATS)
-			usbvision_osd_stats(usbvision, frame);
+		spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+		list_move_tail(&(frame->frame), &usbvision->outqueue);
+		usbvision->curFrame = NULL;
+		spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+
+		usbvision->frame_num++;
 
 		/* This will cause the process to request another frame. */
 		if (waitqueue_active(&usbvision->wait_frame)) {
@@ -2306,7 +1434,7 @@ static void usbvision_isocIrq(struct urb *urb, struct pt_regs *regs)
 		/* If we collected enough data let's parse! */
 		if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH) {	/* 12 == header_length */
 			/*If we don't have a frame we're current working on, complain */
-			if((!list_empty(&(usbvision->inqueue))) || (usbvision->overlay)) {
+			if(!list_empty(&(usbvision->inqueue))) {
 				if (!(*f)) {
 					(*f) = list_entry(usbvision->inqueue.next,struct usbvision_frame, frame);
 				}
@@ -2353,7 +1481,7 @@ static void usbvision_isocIrq(struct urb *urb, struct pt_regs *regs)
  *        >= 0 -> Data
  */
 
-static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg)
+int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg)
 {
 	int errCode = 0;
 	unsigned char buffer[1];
@@ -2381,7 +1509,7 @@ static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg
  *       -1 -> Something went wrong
  */
 
-static int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
+int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
 			    unsigned char value)
 {
 	int errCode = 0;
@@ -2454,8 +1582,6 @@ static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address,
 }
 
 
-
-
 static int usbvision_init_compression(struct usb_usbvision *usbvision)
 {
 	int errCode = 0;
@@ -2563,334 +1689,11 @@ static int usbvision_unrequest_intra (struct usb_usbvision *usbvision)
 	return errCode;
 }
 
-/* ----------------------------------------------------------------------- */
-/* I2C functions                                                           */
-/* ----------------------------------------------------------------------- */
+/*******************************
+ * usbvision utility functions
+ *******************************/
 
-static void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,
-			     void *arg)
-{
-	BUG_ON(NULL == usbvision->i2c_adap.algo_data);
-	i2c_clients_command(&usbvision->i2c_adap, cmd, arg);
-}
-
-static int attach_inform(struct i2c_client *client)
-{
-	struct usb_usbvision *usbvision;
-
-	usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
-
-	switch (client->addr << 1) {
-		case 0x43:
-		case 0x4b:
-		{
-			struct tuner_setup tun_setup;
-
-			tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
-			tun_setup.type = TUNER_TDA9887;
-			tun_setup.addr = client->addr;
-
-			call_i2c_clients(usbvision, TUNER_SET_TYPE_ADDR, &tun_setup);
-
-			break;
-		}
-		case 0x42:
-			PDEBUG(DBG_I2C,"attach_inform: saa7114 detected.\n");
-			break;
-		case 0x4a:
-			PDEBUG(DBG_I2C,"attach_inform: saa7113 detected.\n");
-			break;
-		case 0xa0:
-			PDEBUG(DBG_I2C,"attach_inform: eeprom detected.\n");
-			break;
-
-		default:
-			PDEBUG(DBG_I2C,"attach inform: detected I2C address %x\n", client->addr << 1);
-			{
-				struct tuner_setup tun_setup;
-
-				usbvision->tuner_addr = client->addr;
-
-				if ((usbvision->have_tuner) && (usbvision->tuner_type != -1)) {
-					tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
-					tun_setup.type = usbvision->tuner_type;
-					tun_setup.addr = usbvision->tuner_addr;
-					call_i2c_clients(usbvision, TUNER_SET_TYPE_ADDR, &tun_setup);
-				}
-			}
-			break;
-	}
-	return 0;
-}
-
-static int detach_inform(struct i2c_client *client)
-{
-	struct usb_usbvision *usbvision;
-
-	#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-		usbvision = (struct usb_usbvision *)client->adapter->data;
-	#else
-		usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
-	#endif
-
-	PDEBUG(DBG_I2C, "usbvision[%d] detaches %s", usbvision->nr, client->name);
-	return 0;
-}
-
-static int
-usbvision_i2c_read_max4(struct usb_usbvision *usbvision, unsigned char addr,
-		     char *buf, short len)
-{
-	int rc, retries;
-
-	for (retries = 5;;) {
-		rc = usbvision_write_reg(usbvision, USBVISION_SER_ADRS, addr);
-		if (rc < 0)
-			return rc;
-
-		/* Initiate byte read cycle                    */
-		/* USBVISION_SER_CONT <- d0-d2 n. of bytes to r/w */
-		/*                    d3 0=Wr 1=Rd             */
-		rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
-				      (len & 0x07) | 0x18);
-		if (rc < 0)
-			return rc;
-
-		/* Test for Busy and ACK */
-		do {
-			/* USBVISION_SER_CONT -> d4 == 0 busy */
-			rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
-		} while (rc > 0 && ((rc & 0x10) != 0));	/* Retry while busy */
-		if (rc < 0)
-			return rc;
-
-		/* USBVISION_SER_CONT -> d5 == 1 Not ack */
-		if ((rc & 0x20) == 0)	/* Ack? */
-			break;
-
-		/* I2C abort */
-		rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
-		if (rc < 0)
-			return rc;
-
-		if (--retries < 0)
-			return -1;
-	}
-
-	switch (len) {
-	case 4:
-		buf[3] = usbvision_read_reg(usbvision, USBVISION_SER_DAT4);
-	case 3:
-		buf[2] = usbvision_read_reg(usbvision, USBVISION_SER_DAT3);
-	case 2:
-		buf[1] = usbvision_read_reg(usbvision, USBVISION_SER_DAT2);
-	case 1:
-		buf[0] = usbvision_read_reg(usbvision, USBVISION_SER_DAT1);
-		break;
-	default:
-		printk(KERN_ERR
-		       "usbvision_i2c_read_max4: buffer length > 4\n");
-	}
-
-	if (debug & DBG_I2C) {
-		int idx;
-		for (idx = 0; idx < len; idx++) {
-			PDEBUG(DBG_I2C, "read %x from address %x", (unsigned char)buf[idx], addr);
-		}
-	}
-	return len;
-}
-
-
-static int usbvision_i2c_write_max4(struct usb_usbvision *usbvision,
-				 unsigned char addr, const char *buf,
-				 short len)
-{
-	int rc, retries;
-	int i;
-	unsigned char value[6];
-	unsigned char ser_cont;
-
-	ser_cont = (len & 0x07) | 0x10;
-
-	value[0] = addr;
-	value[1] = ser_cont;
-	for (i = 0; i < len; i++)
-		value[i + 2] = buf[i];
-
-	for (retries = 5;;) {
-		rc = usb_control_msg(usbvision->dev,
-				     usb_sndctrlpipe(usbvision->dev, 1),
-				     USBVISION_OP_CODE,
-				     USB_DIR_OUT | USB_TYPE_VENDOR |
-				     USB_RECIP_ENDPOINT, 0,
-				     (__u16) USBVISION_SER_ADRS, value,
-				     len + 2, HZ);
-
-		if (rc < 0)
-			return rc;
-
-		rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
-				      (len & 0x07) | 0x10);
-		if (rc < 0)
-			return rc;
-
-		/* Test for Busy and ACK */
-		do {
-			rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
-		} while (rc > 0 && ((rc & 0x10) != 0));	/* Retry while busy */
-		if (rc < 0)
-			return rc;
-
-		if ((rc & 0x20) == 0)	/* Ack? */
-			break;
-
-		/* I2C abort */
-		usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
-
-		if (--retries < 0)
-			return -1;
-
-	}
-
-	if (debug & DBG_I2C) {
-		int idx;
-		for (idx = 0; idx < len; idx++) {
-			PDEBUG(DBG_I2C, "wrote %x at address %x", (unsigned char)buf[idx], addr);
-		}
-	}
-	return len;
-}
-
-static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,
-			    short len)
-{
-	char *bufPtr = buf;
-	int retval;
-	int wrcount = 0;
-	int count;
-	int maxLen = 4;
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
-
-	while (len > 0) {
-		count = (len > maxLen) ? maxLen : len;
-		retval = usbvision_i2c_write_max4(usbvision, addr, bufPtr, count);
-		if (retval > 0) {
-			len -= count;
-			bufPtr += count;
-			wrcount += count;
-		} else
-			return (retval < 0) ? retval : -EFAULT;
-	}
-	return wrcount;
-}
-
-static int usbvision_i2c_read(void *data, unsigned char addr, char *buf,
-			   short len)
-{
-	char temp[4];
-	int retval, i;
-	int rdcount = 0;
-	int count;
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
-
-	while (len > 0) {
-		count = (len > 3) ? 4 : len;
-		retval = usbvision_i2c_read_max4(usbvision, addr, temp, count);
-		if (retval > 0) {
-			for (i = 0; i < len; i++)
-				buf[rdcount + i] = temp[i];
-			len -= count;
-			rdcount += count;
-		} else
-			return (retval < 0) ? retval : -EFAULT;
-	}
-	return rdcount;
-}
-
-static struct i2c_algo_usb_data i2c_algo_template = {
-	.data		= NULL,
-	.inb		= usbvision_i2c_read,
-	.outb		= usbvision_i2c_write,
-	.udelay		= 10,
-	.mdelay		= 10,
-	.timeout	= 100,
-};
-
-static struct i2c_adapter i2c_adap_template = {
-	.owner             = THIS_MODULE,
-	.name              = "usbvision",
-	.id                = I2C_HW_B_BT848, /* FIXME */
-	.algo              = NULL,
-	.algo_data         = NULL,
-	.client_register   = attach_inform,
-	.client_unregister = detach_inform,
-#if defined (I2C_ADAP_CLASS_TV_ANALOG)
-	.class             = I2C_ADAP_CLASS_TV_ANALOG,
-#elif defined (I2C_CLASS_TV_ANALOG)
-	.class		   = I2C_CLASS_TV_ANALOG,
-#endif
-};
-
-static struct i2c_client i2c_client_template = {
-	.name		= "usbvision internal",
-	.flags		= 0,
-	.addr		= 0,
-	.adapter	= NULL,
-	.driver		= NULL,
-};
-
-static int usbvision_init_i2c(struct usb_usbvision *usbvision)
-{
-	memcpy(&usbvision->i2c_adap, &i2c_adap_template,
-	       sizeof(struct i2c_adapter));
-	memcpy(&usbvision->i2c_algo, &i2c_algo_template,
-	       sizeof(struct i2c_algo_usb_data));
-	memcpy(&usbvision->i2c_client, &i2c_client_template,
-	       sizeof(struct i2c_client));
-
-	sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),
-		" #%d", usbvision->vdev->minor & 0x1f);
-	PDEBUG(DBG_I2C, "Adaptername: %s", usbvision->i2c_adap.name);
-
-	i2c_set_adapdata(&usbvision->i2c_adap, usbvision);
-	i2c_set_clientdata(&usbvision->i2c_client, usbvision);
-	i2c_set_algo_usb_data(&usbvision->i2c_algo, usbvision);
-
-	usbvision->i2c_adap.algo_data = &usbvision->i2c_algo;
-	usbvision->i2c_client.adapter = &usbvision->i2c_adap;
-
-	if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {
-		printk(KERN_ERR "usbvision_init_i2c: can't wirte reg\n");
-		return -EBUSY;
-	}
-
-#ifdef CONFIG_KMOD
-	/* Request the load of the i2c modules we need */
-	if (autoload) {
-		switch (usbvision_device_data[usbvision->DevModel].Codec) {
-			case CODEC_SAA7113:
-				request_module("saa7115");
-				break;
-			case CODEC_SAA7111:
-				request_module("saa7115");
-				break;
-		}
-		if (usbvision_device_data[usbvision->DevModel].Tuner == 1) {
-			request_module("tuner");
-		}
-	}
-#endif
-
-	return usbvision_i2c_usb_add_bus(&usbvision->i2c_adap);
-}
-
-
-/****************************/
-/* usbvision utility functions */
-/****************************/
-
-static int usbvision_power_off(struct usb_usbvision *usbvision)
+int usbvision_power_off(struct usb_usbvision *usbvision)
 {
 	int errCode = 0;
 
@@ -2905,22 +1708,6 @@ static int usbvision_power_off(struct usb_usbvision *usbvision)
 }
 
 
-// to call usbvision_power_off from task queue
-static void call_usbvision_power_off(void *_usbvision)
-{
-	struct usb_usbvision *usbvision = _usbvision;
-
-	PDEBUG(DBG_FUNC, "");
-	down_interruptible(&usbvision->lock);
-	if(usbvision->user == 0) {
-		usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
-		usbvision_power_off(usbvision);
-		usbvision->initialized = 0;
-	}
-	up(&usbvision->lock);
-}
-
-
 /*
  * usbvision_set_video_format()
  *
@@ -2964,8 +1751,8 @@ static int usbvision_set_video_format(struct usb_usbvision *usbvision, int forma
  *
  */
 
-static int usbvision_set_output(struct usb_usbvision *usbvision, int width,
-				  int height)
+int usbvision_set_output(struct usb_usbvision *usbvision, int width,
+			 int height)
 {
 	int errCode = 0;
 	int UsbWidth, UsbHeight;
@@ -3060,10 +1847,62 @@ static int usbvision_set_output(struct usb_usbvision *usbvision, int width,
 
 
 /*
+ * usbvision_frames_alloc
+ * allocate the maximum frames this driver can manage
+ */
+int usbvision_frames_alloc(struct usb_usbvision *usbvision)
+{
+	int i;
+
+	/* Allocate memory for the frame buffers */
+	usbvision->max_frame_size = MAX_FRAME_SIZE;
+	usbvision->fbuf_size = USBVISION_NUMFRAMES * usbvision->max_frame_size;
+	usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size);
+
+	if(usbvision->fbuf == NULL) {
+		err("%s: unable to allocate %d bytes for fbuf ",
+		    __FUNCTION__, usbvision->fbuf_size);
+		return -ENOMEM;
+	}
+	spin_lock_init(&usbvision->queue_lock);
+	init_waitqueue_head(&usbvision->wait_frame);
+	init_waitqueue_head(&usbvision->wait_stream);
+
+	/* Allocate all buffers */
+	for (i = 0; i < USBVISION_NUMFRAMES; i++) {
+		usbvision->frame[i].index = i;
+		usbvision->frame[i].grabstate = FrameState_Unused;
+		usbvision->frame[i].data = usbvision->fbuf +
+			i * usbvision->max_frame_size;
+		/*
+		 * Set default sizes for read operation.
+		 */
+		usbvision->stretch_width = 1;
+		usbvision->stretch_height = 1;
+		usbvision->frame[i].width = usbvision->curwidth;
+		usbvision->frame[i].height = usbvision->curheight;
+		usbvision->frame[i].bytes_read = 0;
+	}
+	return 0;
+}
+
+/*
+ * usbvision_frames_free
+ * frees memory allocated for the frames
+ */
+void usbvision_frames_free(struct usb_usbvision *usbvision)
+{
+	/* Have to free all that memory */
+	if (usbvision->fbuf != NULL) {
+		usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
+		usbvision->fbuf = NULL;
+	}
+}
+/*
  * usbvision_empty_framequeues()
  * prepare queues for incoming and outgoing frames
  */
-static void usbvision_empty_framequeues(struct usb_usbvision *usbvision)
+void usbvision_empty_framequeues(struct usb_usbvision *usbvision)
 {
 	u32 i;
 
@@ -3080,7 +1919,7 @@ static void usbvision_empty_framequeues(struct usb_usbvision *usbvision)
  * usbvision_stream_interrupt()
  * stops streaming
  */
-static int usbvision_stream_interrupt(struct usb_usbvision *usbvision)
+int usbvision_stream_interrupt(struct usb_usbvision *usbvision)
 {
 	int ret = 0;
 
@@ -3176,7 +2015,7 @@ static int usbvision_set_compress_params(struct usb_usbvision *usbvision)
  * I've no idea if this parameters are right
  *
  */
-static int usbvision_set_input(struct usb_usbvision *usbvision)
+int usbvision_set_input(struct usb_usbvision *usbvision)
 {
 	static const char proc[] = "usbvision_set_input: ";
 	int rc;
@@ -3351,7 +2190,7 @@ static int usbvision_set_dram_settings(struct usb_usbvision *usbvision)
  *
  */
 
-static int usbvision_power_on(struct usb_usbvision *usbvision)
+int usbvision_power_on(struct usb_usbvision *usbvision)
 {
 	int errCode = 0;
 
@@ -3372,6 +2211,25 @@ static int usbvision_power_on(struct usb_usbvision *usbvision)
 }
 
 
+/*
+ * usbvision timer stuff
+ */
+
+// to call usbvision_power_off from task queue
+static void call_usbvision_power_off(void *_usbvision)
+{
+	struct usb_usbvision *usbvision = _usbvision;
+
+	PDEBUG(DBG_FUNC, "");
+	down_interruptible(&usbvision->lock);
+	if(usbvision->user == 0) {
+		usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
+		usbvision_power_off(usbvision);
+		usbvision->initialized = 0;
+	}
+	up(&usbvision->lock);
+}
+
 static void usbvision_powerOffTimer(unsigned long data)
 {
 	struct usb_usbvision *usbvision = (void *) data;
@@ -3383,13 +2241,31 @@ static void usbvision_powerOffTimer(unsigned long data)
 
 }
 
+void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision)
+{
+	init_timer(&usbvision->powerOffTimer);
+	usbvision->powerOffTimer.data = (long) usbvision;
+	usbvision->powerOffTimer.function = usbvision_powerOffTimer;
+}
+
+void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision)
+{
+	mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
+}
+
+void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision)
+{
+	if (timer_pending(&usbvision->powerOffTimer)) {
+		del_timer(&usbvision->powerOffTimer);
+	}
+}
 
 /*
  * usbvision_begin_streaming()
  * Sure you have to put bit 7 to 0, if not incoming frames are droped, but no
  * idea about the rest
  */
-static int usbvision_begin_streaming(struct usb_usbvision *usbvision)
+int usbvision_begin_streaming(struct usb_usbvision *usbvision)
 {
 	int errCode = 0;
 
@@ -3406,7 +2282,7 @@ static int usbvision_begin_streaming(struct usb_usbvision *usbvision)
  * Not sure yet if touching here PWR_REG make loose the config
  */
 
-static int usbvision_restart_isoc(struct usb_usbvision *usbvision)
+int usbvision_restart_isoc(struct usb_usbvision *usbvision)
 {
 	int ret;
 
@@ -3433,41 +2309,18 @@ static int usbvision_restart_isoc(struct usb_usbvision *usbvision)
 	return 0;
 }
 
-static int usbvision_audio_on(struct usb_usbvision *usbvision)
-{
-	if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, usbvision->AudioChannel) < 0) {
-		printk(KERN_ERR "usbvision_audio_on: can't wirte reg\n");
-		return -1;
-	}
-	DEBUG(printk(KERN_DEBUG "usbvision_audio_on: channel %d\n", usbvision->AudioChannel));
-	usbvision->AudioMute = 0;
-	return 0;
-}
-
-static int usbvision_audio_mute(struct usb_usbvision *usbvision)
-{
-	if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, 0x03) < 0) {
-		printk(KERN_ERR "usbvision_audio_mute: can't wirte reg\n");
-		return -1;
-	}
-	DEBUG(printk(KERN_DEBUG "usbvision_audio_mute: audio mute\n"));
-	usbvision->AudioMute = 1;
-	return 0;
-}
-
-static int usbvision_audio_off(struct usb_usbvision *usbvision)
+int usbvision_audio_off(struct usb_usbvision *usbvision)
 {
 	if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) {
 		printk(KERN_ERR "usbvision_audio_off: can't wirte reg\n");
 		return -1;
 	}
-	DEBUG(printk(KERN_DEBUG "usbvision_audio_off: audio off\n"));
 	usbvision->AudioMute = 0;
 	usbvision->AudioChannel = USBVISION_AUDIO_MUTE;
 	return 0;
 }
 
-static int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel)
+int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel)
 {
 	if (!usbvision->AudioMute) {
 		if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) {
@@ -3475,14 +2328,13 @@ static int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel
 			return -1;
 		}
 	}
-	DEBUG(printk(KERN_DEBUG "usbvision_set_audio: channel %d\n", AudioChannel));
 	usbvision->AudioChannel = AudioChannel;
 	return 0;
 }
 
-static int usbvision_setup(struct usb_usbvision *usbvision)
+int usbvision_setup(struct usb_usbvision *usbvision,int format)
 {
-	usbvision_set_video_format(usbvision, isocMode);
+	usbvision_set_video_format(usbvision, format);
 	usbvision_set_dram_settings(usbvision);
 	usbvision_set_compress_params(usbvision);
 	usbvision_set_input(usbvision);
@@ -3494,11 +2346,44 @@ static int usbvision_setup(struct usb_usbvision *usbvision)
 }
 
 
+int usbvision_sbuf_alloc(struct usb_usbvision *usbvision)
+{
+	int i, errCode = 0;
+	const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE;
+
+	/* Clean pointers so we know if we allocated something */
+	for (i = 0; i < USBVISION_NUMSBUF; i++)
+		usbvision->sbuf[i].data = NULL;
+
+	for (i = 0; i < USBVISION_NUMSBUF; i++) {
+		usbvision->sbuf[i].data = kzalloc(sb_size, GFP_KERNEL);
+		if (usbvision->sbuf[i].data == NULL) {
+			err("%s: unable to allocate %d bytes for sbuf", __FUNCTION__, sb_size);
+			errCode = -ENOMEM;
+			break;
+		}
+	}
+	return errCode;
+}
+
+
+void usbvision_sbuf_free(struct usb_usbvision *usbvision)
+{
+	int i;
+
+	for (i = 0; i < USBVISION_NUMSBUF; i++) {
+		if (usbvision->sbuf[i].data != NULL) {
+			kfree(usbvision->sbuf[i].data);
+			usbvision->sbuf[i].data = NULL;
+		}
+	}
+}
+
 /*
  * usbvision_init_isoc()
  *
  */
-static int usbvision_init_isoc(struct usb_usbvision *usbvision)
+int usbvision_init_isoc(struct usb_usbvision *usbvision)
 {
 	struct usb_device *dev = usbvision->dev;
 	int bufIdx, errCode, regValue;
@@ -3587,7 +2472,7 @@ static int usbvision_init_isoc(struct usb_usbvision *usbvision)
  * activates zero-bandwidth alt. setting of the video interface.
  *
  */
-static void usbvision_stop_isoc(struct usb_usbvision *usbvision)
+void usbvision_stop_isoc(struct usb_usbvision *usbvision)
 {
 	int bufIdx, errCode, regValue;
 
@@ -3623,7 +2508,7 @@ static void usbvision_stop_isoc(struct usb_usbvision *usbvision)
 	}
 }
 
-static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
+int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
 {
 	int mode[4];
 	int audio[]= {1, 0, 0, 0};
@@ -3671,2157 +2556,6 @@ static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
 	return 0;
 }
 
-
-/*
- * usbvision_open()
- *
- * This is part of Video 4 Linux API. The driver can be opened by one
- * client only (checks internal counter 'usbvision->user'). The procedure
- * then allocates buffers needed for video processing.
- *
- */
-static int usbvision_v4l2_open(struct inode *inode, struct file *file)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-	const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE;
-	int i, errCode = 0;
-
-	PDEBUG(DBG_IO, "open");
-
-
-	if (timer_pending(&usbvision->powerOffTimer)) {
-		del_timer(&usbvision->powerOffTimer);
-	}
-
-	if (usbvision->user)
-		errCode = -EBUSY;
-	else {
-		/* Clean pointers so we know if we allocated something */
-		for (i = 0; i < USBVISION_NUMSBUF; i++)
-			usbvision->sbuf[i].data = NULL;
-
-		/* Allocate memory for the frame buffers */
-		usbvision->max_frame_size = MAX_FRAME_SIZE;
-		usbvision->fbuf_size = USBVISION_NUMFRAMES * usbvision->max_frame_size;
-		usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size);
-		usbvision->scratch = vmalloc(scratch_buf_size);
-		scratch_reset(usbvision);
-		if ((usbvision->fbuf == NULL) || (usbvision->scratch == NULL)) {
-			err("%s: unable to allocate %d bytes for fbuf and %d bytes for scratch",
-					__FUNCTION__, usbvision->fbuf_size, scratch_buf_size);
-			errCode = -ENOMEM;
-		}
-		else {
-			spin_lock_init(&usbvision->queue_lock);
-			init_waitqueue_head(&usbvision->wait_frame);
-			init_waitqueue_head(&usbvision->wait_stream);
-
-			/* Allocate all buffers */
-			for (i = 0; i < USBVISION_NUMFRAMES; i++) {
-				usbvision->frame[i].index = i;
-				usbvision->frame[i].grabstate = FrameState_Unused;
-				usbvision->frame[i].data = usbvision->fbuf +
-				    i * MAX_FRAME_SIZE;
-				/*
-				 * Set default sizes in case IOCTL
-				 * (VIDIOCMCAPTURE)
-				 * is not used (using read() instead).
-				 */
-				usbvision->stretch_width = 1;
-				usbvision->stretch_height = 1;
-				usbvision->frame[i].width = usbvision->curwidth;
-				usbvision->frame[i].height = usbvision->curheight;
-				usbvision->frame[i].bytes_read = 0;
-			}
-			if (dga) { //set default for DGA
-				usbvision->overlay_frame.grabstate = FrameState_Unused;
-				usbvision->overlay_frame.scanstate = ScanState_Scanning;
-				usbvision->overlay_frame.data = NULL;
-				usbvision->overlay_frame.width = usbvision->curwidth;
-				usbvision->overlay_frame.height = usbvision->curheight;
-				usbvision->overlay_frame.bytes_read = 0;
-			}
-			for (i = 0; i < USBVISION_NUMSBUF; i++) {
-				usbvision->sbuf[i].data = kzalloc(sb_size, GFP_KERNEL);
-				if (usbvision->sbuf[i].data == NULL) {
-					err("%s: unable to allocate %d bytes for sbuf", __FUNCTION__, sb_size);
-					errCode = -ENOMEM;
-					break;
-				}
-			}
-		}
-		if ((!errCode) && (usbvision->isocMode==ISOC_MODE_COMPRESS)) {
-			int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2;
-			usbvision->IntraFrameBuffer = vmalloc(IFB_size);
-			if (usbvision->IntraFrameBuffer == NULL) {
-				err("%s: unable to allocate %d for compr. frame buffer", __FUNCTION__, IFB_size);
-				errCode = -ENOMEM;
-			}
-
-		}
-		if (errCode) {
-			/* Have to free all that memory */
-			if (usbvision->fbuf != NULL) {
-				usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
-				usbvision->fbuf = NULL;
-			}
-			if (usbvision->scratch != NULL) {
-				vfree(usbvision->scratch);
-				usbvision->scratch = NULL;
-			}
-			for (i = 0; i < USBVISION_NUMSBUF; i++) {
-				if (usbvision->sbuf[i].data != NULL) {
-					kfree(usbvision->sbuf[i].data);
-					usbvision->sbuf[i].data = NULL;
-				}
-			}
-			if (usbvision->IntraFrameBuffer != NULL) {
-				vfree(usbvision->IntraFrameBuffer);
-				usbvision->IntraFrameBuffer = NULL;
-			}
-		}
-	}
-
-	/* If so far no errors then we shall start the camera */
-	if (!errCode) {
-		down(&usbvision->lock);
-		if (usbvision->power == 0) {
-			usbvision_power_on(usbvision);
-			usbvision_init_i2c(usbvision);
-		}
-
-		/* Send init sequence only once, it's large! */
-		if (!usbvision->initialized) {
-			int setup_ok = 0;
-			setup_ok = usbvision_setup(usbvision);
-			if (setup_ok)
-				usbvision->initialized = 1;
-			else
-				errCode = -EBUSY;
-		}
-
-		if (!errCode) {
-			usbvision_begin_streaming(usbvision);
-			errCode = usbvision_init_isoc(usbvision);
-			/* device needs to be initialized before isoc transfer */
-			usbvision_muxsel(usbvision,0);
-			usbvision->user++;
-		}
-		else {
-			if (PowerOnAtOpen) {
-				usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
-				usbvision_power_off(usbvision);
-				usbvision->initialized = 0;
-			}
-		}
-		up(&usbvision->lock);
-	}
-
-	if (errCode) {
-	}
-
-	/* prepare queues */
-	usbvision_empty_framequeues(usbvision);
-
-	PDEBUG(DBG_IO, "success");
-	return errCode;
-}
-
-/*
- * usbvision_v4l2_close()
- *
- * This is part of Video 4 Linux API. The procedure
- * stops streaming and deallocates all buffers that were earlier
- * allocated in usbvision_v4l2_open().
- *
- */
-static int usbvision_v4l2_close(struct inode *inode, struct file *file)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-	int i;
-
-	PDEBUG(DBG_IO, "close");
-	down(&usbvision->lock);
-
-	usbvision_audio_off(usbvision);
-	usbvision_restart_isoc(usbvision);
-	usbvision_stop_isoc(usbvision);
-
-	if (usbvision->IntraFrameBuffer != NULL) {
-		vfree(usbvision->IntraFrameBuffer);
-		usbvision->IntraFrameBuffer = NULL;
-	}
-
-	usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
-	vfree(usbvision->scratch);
-	for (i = 0; i < USBVISION_NUMSBUF; i++)
-		kfree(usbvision->sbuf[i].data);
-
-	usbvision->user--;
-
-	if (PowerOnAtOpen) {
-		mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
-		usbvision->initialized = 0;
-	}
-
-	up(&usbvision->lock);
-
-	if (usbvision->remove_pending) {
-		info("%s: Final disconnect", __FUNCTION__);
-		usbvision_release(usbvision);
-	}
-
-	PDEBUG(DBG_IO, "success");
-
-
-	return 0;
-}
-
-
-/*
- * usbvision_ioctl()
- *
- * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
- *
- */
-static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
-				 unsigned int cmd, void *arg)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-
-	if (!USBVISION_IS_OPERATIONAL(usbvision))
-		return -EFAULT;
-
-	//	if (debug & DBG_IOCTL) v4l_printk_ioctl(cmd);
-
-	switch (cmd) {
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-		/* ioctls to allow direct acces to the NT100x registers */
-		case VIDIOC_INT_G_REGISTER:
-		{
-			struct v4l2_register *reg = arg;
-			int errCode;
-
-			if (reg->i2c_id != 0)
-				return -EINVAL;
-			/* NT100x has a 8-bit register space */
-			errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
-			if (errCode < 0) {
-				err("%s: VIDIOC_INT_G_REGISTER failed: error %d", __FUNCTION__, errCode);
-			}
-			else {
-				reg->val=(unsigned char)errCode;
-				PDEBUG(DBG_IOCTL, "VIDIOC_INT_G_REGISTER reg=0x%02X, value=0x%02X",
-							(unsigned int)reg->reg, reg->val);
-				errCode = 0; // No error
-			}
-			return errCode;
-		}
-		case VIDIOC_INT_S_REGISTER:
-		{
-			struct v4l2_register *reg = arg;
-			int errCode;
-
-			if (reg->i2c_id != 0)
-				return -EINVAL;
-			if (!capable(CAP_SYS_ADMIN))
-				return -EPERM;
-			errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
-			if (errCode < 0) {
-				err("%s: VIDIOC_INT_S_REGISTER failed: error %d", __FUNCTION__, errCode);
-			}
-			else {
-				PDEBUG(DBG_IOCTL, "VIDIOC_INT_S_REGISTER reg=0x%02X, value=0x%02X",
-							(unsigned int)reg->reg, reg->val);
-				errCode = 0;
-			}
-			return 0;
-		}
-#endif
-		case VIDIOC_QUERYCAP:
-		{
-			struct v4l2_capability *vc=arg;
-
-			memset(vc, 0, sizeof(*vc));
-			strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
-			strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
-				sizeof(vc->card));
-			strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
-				sizeof(vc->bus_info));
-			vc->version = USBVISION_DRIVER_VERSION;
-			vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
-				V4L2_CAP_AUDIO |
-				V4L2_CAP_READWRITE |
-				V4L2_CAP_STREAMING |
-				(dga ? (V4L2_FBUF_CAP_LIST_CLIPPING | V4L2_CAP_VIDEO_OVERLAY) : 0) |
-				(usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
-			PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
-			return 0;
-		}
-		case VIDIOC_ENUMINPUT:
-		{
-			struct v4l2_input *vi = arg;
-			int chan;
-
-			if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
-				return -EINVAL;
-			if (usbvision->have_tuner) {
-				chan = vi->index;
-			}
-			else {
-				chan = vi->index + 1; //skip Television string
-			}
-			switch(chan) {
-				case 0:
-					if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
-						strcpy(vi->name, "White Video Input");
-					}
-					else {
-						strcpy(vi->name, "Television");
-						vi->type = V4L2_INPUT_TYPE_TUNER;
-						vi->audioset = 1;
-						vi->tuner = chan;
-						vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
-					}
-					break;
-				case 1:
-					vi->type = V4L2_INPUT_TYPE_CAMERA;
-					if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
-						strcpy(vi->name, "Green Video Input");
-					}
-					else {
-						strcpy(vi->name, "Composite Video Input");
-					}
-					vi->std = V4L2_STD_PAL;
-					break;
-				case 2:
-					vi->type = V4L2_INPUT_TYPE_CAMERA;
-					if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
-						strcpy(vi->name, "Yellow Video Input");
-					}
-					else {
-					strcpy(vi->name, "S-Video Input");
-					}
-					vi->std = V4L2_STD_PAL;
-					break;
-				case 3:
-					vi->type = V4L2_INPUT_TYPE_CAMERA;
-					strcpy(vi->name, "Red Video Input");
-					vi->std = V4L2_STD_PAL;
-					break;
-			}
-			PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x", vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
-			return 0;
-		}
-		case VIDIOC_ENUMSTD:
-		{
-			struct v4l2_standard *e = arg;
-			unsigned int i;
-			int ret;
-
-			i = e->index;
-			if (i >= TVNORMS)
-				return -EINVAL;
-			ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
-						       tvnorms[e->index].name);
-			e->index = i;
-			if (ret < 0)
-				return ret;
-			return 0;
-		}
-		case VIDIOC_G_INPUT:
-		{
-			int *input = arg;
-			*input = usbvision->ctl_input;
-			return 0;
-		}
-		case VIDIOC_S_INPUT:
-		{
-			int *input = arg;
-			if ((*input >= usbvision->video_inputs) || (*input < 0) )
-				return -EINVAL;
-			usbvision->ctl_input = *input;
-
-			down(&usbvision->lock);
-			usbvision_muxsel(usbvision, usbvision->ctl_input);
-			usbvision_set_input(usbvision);
-			usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
-			up(&usbvision->lock);
-			return 0;
-		}
-		case VIDIOC_G_STD:
-		{
-			v4l2_std_id *id = arg;
-
-			*id = usbvision->tvnorm->id;
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
-			return 0;
-		}
-		case VIDIOC_S_STD:
-		{
-			v4l2_std_id *id = arg;
-			unsigned int i;
-
-			for (i = 0; i < TVNORMS; i++)
-				if (*id == tvnorms[i].id)
-					break;
-			if (i == TVNORMS)
-				for (i = 0; i < TVNORMS; i++)
-					if (*id & tvnorms[i].id)
-						break;
-			if (i == TVNORMS)
-				return -EINVAL;
-
-			down(&usbvision->lock);
-			usbvision->tvnorm = &tvnorms[i];
-
-			call_i2c_clients(usbvision, VIDIOC_S_STD,
-					 &usbvision->tvnorm->id);
-
-			up(&usbvision->lock);
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
-			return 0;
-		}
-		case VIDIOC_G_TUNER:
-		{
-			struct v4l2_tuner *vt = arg;
-
-			if (!usbvision->have_tuner || vt->index)	// Only tuner 0
-				return -EINVAL;
-			strcpy(vt->name, "Television");
-			/* Let clients fill in the remainder of this struct */
-			call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
-			return 0;
-		}
-		case VIDIOC_S_TUNER:
-		{
-			struct v4l2_tuner *vt = arg;
-
-			// Only no or one tuner for now
-			if (!usbvision->have_tuner || vt->index)
-				return -EINVAL;
-			/* let clients handle this */
-			call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
-			return 0;
-		}
-		case VIDIOC_G_FREQUENCY:
-		{
-			struct v4l2_frequency *freq = arg;
-
-			freq->tuner = 0; // Only one tuner
-			freq->type = V4L2_TUNER_ANALOG_TV;
-			freq->frequency = usbvision->freq;
-			PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
-			return 0;
-		}
-		case VIDIOC_S_FREQUENCY:
-		{
-			struct v4l2_frequency *freq = arg;
-
-			// Only no or one tuner for now
-			if (!usbvision->have_tuner || freq->tuner)
-				return -EINVAL;
-
-			usbvision->freq = freq->frequency;
-			call_i2c_clients(usbvision, cmd, freq);
-			PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
-			return 0;
-		}
-		case VIDIOC_G_AUDIO:
-		{
-			struct v4l2_audio *v = arg;
-			memset(v,0, sizeof(v));
-			strcpy(v->name, "TV");
-			PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
-			// FIXME: no more processings ???
-			return 0;
-		}
-		case VIDIOC_S_AUDIO:
-		{
-			struct v4l2_audio *v = arg;
-			if(v->index) {
-				return -EINVAL;
-			}
-			PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
-			// FIXME: void function ???
-			return 0;
-		}
-		case VIDIOC_QUERYCTRL:
-		{
-			struct v4l2_queryctrl *ctrl = arg;
-			int id=ctrl->id;
-
-			memset(ctrl,0,sizeof(*ctrl));
-			ctrl->id=id;
-
-			call_i2c_clients(usbvision, cmd, arg);
-
-			if (ctrl->type)
-				return 0;
-			else
-				return -EINVAL;
-
-			PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
-		}
-		case VIDIOC_G_CTRL:
-		{
-			struct v4l2_control *ctrl = arg;
-
-			PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
-			call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
-			return 0;
-		}
-		case VIDIOC_S_CTRL:
-		{
-			struct v4l2_control *ctrl = arg;
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
-			call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
-			return 0;
-		}
-		case VIDIOC_REQBUFS:
-		{
-			struct v4l2_requestbuffers *vr = arg;
-			int ret;
-
-			RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
-
-			// Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
-			if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
-			   (vr->memory != V4L2_MEMORY_MMAP))
-				return -EINVAL;
-
-			// FIXME : before this, we must control if buffers are still mapped.
-			// Then interrupt streaming if so...
-			if(usbvision->streaming == Stream_On) {
-				if ((ret = usbvision_stream_interrupt(usbvision)))
-				    return ret;
-			}
-
-			usbvision_empty_framequeues(usbvision);
-
-			usbvision->curFrame = NULL;
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
-			return 0;
-		}
-		case VIDIOC_QUERYBUF:
-		{
-			struct v4l2_buffer *vb = arg;
-			struct usbvision_frame *frame;
-
-			// FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
-
-			if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
-				return -EINVAL;
-			}
-			if(vb->index>=USBVISION_NUMFRAMES)  {
-				return -EINVAL;
-			}
-			// Updating the corresponding frame state
-			vb->flags = 0;
-			frame = &usbvision->frame[vb->index];
-			if(frame->grabstate >= FrameState_Ready)
-				vb->flags |= V4L2_BUF_FLAG_QUEUED;
-			if(frame->grabstate >= FrameState_Done)
-				vb->flags |= V4L2_BUF_FLAG_DONE;
-			if(frame->grabstate == FrameState_Unused)
-				vb->flags |= V4L2_BUF_FLAG_MAPPED;
-			vb->memory = V4L2_MEMORY_MMAP;
-
-			vb->m.offset = vb->index*MAX_FRAME_SIZE;
-
-			vb->memory = V4L2_MEMORY_MMAP;
-			vb->field = V4L2_FIELD_NONE;
-			vb->length = MAX_FRAME_SIZE;
-			vb->timestamp = usbvision->frame[vb->index].timestamp;
-			vb->sequence = usbvision->frame[vb->index].sequence;
-			return 0;
-		}
-		case VIDIOC_QBUF:
-		{
-			struct v4l2_buffer *vb = arg;
-			struct usbvision_frame *frame;
-			unsigned long lock_flags;
-
-			// FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
-			if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
-				return -EINVAL;
-			}
-			if(vb->index>=USBVISION_NUMFRAMES)  {
-				return -EINVAL;
-			}
-
-			frame = &usbvision->frame[vb->index];
-
-			if (frame->grabstate != FrameState_Unused) {
-				return -EAGAIN;
-			}
-
-			/* Mark it as ready and enqueue frame */
-			frame->grabstate = FrameState_Ready;
-			frame->scanstate = ScanState_Scanning;
-			frame->scanlength = 0;	/* Accumulated in usbvision_parse_data() */
-
-			vb->flags &= ~V4L2_BUF_FLAG_DONE;
-
-			/* set v4l2_format index */
-			frame->v4l2_format = usbvision->palette;
-
-			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
-			list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
-			spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
-			return 0;
-		}
-		case VIDIOC_DQBUF:
-		{
-			struct v4l2_buffer *vb = arg;
-			int ret;
-			struct usbvision_frame *f;
-			unsigned long lock_flags;
-
-			if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-				return -EINVAL;
-
-			if (list_empty(&(usbvision->outqueue))) {
-				if (usbvision->streaming == Stream_Idle)
-					return -EINVAL;
-				ret = wait_event_interruptible
-					(usbvision->wait_frame,
-					 !list_empty(&(usbvision->outqueue)));
-				if (ret)
-					return ret;
-			}
-
-			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
-			f = list_entry(usbvision->outqueue.next,
-				       struct usbvision_frame, frame);
-			list_del(usbvision->outqueue.next);
-			spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
-
-			f->grabstate = FrameState_Unused;
-
-			vb->memory = V4L2_MEMORY_MMAP;
-			vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
-			vb->index = f->index;
-			vb->sequence = f->sequence;
-			vb->timestamp = f->timestamp;
-			vb->field = V4L2_FIELD_NONE;
-			vb->bytesused = f->scanlength;
-
-			if(debug & DBG_IOCTL) { // do not spend computing time for debug stuff if not needed !
-				if(usbvision_counter == 100) {
-					PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF delta=%d",(unsigned)(jiffies-usbvision_timestamp));
-					usbvision_counter = 0;
-					usbvision_timestamp = jiffies;
-				}
-				else {
-					usbvision_counter++;
-				}
-				PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF frame #%d",vb->index);
-			}
-			return 0;
-		}
-		case VIDIOC_STREAMON:
-		{
-			int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-			usbvision->streaming = Stream_On;
-
-			if(debug & DBG_IOCTL) usbvision_timestamp = jiffies;
-
-			call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
-
-			return 0;
-		}
-		case VIDIOC_STREAMOFF:
-		{
-			int *type = arg;
-			int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
-			if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-				return -EINVAL;
-
-			if(usbvision->streaming == Stream_On) {
-				usbvision_stream_interrupt(usbvision);
-				// Stop all video streamings
-				call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
-			}
-			usbvision_empty_framequeues(usbvision);
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
-			return 0;
-		}
-		case VIDIOC_G_FBUF:
-		{
-			struct v4l2_framebuffer *vb = arg;
-
-			if (dga) {
-				*vb = usbvision->vid_buf;
-			}
-			else {
-				memset(vb, 0, sizeof(vb)); //dga not supported, not used
-			}
-			PDEBUG(DBG_IOCTL, "VIDIOC_G_FBUF base=%p, width=%d, height=%d, pixelformat=%d, bpl=%d",
-			       vb->base, vb->fmt.width, vb->fmt.height, vb->fmt.pixelformat,vb->fmt.bytesperline);
-			return 0;
-		}
-		case VIDIOC_S_FBUF:
-		{
-			struct v4l2_framebuffer *vb = arg;
-			int formatIdx;
-
-			if (dga == 0) {
-				return -EINVAL;
-			}
-
-			if(!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_ADMIN)) {
-				return -EPERM;
-			}
-
-			PDEBUG(DBG_IOCTL, "VIDIOC_S_FBUF base=%p, width=%d, height=%d, pixelformat=%d, bpl=%d",
-			       vb->base, vb->fmt.width, vb->fmt.height, vb->fmt.pixelformat,vb->fmt.bytesperline);
-
-			for (formatIdx=0; formatIdx <= USBVISION_SUPPORTED_PALETTES; formatIdx++) {
-				if (formatIdx == USBVISION_SUPPORTED_PALETTES) {
-					return -EINVAL; // no matching video_format
-				}
-				if ((vb->fmt.pixelformat == usbvision_v4l2_format[formatIdx].format) &&
-				    (usbvision_v4l2_format[formatIdx].supported)) {
-					break; //found matching video_format
-				}
-			}
-
-			if (vb->fmt.bytesperline<1) {
-				return -EINVAL;
-			}
-			if (usbvision->overlay) {
-				return -EBUSY;
-			}
-			down(&usbvision->lock);
-			if (usbvision->overlay_base) {
-				iounmap(usbvision->overlay_base);
-				usbvision->vid_buf_valid = 0;
-			}
-			usbvision->overlay_base = ioremap((ulong)vb->base, vb->fmt.height * vb->fmt.bytesperline);
-			if (usbvision->overlay_base) {
-				usbvision->vid_buf_valid = 1;
-			}
-			usbvision->vid_buf = *vb;
-			usbvision->overlay_frame.v4l2_format = usbvision_v4l2_format[formatIdx];
-			up(&usbvision->lock);
-			return 0;
-		}
-		case VIDIOC_ENUM_FMT:
-		{
-			struct v4l2_fmtdesc *vfd = arg;
-
-			if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
-				return -EINVAL;
-			}
-			vfd->flags = 0;
-			vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-			strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
-			vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
-			memset(vfd->reserved, 0, sizeof(vfd->reserved));
-			return 0;
-		}
-		case VIDIOC_G_FMT:
-		{
-			struct v4l2_format *vf = arg;
-
-			switch (vf->type) {
-				case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-				{
-					vf->fmt.pix.width = usbvision->curwidth;
-					vf->fmt.pix.height = usbvision->curheight;
-					vf->fmt.pix.pixelformat = usbvision->palette.format;
-					vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
-					vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
-					vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
-					vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
-				}
-				return 0;
-				default:
-					PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
-					return -EINVAL;
-			}
-			PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d",vf->fmt.win.w.width, vf->fmt.win.w.height);
-			return 0;
-		}
-		case VIDIOC_TRY_FMT:
-		case VIDIOC_S_FMT:
-		{
-			struct v4l2_format *vf = arg;
-			struct v4l2_clip *vc=NULL;
-			int on,formatIdx;
-
-			switch(vf->type) {
-				case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-				{
-					if (vf->fmt.win.clipcount>256) {
-						return -EDOM;   /* Too many clips! */
-					}
-					// Do every clips.
-					vc = vmalloc(sizeof(struct v4l2_clip)*(vf->fmt.win.clipcount+4));
-					if (vc == NULL) {
-						return -ENOMEM;
-					}
-					if (vf->fmt.win.clipcount && copy_from_user(vc,vf->fmt.win.clips,sizeof(struct v4l2_clip)*vf->fmt.win.clipcount)) {
-						return -EFAULT;
-					}
-					on = usbvision->overlay;	// Save overlay state
-					if (on) {
-						usbvision_cap(usbvision, 0);
-					}
-
-					// strange, it seems xawtv sometimes calls us with 0
-					// width and/or height. Ignore these values
-					if (vf->fmt.win.w.left == 0) {
-						vf->fmt.win.w.left = usbvision->vid_win.fmt.win.w.left;
-					}
-					if (vf->fmt.win.w.top == 0) {
-						vf->fmt.win.w.top = usbvision->vid_win.fmt.win.w.top;
-					}
-
-					// by now we are committed to the new data...
-					down(&usbvision->lock);
-					RESTRICT_TO_RANGE(vf->fmt.win.w.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
-					RESTRICT_TO_RANGE(vf->fmt.win.w.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
-					usbvision->vid_win = *vf;
-					usbvision->overlay_frame.width = vf->fmt.win.w.width;
-					usbvision->overlay_frame.height = vf->fmt.win.w.height;
-					usbvision_set_output(usbvision, vf->fmt.win.w.width, vf->fmt.win.w.height);
-					up(&usbvision->lock);
-
-					// Impose display clips
-					if (vf->fmt.win.w.left+vf->fmt.win.w.width > (unsigned int)usbvision->vid_buf.fmt.width) {
-						usbvision_new_clip(vf, vc, usbvision->vid_buf.fmt.width-vf->fmt.win.w.left, 0, vf->fmt.win.w.width-1, vf->fmt.win.w.height-1);
-					}
-					if (vf->fmt.win.w.top+vf->fmt.win.w.height > (unsigned int)usbvision->vid_buf.fmt.height) {
-						usbvision_new_clip(vf, vc, 0, usbvision->vid_buf.fmt.height-vf->fmt.win.w.top, vf->fmt.win.w.width-1, vf->fmt.win.w.height-1);
-					}
-
-					// built the requested clipping zones
-					usbvision_built_overlay(usbvision, vf->fmt.win.clipcount, vc);
-					vfree(vc);
-
-					// restore overlay state
-					if (on) {
-						usbvision_cap(usbvision, 1);
-					}
-					usbvision->vid_win_valid = 1;
-					PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT overlay x=%d, y=%d, w=%d, h=%d, chroma=%x, clips=%d",
-					       vf->fmt.win.w.left, vf->fmt.win.w.top, vf->fmt.win.w.width, vf->fmt.win.w.height, vf->fmt.win.chromakey, vf->fmt.win.clipcount);
-					return 0;
-				}
-				case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-				{
-					/* Find requested format in available ones */
-					for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
-						if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
-							usbvision->palette = usbvision_v4l2_format[formatIdx];
-							break;
-						}
-					}
-					/* robustness */
-					if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
-						return -EINVAL;
-					}
-					RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
-					RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
-					// by now we are committed to the new data...
-					down(&usbvision->lock);
-					usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
-					up(&usbvision->lock);
-
-					PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
-					       vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
-					return 0;
-				}
-				default:
-					return -EINVAL;
-			}
-		}
-		case VIDIOC_OVERLAY:
-		{
-			int *v = arg;
-
-			if ( (dga == 0) &&
-			     (usbvision->palette.format != V4L2_PIX_FMT_YVU420) &&
-			     (usbvision->palette.format != V4L2_PIX_FMT_YUV422P) ) {
-				PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY  DGA disabled");
-				return -EINVAL;
-			}
-
-			if (*v == 0) {
-				usbvision_cap(usbvision, 0);
-			}
-			else {
-				// are VIDIOCSFBUF and VIDIOCSWIN done?
-				if ((usbvision->vid_buf_valid == 0) || (usbvision->vid_win_valid == 0)) {
-					PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY  vid_buf_valid %d; vid_win_valid %d",
-					       usbvision->vid_buf_valid, usbvision->vid_win_valid);
-					return -EINVAL;
-				}
-				usbvision_cap(usbvision, 1);
-			}
-			PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY %s", (*v)?"on":"off");
-			return 0;
-		}
-		default:
-			return -ENOIOCTLCMD;
-	}
-	return 0;
-}
-
-static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
-		       unsigned int cmd, unsigned long arg)
-{
-	return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
-}
-
-
-static ssize_t usbvision_v4l2_read(struct file *file, char *buf,
-		      size_t count, loff_t *ppos)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-	int noblock = file->f_flags & O_NONBLOCK;
-	unsigned long lock_flags;
-
-	int frmx = -1;
-	int ret,i;
-	struct usbvision_frame *frame;
-
-	PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
-
-	if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
-		return -EFAULT;
-
-	/* no stream is running, make it running ! */
-	usbvision->streaming = Stream_On;
-	call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
-
-	/* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
-	for(i=0;i<USBVISION_NUMFRAMES;i++) {
-		frame = &usbvision->frame[i];
-		if(frame->grabstate == FrameState_Unused) {
-			/* Mark it as ready and enqueue frame */
-			frame->grabstate = FrameState_Ready;
-			frame->scanstate = ScanState_Scanning;
-			frame->scanlength = 0;	/* Accumulated in usbvision_parse_data() */
-
-			/* set v4l2_format index */
-			frame->v4l2_format = usbvision->palette;
-
-			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
-			list_add_tail(&frame->frame, &usbvision->inqueue);
-			spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
-		}
-	}
-
-	/* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
-	if (list_empty(&(usbvision->outqueue))) {
-		if(noblock)
-			return -EAGAIN;
-
-		ret = wait_event_interruptible
-			(usbvision->wait_frame,
-			 !list_empty(&(usbvision->outqueue)));
-		if (ret)
-			return ret;
-	}
-
-	spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
-	frame = list_entry(usbvision->outqueue.next,
-			   struct usbvision_frame, frame);
-	list_del(usbvision->outqueue.next);
-	spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
-
-	if(debug & DBG_IOCTL) { // do not spend computing time for debug stuff if not needed !
-		if(usbvision_counter == 100) {
-			PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF delta=%d",(unsigned)(jiffies-usbvision_timestamp));
-			usbvision_counter = 0;
-			usbvision_timestamp = jiffies;
-		}
-		else {
-			usbvision_counter++;
-		}
-	}
-
-	/* An error returns an empty frame */
-	if (frame->grabstate == FrameState_Error) {
-		frame->bytes_read = 0;
-		return 0;
-	}
-
-	PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
-		       frame->index, frame->bytes_read, frame->scanlength);
-
-	/* copy bytes to user space; we allow for partials reads */
-	if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
-		count = frame->scanlength - frame->bytes_read;
-
-	if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
-		return -EFAULT;
-	}
-
-	frame->bytes_read += count;
-	PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
-		       (unsigned long)count, frame->bytes_read);
-
-	// For now, forget the frame if it has not been read in one shot.
-/* 	if (frame->bytes_read >= frame->scanlength) {// All data has been read */
-		frame->bytes_read = 0;
-
-		/* Mark it as available to be used again. */
-		usbvision->frame[frmx].grabstate = FrameState_Unused;
-/* 	} */
-
-	return count;
-}
-
-static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	unsigned long size = vma->vm_end - vma->vm_start,
-		start = vma->vm_start;
-	void *pos;
-	u32 i;
-
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-
-	if (!USBVISION_IS_OPERATIONAL(usbvision))
-		return -EFAULT;
-
-	if (!(vma->vm_flags & VM_WRITE) ||
-	    size != PAGE_ALIGN(usbvision->max_frame_size)) {
-		return -EINVAL;
-	}
-
-	for (i = 0; i < USBVISION_NUMFRAMES; i++) {
-		if (((usbvision->max_frame_size*i) >> PAGE_SHIFT) == vma->vm_pgoff)
-			break;
-	}
-	if (i == USBVISION_NUMFRAMES) {
-		PDEBUG(DBG_FUNC, "mmap: user supplied mapping address is out of range");
-		return -EINVAL;
-	}
-
-	/* VM_IO is eventually going to replace PageReserved altogether */
-	vma->vm_flags |= VM_IO;
-	vma->vm_flags |= VM_RESERVED;	/* avoid to swap out this VMA */
-
-	pos = usbvision->frame[i].data;
-	while (size > 0) {
-
-		if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
-			PDEBUG(DBG_FUNC, "mmap: vm_insert_page failed");
-			return -EAGAIN;
-		}
-		start += PAGE_SIZE;
-		pos += PAGE_SIZE;
-		size -= PAGE_SIZE;
-	}
-
-	return 0;
-}
-
-
-/*
- * Here comes the stuff for radio on usbvision based devices
- *
- */
-static int usbvision_radio_open(struct inode *inode, struct file *file)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-	struct v4l2_frequency freq;
-	int errCode = 0;
-
-	PDEBUG(DBG_RIO, "%s:", __FUNCTION__);
-
-	down(&usbvision->lock);
-
-	if (usbvision->user) {
-		err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
-		errCode = -EBUSY;
-	}
-	else {
-		if(PowerOnAtOpen) {
-			if (timer_pending(&usbvision->powerOffTimer)) {
-				del_timer(&usbvision->powerOffTimer);
-			}
-			if (usbvision->power == 0) {
-				usbvision_power_on(usbvision);
-				usbvision_init_i2c(usbvision);
-			}
-		}
-
-		// If so far no errors then we shall start the radio
-		usbvision->radio = 1;
-		call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
-		freq.frequency = 1517; //SWR3 @ 94.8MHz
-		call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
-		usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
-		usbvision->user++;
-	}
-
-	if (errCode) {
-		if (PowerOnAtOpen) {
-			usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
-			usbvision_power_off(usbvision);
-			usbvision->initialized = 0;
-		}
-	}
-	up(&usbvision->lock);
-	return errCode;
-}
-
-
-static int usbvision_radio_close(struct inode *inode, struct file *file)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-	int errCode = 0;
-
-	PDEBUG(DBG_RIO, "");
-
-	down(&usbvision->lock);
-
-	usbvision_audio_off(usbvision);
-	usbvision->radio=0;
-	usbvision->user--;
-
-	if (PowerOnAtOpen) {
-		mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
-		usbvision->initialized = 0;
-	}
-
-	up(&usbvision->lock);
-
-	if (usbvision->remove_pending) {
-		info("%s: Final disconnect", __FUNCTION__);
-		usbvision_release(usbvision);
-	}
-
-
-	PDEBUG(DBG_RIO, "success");
-
-	return errCode;
-}
-
-static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
-				 unsigned int cmd, void *arg)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-
-	if (!USBVISION_IS_OPERATIONAL(usbvision))
-		return -EIO;
-
-	switch (cmd) {
-		case VIDIOC_QUERYCAP:
-		{
-			struct v4l2_capability *vc=arg;
-
-			memset(vc, 0, sizeof(*vc));
-			strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
-			strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
-				sizeof(vc->card));
-			strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
-				sizeof(vc->bus_info));
-			vc->version = USBVISION_DRIVER_VERSION;
-			vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
-			PDEBUG(DBG_RIO, "VIDIOC_QUERYCAP");
-			return 0;
-		}
-		case VIDIOC_QUERYCTRL:
-		{
-			struct v4l2_queryctrl *ctrl = arg;
-			int id=ctrl->id;
-
-			memset(ctrl,0,sizeof(*ctrl));
-			ctrl->id=id;
-
-			call_i2c_clients(usbvision, cmd, arg);
-			PDEBUG(DBG_RIO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
-
-			if (ctrl->type)
-				return 0;
-			else
-				return -EINVAL;
-
-		}
-		case VIDIOC_G_CTRL:
-		{
-			struct v4l2_control *ctrl = arg;
-
-			call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
-			PDEBUG(DBG_RIO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
-			return 0;
-		}
-		case VIDIOC_S_CTRL:
-		{
-			struct v4l2_control *ctrl = arg;
-
-			call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
-			PDEBUG(DBG_RIO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
-			return 0;
-		}
-		case VIDIOC_G_TUNER:
-		{
-			struct v4l2_tuner *t = arg;
-
-			if (t->index > 0)
-				return -EINVAL;
-
-			memset(t,0,sizeof(*t));
-			strcpy(t->name, "Radio");
-			t->type = V4L2_TUNER_RADIO;
-
-			/* Let clients fill in the remainder of this struct */
-			call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
-			PDEBUG(DBG_RIO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
-			return 0;
-		}
-		case VIDIOC_S_TUNER:
-		{
-			struct v4l2_tuner *vt = arg;
-
-			// Only no or one tuner for now
-			if (!usbvision->have_tuner || vt->index)
-				return -EINVAL;
-			/* let clients handle this */
-			call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
-
-			PDEBUG(DBG_RIO, "VIDIOC_S_TUNER");
-			return 0;
-		}
-		case VIDIOC_G_AUDIO:
-		{
-			struct v4l2_audio *a = arg;
-
-			memset(a,0,sizeof(*a));
-			strcpy(a->name,"Radio");
-			PDEBUG(DBG_RIO, "VIDIOC_G_AUDIO");
-			return 0;
-		}
-		case VIDIOC_S_AUDIO:
-		case VIDIOC_S_INPUT:
-		case VIDIOC_S_STD:
-		return 0;
-
-		case VIDIOC_G_FREQUENCY:
-		{
-			struct v4l2_frequency *f = arg;
-
-			memset(f,0,sizeof(*f));
-
-			f->type = V4L2_TUNER_RADIO;
-			f->frequency = usbvision->freq;
-			call_i2c_clients(usbvision, cmd, f);
-			PDEBUG(DBG_RIO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
-
-			return 0;
-		}
-		case VIDIOC_S_FREQUENCY:
-		{
-			struct v4l2_frequency *f = arg;
-
-			if (f->tuner != 0)
-				return -EINVAL;
-			usbvision->freq = f->frequency;
-			call_i2c_clients(usbvision, cmd, f);
-			PDEBUG(DBG_RIO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
-
-			return 0;
-		}
-		default:
-		{
-			PDEBUG(DBG_RIO, "%s: Unknown command %x", __FUNCTION__, cmd);
-			return -ENOIOCTLCMD;
-		}
-	}
-	return 0;
-}
-
-
-static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
-		       unsigned int cmd, unsigned long arg)
-{
-	return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
-}
-
-
-/*
- * Here comes the stuff for vbi on usbvision based devices
- *
- */
-static int usbvision_vbi_open(struct inode *inode, struct file *file)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-	unsigned long freq;
-	int errCode = 0;
-
-	PDEBUG(DBG_RIO, "%s:", __FUNCTION__);
-
-	down(&usbvision->lock);
-
-	if (usbvision->user) {
-		err("%s: Someone tried to open an already opened USBVision VBI!", __FUNCTION__);
-		errCode = -EBUSY;
-	}
-	else {
-		if(PowerOnAtOpen) {
-			if (timer_pending(&usbvision->powerOffTimer)) {
-				del_timer(&usbvision->powerOffTimer);
-			}
-			if (usbvision->power == 0) {
-				usbvision_power_on(usbvision);
-				usbvision_init_i2c(usbvision);
-			}
-		}
-
-		// If so far no errors then we shall start the vbi device
-		//usbvision->vbi = 1;
-		call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
-		freq = 1517; //SWR3 @ 94.8MHz
-		call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
-		usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
-		usbvision->user++;
-	}
-
-	if (errCode) {
-		if (PowerOnAtOpen) {
-			usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
-			usbvision_power_off(usbvision);
-			usbvision->initialized = 0;
-		}
-	}
-	up(&usbvision->lock);
-	return errCode;
-}
-
-static int usbvision_vbi_close(struct inode *inode, struct file *file)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-	int errCode = 0;
-
-	PDEBUG(DBG_RIO, "");
-
-	down(&usbvision->lock);
-
-	usbvision_audio_off(usbvision);
-	usbvision->vbi=0;
-	usbvision->user--;
-
-	if (PowerOnAtOpen) {
-		mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
-		usbvision->initialized = 0;
-	}
-
-	up(&usbvision->lock);
-
-	if (usbvision->remove_pending) {
-		info("%s: Final disconnect", __FUNCTION__);
-		usbvision_release(usbvision);
-	}
-
-
-	PDEBUG(DBG_RIO, "success");
-
-	return errCode;
-}
-
-static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
-				 unsigned int cmd, void *arg)
-{
-	struct video_device *dev = video_devdata(file);
-	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
-
-	if (!USBVISION_IS_OPERATIONAL(usbvision))
-		return -EIO;
-
-	switch (cmd) {
-		case VIDIOC_QUERYCAP:
-		{
-			struct v4l2_capability *vc=arg;
-			memset(vc, 0, sizeof(struct v4l2_capability));
-			strcpy(vc->driver,"usbvision vbi");
-			strcpy(vc->card,usbvision->vcap.card);
-			strcpy(vc->bus_info,"usb");
-			vc->version = USBVISION_DRIVER_VERSION; 	    /* version */
-			vc->capabilities = V4L2_CAP_VBI_CAPTURE; 	    /* capabilities */
-			PDEBUG(DBG_RIO, "%s: VIDIOC_QUERYCAP", __FUNCTION__);
-			return 0;
-		}
-		case VIDIOCGTUNER:
-		{
-			struct video_tuner *vt = arg;
-
-			if((vt->tuner) || (usbvision->channel)) {	/* Only tuner 0 */
-				return -EINVAL;
-			}
-			strcpy(vt->name, "vbi");
-			// japan:          76.0 MHz -  89.9 MHz
-			// western europe: 87.5 MHz - 108.0 MHz
-			// russia:         65.0 MHz - 108.0 MHz
-			vt->rangelow=(int)(65*16);
-			vt->rangehigh=(int)(108*16);
-			vt->flags= 0;
-			vt->mode = 0;
-			call_i2c_clients(usbvision,cmd,vt);
-			PDEBUG(DBG_RIO, "%s: VIDIOCGTUNER signal=%d", __FUNCTION__, vt->signal);
-			return 0;
-		}
-		case VIDIOCSTUNER:
-		{
-			struct video_tuner *vt = arg;
-
-			// Only channel 0 has a tuner
-			if((vt->tuner) || (usbvision->channel)) {
-				return -EINVAL;
-			}
-			PDEBUG(DBG_RIO, "%s: VIDIOCSTUNER", __FUNCTION__);
-			return 0;
-		}
-		case VIDIOCGAUDIO:
-		{
-			struct video_audio *va = arg;
-			memset(va,0, sizeof(struct video_audio));
-			call_i2c_clients(usbvision, cmd, va);
-			va->flags|=VIDEO_AUDIO_MUTABLE;
-			va->volume=1;
-			va->step=1;
-			strcpy(va->name, "vbi");
-			PDEBUG(DBG_RIO, "%s: VIDIOCGAUDIO", __FUNCTION__);
-			return 0;
-		}
-		case VIDIOCSAUDIO:
-		{
-			struct video_audio *va = arg;
-			if(va->audio) {
-				return -EINVAL;
-			}
-
-			if(va->flags & VIDEO_AUDIO_MUTE) {
-				if (usbvision_audio_mute(usbvision)) {
-					return -EFAULT;
-				}
-			}
-			else {
-				if (usbvision_audio_on(usbvision)) {
-					return -EFAULT;
-				}
-			}
-			PDEBUG(DBG_RIO, "%s: VIDIOCSAUDIO flags=0x%x)", __FUNCTION__, va->flags);
-			return 0;
-		}
-		case VIDIOCGFREQ:
-		{
-			unsigned long *freq = arg;
-
-			*freq = usbvision->freq;
-			PDEBUG(DBG_RIO, "%s: VIDIOCGFREQ freq = %ld00 kHz", __FUNCTION__, (*freq * 10)>>4);
-			return 0;
-		}
-		case VIDIOCSFREQ:
-		{
-			unsigned long *freq = arg;
-
-			usbvision->freq = *freq;
-			call_i2c_clients(usbvision, cmd, freq);
-			PDEBUG(DBG_RIO, "%s: VIDIOCSFREQ freq = %ld00 kHz", __FUNCTION__, (*freq * 10)>>4);
-			return 0;
-		}
-		default:
-		{
-			PDEBUG(DBG_RIO, "%s: Unknown command %d", __FUNCTION__, cmd);
-			return -ENOIOCTLCMD;
-		}
-	}
-	return 0;
-}
-
-static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
-		       unsigned int cmd, unsigned long arg)
-{
-	return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
-}
-
-
-
-static void usbvision_configure_video(struct usb_usbvision *usbvision)
-{
-	int model,i;
-
-	if (usbvision == NULL)
-		return;
-
-	model = usbvision->DevModel;
-	usbvision->depth = 24;
-	usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
-
-	if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
-		usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
-	} else {
-		usbvision->Vin_Reg2_Preset = 0;
-	}
-
-	memset(&usbvision->vcap, 0, sizeof(usbvision->vcap));
-	strcpy(usbvision->vcap.driver, "USBVision");
-	strlcpy(usbvision->vcap.bus_info, usbvision->dev->dev.bus_id,
-		sizeof(usbvision->vcap.bus_info));
-	usbvision->vcap.capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
-		(dga ? (V4L2_FBUF_CAP_LIST_CLIPPING | V4L2_CAP_VIDEO_OVERLAY) : 0) |
-		(usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
-	usbvision->vcap.version = USBVISION_DRIVER_VERSION; 	    /* version */
-
-	for (i = 0; i < TVNORMS; i++)
-		if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
-			break;
-	if (i == TVNORMS)
-		i = 0;
-	usbvision->tvnorm = &tvnorms[i];        /* set default norm */
-
-	usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
-	usbvision->ctl_input = 0;
-
-	/* This should be here to make i2c clients to be able to register */
-	usbvision_audio_off(usbvision);	//first switch off audio
-	if (!PowerOnAtOpen) {
-		usbvision_power_on(usbvision);	//and then power up the noisy tuner
-		usbvision_init_i2c(usbvision);
-	}
-}
-
-//
-// Video registration stuff
-//
-
-// Video template
-static struct file_operations usbvision_fops = {
-  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
-	.owner             = THIS_MODULE,
-  #endif
-	.open		= usbvision_v4l2_open,
-	.release	= usbvision_v4l2_close,
-	.read		= usbvision_v4l2_read,
-	.mmap		= usbvision_v4l2_mmap,
-	.ioctl		= usbvision_v4l2_ioctl,
-	.llseek		= no_llseek,
-};
-static struct video_device usbvision_video_template = {
-  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
-	.owner             = THIS_MODULE,
-  #endif
-	.type		= VID_TYPE_TUNER | VID_TYPE_CAPTURE,
-	.hardware	= VID_HARDWARE_USBVISION,
-	.fops		= &usbvision_fops,
-  #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-	.name           = "usbvision-video",
-	.release	= video_device_release,
-  #endif
-	.minor		= -1,
-};
-
-
-// Radio template
-static struct file_operations usbvision_radio_fops = {
-  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
-	.owner             = THIS_MODULE,
-  #endif
-	.open		= usbvision_radio_open,
-	.release	= usbvision_radio_close,
-	.ioctl		= usbvision_radio_ioctl,
-	.llseek		= no_llseek,
-};
-
-static struct video_device usbvision_radio_template=
-{
-  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
-	.owner             = THIS_MODULE,
-  #endif
-	.type		= VID_TYPE_TUNER,
-	.hardware	= VID_HARDWARE_USBVISION,
-	.fops		= &usbvision_radio_fops,
-  #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-	.release	= video_device_release,
-	.name           = "usbvision-radio",
-  #endif
-	.minor		= -1,
-};
-
-
-// vbi template
-static struct file_operations usbvision_vbi_fops = {
-  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
-	.owner             = THIS_MODULE,
-  #endif
-	.open		= usbvision_vbi_open,
-	.release	= usbvision_vbi_close,
-	.ioctl		= usbvision_vbi_ioctl,
-	.llseek		= no_llseek,
-};
-
-static struct video_device usbvision_vbi_template=
-{
-  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
-	.owner             = THIS_MODULE,
-  #endif
-	.type		= VID_TYPE_TUNER,
-	.hardware	= VID_HARDWARE_USBVISION,
-	.fops		= &usbvision_vbi_fops,
-  #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-	.release	= video_device_release,
-	.name           = "usbvision-vbi",
-  #endif
-	.minor		= -1,
-};
-
-
-static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
-					struct video_device *vdev_template,
-					char *name)
-{
-	struct usb_device *usb_dev = usbvision->dev;
-	struct video_device *vdev;
-
-	if (usb_dev == NULL) {
-		err("%s: usbvision->dev is not set", __FUNCTION__);
-		return NULL;
-	}
-
-	vdev = video_device_alloc();
-	if (NULL == vdev) {
-		return NULL;
-	}
-	*vdev = *vdev_template;
-//	vdev->minor   = -1;
-	vdev->dev     = &usb_dev->dev;
-	snprintf(vdev->name, sizeof(vdev->name), "%s", name);
-	video_set_drvdata(vdev, usbvision);
-	return vdev;
-}
-
-// unregister video4linux devices
-static void usbvision_unregister_video(struct usb_usbvision *usbvision)
-{
-	// vbi Device:
-	if (usbvision->vbi) {
-		PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
-		if (usbvision->vbi->minor != -1) {
-			video_unregister_device(usbvision->vbi);
-		}
-		else {
-			video_device_release(usbvision->vbi);
-		}
-		usbvision->vbi = NULL;
-	}
-
-	// Radio Device:
-	if (usbvision->rdev) {
-		PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
-		if (usbvision->rdev->minor != -1) {
-			video_unregister_device(usbvision->rdev);
-		}
-		else {
-			video_device_release(usbvision->rdev);
-		}
-		usbvision->rdev = NULL;
-	}
-
-	// Video Device:
-	if (usbvision->vdev) {
-		PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
-		if (usbvision->vdev->minor != -1) {
-			video_unregister_device(usbvision->vdev);
-		}
-		else {
-			video_device_release(usbvision->vdev);
-		}
-		usbvision->vdev = NULL;
-	}
-}
-
-// register video4linux devices
-static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
-{
-	// Video Device:
-	usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
-	if (usbvision->vdev == NULL) {
-		goto err_exit;
-	}
-	if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
-		goto err_exit;
-	}
-	info("USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]", usbvision->nr,usbvision->vdev->minor & 0x1f);
-
-	// Radio Device:
-	if (usbvision_device_data[usbvision->DevModel].Radio) {
-		// usbvision has radio
-		usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
-		if (usbvision->rdev == NULL) {
-			goto err_exit;
-		}
-		if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
-			goto err_exit;
-		}
-		info("USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]", usbvision->nr, usbvision->rdev->minor & 0x1f);
-	}
-	// vbi Device:
-	if (usbvision_device_data[usbvision->DevModel].vbi) {
-		usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
-		if (usbvision->vdev == NULL) {
-			goto err_exit;
-		}
-		if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
-			goto err_exit;
-		}
-		info("USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)", usbvision->nr,usbvision->vbi->minor & 0x1f);
-	}
-	// all done
-	return 0;
-
- err_exit:
-	err("USBVision[%d]: video_register_device() failed", usbvision->nr);
-	usbvision_unregister_video(usbvision);
-	return -1;
-}
-
-/*
- * usbvision_alloc()
- *
- * This code allocates the struct usb_usbvision. It is filled with default values.
- *
- * Returns NULL on error, a pointer to usb_usbvision else.
- *
- */
-static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
-{
-	struct usb_usbvision *usbvision;
-
-	if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
-		goto err_exit;
-	}
-
-	usbvision->dev = dev;
-
-	init_MUTEX(&usbvision->lock);	/* to 1 == available */
-
-	// prepare control urb for control messages during interrupts
-	usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
-	if (usbvision->ctrlUrb == NULL) {
-		goto err_exit;
-	}
-	init_waitqueue_head(&usbvision->ctrlUrb_wq);
-	init_MUTEX(&usbvision->ctrlUrbLock);	/* to 1 == available */
-
-	init_timer(&usbvision->powerOffTimer);
-	usbvision->powerOffTimer.data = (long) usbvision;
-	usbvision->powerOffTimer.function = usbvision_powerOffTimer;
-
-	return usbvision;
-
-err_exit:
-	if (usbvision && usbvision->ctrlUrb) {
-		usb_free_urb(usbvision->ctrlUrb);
-	}
-	if (usbvision) {
-		kfree(usbvision);
-	}
-	return NULL;
-}
-
-/*
- * usbvision_release()
- *
- * This code does final release of struct usb_usbvision. This happens
- * after the device is disconnected -and- all clients closed their files.
- *
- */
-static void usbvision_release(struct usb_usbvision *usbvision)
-{
-	PDEBUG(DBG_PROBE, "");
-
-	down(&usbvision->lock);
-
-	if (timer_pending(&usbvision->powerOffTimer)) {
-		del_timer(&usbvision->powerOffTimer);
-	}
-
-	usbvision->usbvision_used = 0;
-	usbvision->initialized = 0;
-
-	up(&usbvision->lock);
-
-	usbvision_remove_sysfs(usbvision->vdev);
-	usbvision_unregister_video(usbvision);
-	if(dga) {
-		if (usbvision->overlay_base) {
-			iounmap(usbvision->overlay_base);
-		}
-	}
-
-	if (usbvision->ctrlUrb) {
-		usb_free_urb(usbvision->ctrlUrb);
-	}
-
-	kfree(usbvision);
-
-	PDEBUG(DBG_PROBE, "success");
-}
-
-
-/*
- * usbvision_probe()
- *
- * This procedure queries device descriptor and accepts the interface
- * if it looks like USBVISION video device
- *
- */
-static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
-{
-	struct usb_device *dev = interface_to_usbdev(intf);
-	__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
-	const struct usb_host_interface *interface;
-	struct usb_usbvision *usbvision = NULL;
-	const struct usb_endpoint_descriptor *endpoint;
-	int model;
-
-	PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
-					dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
-	/* Is it an USBVISION video dev? */
-	model = 0;
-	for(model = 0; usbvision_device_data[model].idVendor; model++) {
-		if (le16_to_cpu(dev->descriptor.idVendor) != usbvision_device_data[model].idVendor) {
-			continue;
-		}
-		if (le16_to_cpu(dev->descriptor.idProduct) != usbvision_device_data[model].idProduct) {
-			continue;
-		}
-
-		info("%s: %s found", __FUNCTION__, usbvision_device_data[model].ModelString);
-		break;
-	}
-
-	if (usbvision_device_data[model].idVendor == 0) {
-		return -ENODEV; //no matching device
-	}
-	if (usbvision_device_data[model].Interface >= 0) {
-		interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
-	}
-	else {
-		interface = &dev->actconfig->interface[ifnum]->altsetting[0];
-	}
-	endpoint = &interface->endpoint[1].desc;
-	if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
-		err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
-		err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
-		return -ENODEV;
-	}
-	if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
-		err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
-		return -ENODEV;
-	}
-
-	usb_get_dev(dev);
-
-	if ((usbvision = usbvision_alloc(dev)) == NULL) {
-		err("%s: couldn't allocate USBVision struct", __FUNCTION__);
-		return -ENOMEM;
-	}
-	if (dev->descriptor.bNumConfigurations > 1) {
-		usbvision->bridgeType = BRIDGE_NT1004;
-	}
-	else if (usbvision_device_data[model].ModelString == "Dazzle Fusion Model DVC-90 Rev 1 (SECAM)") {
-		usbvision->bridgeType = BRIDGE_NT1005;
-	}
-	else {
-		usbvision->bridgeType = BRIDGE_NT1003;
-	}
-	PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
-
-	down(&usbvision->lock);
-
-	usbvision->nr = usbvision_nr++;
-
-	usbvision->have_tuner = usbvision_device_data[model].Tuner;
-	if (usbvision->have_tuner) {
-		usbvision->tuner_type = usbvision_device_data[model].TunerType;
-	}
-
-	usbvision->tuner_addr = ADDR_UNSET;
-
-	usbvision->DevModel = model;
-	usbvision->remove_pending = 0;
-	usbvision->last_error = 0;
-	usbvision->iface = ifnum;
-	usbvision->ifaceAltInactive = 0;
-	usbvision->ifaceAltActive = 1;
-	usbvision->video_endp = endpoint->bEndpointAddress;
-	usbvision->isocPacketSize = 0;
-	usbvision->usb_bandwidth = 0;
-	usbvision->user = 0;
-	usbvision->streaming = Stream_Off;
-	usbvision_register_video(usbvision);
-	usbvision_configure_video(usbvision);
-	up(&usbvision->lock);
-
-
-	usb_set_intfdata (intf, usbvision);
-	usbvision_create_sysfs(usbvision->vdev);
-
-	PDEBUG(DBG_PROBE, "success");
-	return 0;
-}
-
-
-/*
- * usbvision_disconnect()
- *
- * This procedure stops all driver activity, deallocates interface-private
- * structure (pointed by 'ptr') and after that driver should be removable
- * with no ill consequences.
- *
- */
-static void __devexit usbvision_disconnect(struct usb_interface *intf)
-{
-	struct usb_usbvision *usbvision = usb_get_intfdata(intf);
-
-	PDEBUG(DBG_PROBE, "");
-
-	if (usbvision == NULL) {
-		err("%s: usb_get_intfdata() failed", __FUNCTION__);
-		return;
-	}
-	usb_set_intfdata (intf, NULL);
-
-	down(&usbvision->lock);
-
-	// At this time we ask to cancel outstanding URBs
-	usbvision_stop_isoc(usbvision);
-
-	if (usbvision->power) {
-		usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
-		usbvision_power_off(usbvision);
-	}
-	usbvision->remove_pending = 1;	// Now all ISO data will be ignored
-
-	usb_put_dev(usbvision->dev);
-	usbvision->dev = NULL;	// USB device is no more
-
-	up(&usbvision->lock);
-
-	if (usbvision->user) {
-		info("%s: In use, disconnect pending", __FUNCTION__);
-		wake_up_interruptible(&usbvision->wait_frame);
-		wake_up_interruptible(&usbvision->wait_stream);
-	}
-	else {
-		usbvision_release(usbvision);
-	}
-
-	PDEBUG(DBG_PROBE, "success");
-
-}
-
-static struct usb_driver usbvision_driver = {
-	.name		= "usbvision",
-	.id_table	= usbvision_table,
-	.probe		= usbvision_probe,
-	.disconnect	= usbvision_disconnect
-};
-
-/*
- * customdevice_process()
- *
- * This procedure preprocesses CustomDevice parameter if any
- *
- */
-void customdevice_process(void)
-{
-	usbvision_device_data[0]=usbvision_device_data[1];
-	usbvision_table[0]=usbvision_table[1];
-
-	if(CustomDevice)
-	{
-		char *parse=CustomDevice;
-
-		PDEBUG(DBG_PROBE, "CustomDevide=%s", CustomDevice);
-
-		/*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
-		usbvision_device_data[0].idVendor;
-		usbvision_device_data[0].idProduct;
-		usbvision_device_data[0].Interface;
-		usbvision_device_data[0].Codec;
-		usbvision_device_data[0].VideoChannels;
-		usbvision_device_data[0].VideoNorm;
-		usbvision_device_data[0].AudioChannels;
-		usbvision_device_data[0].Radio;
-		usbvision_device_data[0].Tuner;
-		usbvision_device_data[0].TunerType;
-		usbvision_device_data[0].Vin_Reg1;
-		usbvision_device_data[0].Vin_Reg2;
-		usbvision_device_data[0].X_Offset;
-		usbvision_device_data[0].Y_Offset;
-		usbvision_device_data[0].Dvi_yuv;
-		usbvision_device_data[0].ModelString;
-		*/
-
-		rmspace(parse);
-		usbvision_device_data[0].ModelString="USBVISION Custom Device";
-
-		parse+=2;
-		sscanf(parse,"%x",&usbvision_device_data[0].idVendor);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_device_data[0].idVendor);
-		parse+=2;
-		sscanf(parse,"%x",&usbvision_device_data[0].idProduct);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_device_data[0].idProduct);
-		sscanf(parse,"%d",&usbvision_device_data[0].Interface);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
-		sscanf(parse,"%d",&usbvision_device_data[0].Codec);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
-		sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
-
-		switch(*parse)
-		{
-			case 'P':
-				PDEBUG(DBG_PROBE, "VideoNorm=PAL");
-				usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
-				break;
-
-			case 'S':
-				PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
-				usbvision_device_data[0].VideoNorm=VIDEO_MODE_SECAM;
-				break;
-
-			case 'N':
-				PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
-				usbvision_device_data[0].VideoNorm=VIDEO_MODE_NTSC;
-				break;
-
-			default:
-				PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
-				usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
-				break;
-		}
-		goto2next(parse);
-
-		sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
-		sscanf(parse,"%d",&usbvision_device_data[0].Radio);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
-		sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
-		sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
-		sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
-		sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
-		sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
-		sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
-		goto2next(parse);
-		PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
-		sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
-		PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
-
-		//add to usbvision_table also
-		usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
-		usbvision_table[0].idVendor=usbvision_device_data[0].idVendor;
-		usbvision_table[0].idProduct=usbvision_device_data[0].idProduct;
-
-	}
-}
-
-
-
-/*
- * usbvision_init()
- *
- * This code is run to initialize the driver.
- *
- */
-static int __init usbvision_init(void)
-{
-	int errCode;
-
-	PDEBUG(DBG_PROBE, "");
-
-	PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled");
-	PDEBUG(DBG_IO,  "IO      debugging is enabled");
-	PDEBUG(DBG_RIO,  "RIO     debugging is enabled");
-	PDEBUG(DBG_HEADER, "HEADER  debugging is enabled");
-	PDEBUG(DBG_PROBE, "PROBE   debugging is enabled");
-	PDEBUG(DBG_IRQ,  "IRQ     debugging is enabled");
-	PDEBUG(DBG_ISOC, "ISOC    debugging is enabled");
-	PDEBUG(DBG_PARSE, "PARSE   debugging is enabled");
-	PDEBUG(DBG_SCRATCH, "SCRATCH debugging is enabled");
-	PDEBUG(DBG_FUNC, "FUNC    debugging is enabled");
-	PDEBUG(DBG_I2C,  "I2C     debugging is enabled");
-
-	/* disable planar mode support unless compression enabled */
-	if (isocMode != ISOC_MODE_COMPRESS ) {
-		// FIXME : not the right way to set supported flag
-		usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
-		usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
-	}
-
-	customdevice_process();
-
-	errCode = usb_register(&usbvision_driver);
-
-	if (errCode == 0) {
-		info(DRIVER_DESC " : " DRIVER_VERSION);
-		PDEBUG(DBG_PROBE, "success");
-	}
-	return errCode;
-}
-
-static void __exit usbvision_exit(void)
-{
- PDEBUG(DBG_PROBE, "");
-
- usb_deregister(&usbvision_driver);
- PDEBUG(DBG_PROBE, "success");
-}
-
-module_init(usbvision_init);
-module_exit(usbvision_exit);
-
 /*
  * Overrides for Emacs so that we follow Linus's tabbing style.
  * ---------------------------------------------------------------------------
diff --git a/drivers/media/video/usbvision/usbvision-i2c.c b/drivers/media/video/usbvision/usbvision-i2c.c
index 48afcd2aca3f..2de74e48cbe5 100644
--- a/drivers/media/video/usbvision/usbvision-i2c.c
+++ b/drivers/media/video/usbvision/usbvision-i2c.c
@@ -37,16 +37,18 @@
 #include <linux/sched.h>
 #include <linux/usb.h>
 #include <linux/i2c.h>
-#include "usbvision-i2c.h"
+#include "usbvision.h"
 
-static int debug_i2c_usb = 0;
+#define DBG_I2C		1<<0
+#define DBG_ALGO	1<<1
 
-#if defined(module_param)                               // Showing parameters under SYSFS
-module_param (debug_i2c_usb, int, 0444);			// debug_i2c_usb mode of the device driver
-#else
-MODULE_PARM(debug_i2c_usb, "i");				// debug_i2c_usb mode of the device driver
-#endif
+static int i2c_debug = 0;
+
+module_param (i2c_debug, int, 0644);			// debug_i2c_usb mode of the device driver
+MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
 
+#define PDEBUG(level, fmt, args...) \
+		if (i2c_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
 
 static inline int try_write_address(struct i2c_adapter *i2c_adap,
 				    unsigned char addr, int retries)
@@ -67,11 +69,9 @@ static inline int try_write_address(struct i2c_adapter *i2c_adap,
 			break;
 		udelay(adap->udelay);
 	}
-	if (debug_i2c_usb) {
-		if (i) {
-			info("%s: Needed %d retries for address %#2x", __FUNCTION__, i, addr);
-			info("%s: Maybe there's no device at this address", __FUNCTION__);
-		}
+	if (i) {
+		PDEBUG(DBG_ALGO,"Needed %d retries for address %#2x", i, addr);
+		PDEBUG(DBG_ALGO,"Maybe there's no device at this address");
 	}
 	return ret;
 }
@@ -94,11 +94,9 @@ static inline int try_read_address(struct i2c_adapter *i2c_adap,
 			break;
 		udelay(adap->udelay);
 	}
-	if (debug_i2c_usb) {
-		if (i) {
-			info("%s: Needed %d retries for address %#2x", __FUNCTION__, i, addr);
-			info("%s: Maybe there's no device at this address", __FUNCTION__);
-		}
+	if (i) {
+		PDEBUG(DBG_ALGO,"Needed %d retries for address %#2x", i, addr);
+		PDEBUG(DBG_ALGO,"Maybe there's no device at this address");
 	}
 	return ret;
 }
@@ -166,9 +164,7 @@ usb_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)
 		pmsg = &msgs[i];
 		ret = usb_find_address(i2c_adap, pmsg, i2c_adap->retries, &addr);
 		if (ret != 0) {
-			if (debug_i2c_usb) {
-				info("%s: got NAK from device, message #%d\n", __FUNCTION__, i);
-			}
+			PDEBUG(DBG_ALGO,"got NAK from device, message #%d", i);
 			return (ret < 0) ? ret : -EREMOTEIO;
 		}
 
@@ -215,6 +211,9 @@ static struct i2c_algorithm i2c_usb_algo = {
  */
 int usbvision_i2c_usb_add_bus(struct i2c_adapter *adap)
 {
+	PDEBUG(DBG_I2C, "I2C   debugging is enabled [i2c]");
+	PDEBUG(DBG_ALGO, "ALGO   debugging is enabled [i2c]");
+
 	/* register new adapter to i2c module... */
 
 	adap->algo = &i2c_usb_algo;
@@ -222,17 +221,9 @@ int usbvision_i2c_usb_add_bus(struct i2c_adapter *adap)
 	adap->timeout = 100;	/* default values, should       */
 	adap->retries = 3;	/* be replaced by defines       */
 
-#ifdef MODULE
-	#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 21)
-		MOD_INC_USE_COUNT;
-	#endif
-#endif
-
 	i2c_add_adapter(adap);
 
-	if (debug_i2c_usb) {
-		info("i2c bus for %s registered", adap->name);
-	}
+	PDEBUG(DBG_ALGO,"i2c bus for %s registered", adap->name);
 
 	return 0;
 }
@@ -243,17 +234,338 @@ int usbvision_i2c_usb_del_bus(struct i2c_adapter *adap)
 
 	i2c_del_adapter(adap);
 
-	if (debug_i2c_usb) {
-		info("i2c bus for %s unregistered", adap->name);
+	PDEBUG(DBG_ALGO,"i2c bus for %s unregistered", adap->name);
+
+	return 0;
+}
+
+
+/* ----------------------------------------------------------------------- */
+/* usbvision specific I2C functions                                        */
+/* ----------------------------------------------------------------------- */
+static struct i2c_adapter i2c_adap_template;
+static struct i2c_algo_usb_data i2c_algo_template;
+static struct i2c_client i2c_client_template;
+
+int usbvision_init_i2c(struct usb_usbvision *usbvision)
+{
+	memcpy(&usbvision->i2c_adap, &i2c_adap_template,
+	       sizeof(struct i2c_adapter));
+	memcpy(&usbvision->i2c_algo, &i2c_algo_template,
+	       sizeof(struct i2c_algo_usb_data));
+	memcpy(&usbvision->i2c_client, &i2c_client_template,
+	       sizeof(struct i2c_client));
+
+	sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),
+		" #%d", usbvision->vdev->minor & 0x1f);
+	PDEBUG(DBG_I2C,"Adaptername: %s", usbvision->i2c_adap.name);
+
+	i2c_set_adapdata(&usbvision->i2c_adap, usbvision);
+	i2c_set_clientdata(&usbvision->i2c_client, usbvision);
+	i2c_set_algo_usb_data(&usbvision->i2c_algo, usbvision);
+
+	usbvision->i2c_adap.algo_data = &usbvision->i2c_algo;
+	usbvision->i2c_client.adapter = &usbvision->i2c_adap;
+
+	if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {
+		printk(KERN_ERR "usbvision_init_i2c: can't write reg\n");
+		return -EBUSY;
+	}
+
+#ifdef CONFIG_MODULES
+	/* Request the load of the i2c modules we need */
+	switch (usbvision_device_data[usbvision->DevModel].Codec) {
+	case CODEC_SAA7113:
+		request_module("saa7115");
+		break;
+	case CODEC_SAA7111:
+		request_module("saa7115");
+		break;
+	}
+	if (usbvision_device_data[usbvision->DevModel].Tuner == 1) {
+		request_module("tuner");
 	}
-#ifdef MODULE
-	#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 21)
-		MOD_DEC_USE_COUNT;
-	#endif
 #endif
 
+	return usbvision_i2c_usb_add_bus(&usbvision->i2c_adap);
+}
+
+void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,
+		      void *arg)
+{
+	BUG_ON(NULL == usbvision->i2c_adap.algo_data);
+	i2c_clients_command(&usbvision->i2c_adap, cmd, arg);
+}
+
+static int attach_inform(struct i2c_client *client)
+{
+	struct usb_usbvision *usbvision;
+
+	usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
+
+	switch (client->addr << 1) {
+		case 0x43:
+		case 0x4b:
+		{
+			struct tuner_setup tun_setup;
+
+			tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
+			tun_setup.type = TUNER_TDA9887;
+			tun_setup.addr = client->addr;
+
+			call_i2c_clients(usbvision, TUNER_SET_TYPE_ADDR, &tun_setup);
+
+			break;
+		}
+		case 0x42:
+			PDEBUG(DBG_I2C,"attach_inform: saa7114 detected.");
+			break;
+		case 0x4a:
+			PDEBUG(DBG_I2C,"attach_inform: saa7113 detected.");
+			break;
+		case 0xa0:
+			PDEBUG(DBG_I2C,"attach_inform: eeprom detected.");
+			break;
+
+		default:
+			{
+				struct tuner_setup tun_setup;
+
+				PDEBUG(DBG_I2C,"attach inform: detected I2C address %x", client->addr << 1);
+				usbvision->tuner_addr = client->addr;
+
+				if ((usbvision->have_tuner) && (usbvision->tuner_type != -1)) {
+					tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
+					tun_setup.type = usbvision->tuner_type;
+					tun_setup.addr = usbvision->tuner_addr;
+					call_i2c_clients(usbvision, TUNER_SET_TYPE_ADDR, &tun_setup);
+				}
+			}
+			break;
+	}
 	return 0;
 }
 
+static int detach_inform(struct i2c_client *client)
+{
+	struct usb_usbvision *usbvision;
+
+	#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+		usbvision = (struct usb_usbvision *)client->adapter->data;
+	#else
+		usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
+	#endif
+
+		PDEBUG(DBG_I2C,"usbvision[%d] detaches %s", usbvision->nr, client->name);
+	return 0;
+}
+
+static int
+usbvision_i2c_read_max4(struct usb_usbvision *usbvision, unsigned char addr,
+		     char *buf, short len)
+{
+	int rc, retries;
+
+	for (retries = 5;;) {
+		rc = usbvision_write_reg(usbvision, USBVISION_SER_ADRS, addr);
+		if (rc < 0)
+			return rc;
+
+		/* Initiate byte read cycle                    */
+		/* USBVISION_SER_CONT <- d0-d2 n. of bytes to r/w */
+		/*                    d3 0=Wr 1=Rd             */
+		rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
+				      (len & 0x07) | 0x18);
+		if (rc < 0)
+			return rc;
+
+		/* Test for Busy and ACK */
+		do {
+			/* USBVISION_SER_CONT -> d4 == 0 busy */
+			rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
+		} while (rc > 0 && ((rc & 0x10) != 0));	/* Retry while busy */
+		if (rc < 0)
+			return rc;
+
+		/* USBVISION_SER_CONT -> d5 == 1 Not ack */
+		if ((rc & 0x20) == 0)	/* Ack? */
+			break;
+
+		/* I2C abort */
+		rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
+		if (rc < 0)
+			return rc;
+
+		if (--retries < 0)
+			return -1;
+	}
+
+	switch (len) {
+	case 4:
+		buf[3] = usbvision_read_reg(usbvision, USBVISION_SER_DAT4);
+	case 3:
+		buf[2] = usbvision_read_reg(usbvision, USBVISION_SER_DAT3);
+	case 2:
+		buf[1] = usbvision_read_reg(usbvision, USBVISION_SER_DAT2);
+	case 1:
+		buf[0] = usbvision_read_reg(usbvision, USBVISION_SER_DAT1);
+		break;
+	default:
+		printk(KERN_ERR
+		       "usbvision_i2c_read_max4: buffer length > 4\n");
+	}
+
+	if (i2c_debug & DBG_I2C) {
+		int idx;
+		for (idx = 0; idx < len; idx++) {
+			PDEBUG(DBG_I2C,"read %x from address %x", (unsigned char)buf[idx], addr);
+		}
+	}
+	return len;
+}
+
+
+static int usbvision_i2c_write_max4(struct usb_usbvision *usbvision,
+				 unsigned char addr, const char *buf,
+				 short len)
+{
+	int rc, retries;
+	int i;
+	unsigned char value[6];
+	unsigned char ser_cont;
+
+	ser_cont = (len & 0x07) | 0x10;
+
+	value[0] = addr;
+	value[1] = ser_cont;
+	for (i = 0; i < len; i++)
+		value[i + 2] = buf[i];
+
+	for (retries = 5;;) {
+		rc = usb_control_msg(usbvision->dev,
+				     usb_sndctrlpipe(usbvision->dev, 1),
+				     USBVISION_OP_CODE,
+				     USB_DIR_OUT | USB_TYPE_VENDOR |
+				     USB_RECIP_ENDPOINT, 0,
+				     (__u16) USBVISION_SER_ADRS, value,
+				     len + 2, HZ);
+
+		if (rc < 0)
+			return rc;
+
+		rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
+				      (len & 0x07) | 0x10);
+		if (rc < 0)
+			return rc;
+
+		/* Test for Busy and ACK */
+		do {
+			rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
+		} while (rc > 0 && ((rc & 0x10) != 0));	/* Retry while busy */
+		if (rc < 0)
+			return rc;
+
+		if ((rc & 0x20) == 0)	/* Ack? */
+			break;
+
+		/* I2C abort */
+		usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
+
+		if (--retries < 0)
+			return -1;
+
+	}
+
+	if (i2c_debug & DBG_I2C) {
+		int idx;
+		for (idx = 0; idx < len; idx++) {
+			PDEBUG(DBG_I2C,"wrote %x at address %x", (unsigned char)buf[idx], addr);
+		}
+	}
+	return len;
+}
+
+static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,
+			    short len)
+{
+	char *bufPtr = buf;
+	int retval;
+	int wrcount = 0;
+	int count;
+	int maxLen = 4;
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
+
+	while (len > 0) {
+		count = (len > maxLen) ? maxLen : len;
+		retval = usbvision_i2c_write_max4(usbvision, addr, bufPtr, count);
+		if (retval > 0) {
+			len -= count;
+			bufPtr += count;
+			wrcount += count;
+		} else
+			return (retval < 0) ? retval : -EFAULT;
+	}
+	return wrcount;
+}
+
+static int usbvision_i2c_read(void *data, unsigned char addr, char *buf,
+			   short len)
+{
+	char temp[4];
+	int retval, i;
+	int rdcount = 0;
+	int count;
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
+
+	while (len > 0) {
+		count = (len > 3) ? 4 : len;
+		retval = usbvision_i2c_read_max4(usbvision, addr, temp, count);
+		if (retval > 0) {
+			for (i = 0; i < len; i++)
+				buf[rdcount + i] = temp[i];
+			len -= count;
+			rdcount += count;
+		} else
+			return (retval < 0) ? retval : -EFAULT;
+	}
+	return rdcount;
+}
+
+static struct i2c_algo_usb_data i2c_algo_template = {
+	.data		= NULL,
+	.inb		= usbvision_i2c_read,
+	.outb		= usbvision_i2c_write,
+	.udelay		= 10,
+	.mdelay		= 10,
+	.timeout	= 100,
+};
+
+static struct i2c_adapter i2c_adap_template = {
+	.owner = THIS_MODULE,
+	.name              = "usbvision",
+	.id                = I2C_HW_B_BT848, /* FIXME */
+	.algo              = NULL,
+	.algo_data         = NULL,
+	.client_register   = attach_inform,
+	.client_unregister = detach_inform,
+#if defined (I2C_ADAP_CLASS_TV_ANALOG)
+	.class             = I2C_ADAP_CLASS_TV_ANALOG,
+#elif defined (I2C_CLASS_TV_ANALOG)
+	.class		   = I2C_CLASS_TV_ANALOG,
+#endif
+};
+
+static struct i2c_client i2c_client_template = {
+	.name		= "usbvision internal",
+};
+
 EXPORT_SYMBOL(usbvision_i2c_usb_add_bus);
 EXPORT_SYMBOL(usbvision_i2c_usb_del_bus);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
diff --git a/drivers/media/video/usbvision/usbvision-i2c.h b/drivers/media/video/usbvision/usbvision-i2c.h
deleted file mode 100644
index a2df8dbdac59..000000000000
--- a/drivers/media/video/usbvision/usbvision-i2c.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/* 
- * I2C_ALGO_USB.H
- *  i2c algorithm for USB-I2C Bridges
- *
- * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
- *
- * This module is part of usbvision driver project.
- * Updates to driver completed by Dwaine P. Garden
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
-#ifndef I2C_ALGO_USB_H
-#define I2C_ALGO_USB_H 1 
-
-#include <linux/i2c.h>
-
-struct i2c_algo_usb_data {
-	void *data;		/* private data for lowlevel routines */
-	int (*inb) (void *data, unsigned char addr, char *buf, short len);
-	int (*outb) (void *data, unsigned char addr, char *buf, short len);
-
-	/* local settings */
-	int udelay;
-	int mdelay;
-	int timeout;
-};
-
-#define I2C_USB_ADAP_MAX	16
-
-int usbvision_i2c_usb_add_bus(struct i2c_adapter *);
-int usbvision_i2c_usb_del_bus(struct i2c_adapter *);
-
-static inline void *i2c_get_algo_usb_data (struct i2c_algo_usb_data *dev)
-{
-	return dev->data;
-}
-
-static inline void i2c_set_algo_usb_data (struct i2c_algo_usb_data *dev, void *data)
-{
-	dev->data = data;
-}
-
-
-#endif //I2C_ALGO_USB_H
diff --git a/drivers/media/video/usbvision/usbvision-video.c b/drivers/media/video/usbvision/usbvision-video.c
new file mode 100644
index 000000000000..7e26d8336886
--- /dev/null
+++ b/drivers/media/video/usbvision/usbvision-video.c
@@ -0,0 +1,2060 @@
+/*
+ * USB USBVISION Video device driver 0.9.9 
+ *
+ *
+ *
+ * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
+ *
+ * This module is part of usbvision driver project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Let's call the version 0.... until compression decoding is completely
+ * implemented.
+ *
+ * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
+ * It was based on USB CPiA driver written by Peter Pregler,
+ * Scott J. Bertin and Johannes Erdfelt
+ * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
+ * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
+ * Updates to driver completed by Dwaine P. Garden
+ *
+ *
+ * TODO:
+ *     - use submit_urb for all setup packets
+ *     - Fix memory settings for nt1004. It is 4 times as big as the
+ *       nt1003 memory.
+ *     - Add audio on endpoint 3 for nt1004 chip.  Seems impossible, needs a codec interface.  Which one?
+ *     - Clean up the driver.
+ *     - optimization for performance.
+ *     - Add Videotext capability (VBI).  Working on it.....
+ *     - Check audio for other devices
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/utsname.h>
+#include <linux/highmem.h>
+#include <linux/smp_lock.h>
+#include <linux/videodev.h>
+#include <linux/vmalloc.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+#include <linux/videodev2.h>
+#include <linux/video_decoder.h>
+#include <linux/i2c.h>
+
+#include <media/saa7115.h>
+#include <media/v4l2-common.h>
+#include <media/tuner.h>
+#include <media/audiochip.h>
+
+	#include <linux/moduleparam.h>
+	#include <linux/workqueue.h>
+
+#ifdef CONFIG_KMOD
+#include <linux/kmod.h>
+#endif
+
+#include "usbvision.h"
+
+#define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, Dwaine Garden <DwaineGarden@rogers.com>"
+#define DRIVER_NAME "usbvision"
+#define DRIVER_ALIAS "USBVision"
+#define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
+#define DRIVER_LICENSE "GPL"
+#define USBVISION_DRIVER_VERSION_MAJOR 0
+#define USBVISION_DRIVER_VERSION_MINOR 9
+#define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
+#define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
+#define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
+
+#define	ENABLE_HEXDUMP	0	/* Enable if you need it */
+
+
+#define USBVISION_DEBUG		/* Turn on debug messages */
+
+#ifdef USBVISION_DEBUG
+	#define PDEBUG(level, fmt, args...) \
+		if (video_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
+#else
+	#define PDEBUG(level, fmt, args...) do {} while(0)
+#endif
+
+#define DBG_IOCTL	1<<0
+#define DBG_IO		1<<1
+#define DBG_PROBE	1<<2
+#define DBG_FUNC	1<<3
+
+//String operations
+#define rmspace(str)	while(*str==' ') str++;
+#define goto2next(str)	while(*str!=' ') str++; while(*str==' ') str++;
+
+
+static int usbvision_nr = 0;			// sequential number of usbvision device
+
+static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
+	{ 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
+	{ 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
+	{ 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
+	{ 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
+	{ 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
+	{ 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
+	{ 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
+	{ 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
+};
+
+/* supported tv norms */
+static struct usbvision_tvnorm tvnorms[] = {
+	{
+		.name = "PAL",
+		.id = V4L2_STD_PAL,
+	}, {
+		.name = "NTSC",
+		.id = V4L2_STD_NTSC,
+	}, {
+		 .name = "SECAM",
+		 .id = V4L2_STD_SECAM,
+	}, {
+		.name = "PAL-M",
+		.id = V4L2_STD_PAL_M,
+	}
+};
+
+#define TVNORMS ARRAY_SIZE(tvnorms)
+
+// Function prototypes
+static void usbvision_release(struct usb_usbvision *usbvision);
+
+// Default initalization of device driver parameters
+static int isocMode = ISOC_MODE_COMPRESS;		// Set the default format for ISOC endpoint
+static int video_debug = 0;				// Set the default Debug Mode of the device driver
+static int PowerOnAtOpen = 1;				// Set the default device to power on at startup
+static int video_nr = -1;				// Sequential Number of Video Device
+static int radio_nr = -1;				// Sequential Number of Radio Device
+static int vbi_nr = -1;					// Sequential Number of VBI Device
+static char *CustomDevice=NULL;				// Set as nothing....
+
+// Grab parameters for the device driver
+
+#if defined(module_param)                               // Showing parameters under SYSFS
+module_param(isocMode, int, 0444);
+module_param(video_debug, int, 0444);
+module_param(PowerOnAtOpen, int, 0444);
+module_param(video_nr, int, 0444);
+module_param(radio_nr, int, 0444);
+module_param(vbi_nr, int, 0444);
+module_param(CustomDevice, charp, 0444);
+#else							// Old Style
+MODULE_PARAM(isocMode, "i");
+MODULE_PARM(video_debug, "i");				// Grab the Debug Mode of the device driver
+MODULE_PARM(adjustCompression, "i");			// Grab the compression to be adaptive
+MODULE_PARM(PowerOnAtOpen, "i");			// Grab the device to power on at startup
+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.
+MODULE_PARM(video_nr, "i");				// video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
+MODULE_PARM(radio_nr, "i");				// radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
+MODULE_PARM(vbi_nr, "i");				// vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
+MODULE_PARM(CustomDevice, "s");				// .... CustomDevice
+#endif
+
+MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
+MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
+MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
+MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
+MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
+MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
+MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device.  Default: null");
+
+
+// Misc stuff
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE(DRIVER_LICENSE);
+	MODULE_VERSION(USBVISION_VERSION_STRING);
+	MODULE_ALIAS(DRIVER_ALIAS);
+
+
+/****************************************************************************************/
+/* SYSFS Code - Copied from the stv680.c usb module.					*/
+/* Device information is located at /sys/class/video4linux/video0			*/
+/* Device parameters information is located at /sys/module/usbvision                    */
+/* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
+/****************************************************************************************/
+
+
+#define YES_NO(x) ((x) ? "Yes" : "No")
+
+static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
+{
+	struct video_device *vdev = to_video_device(cd);
+	return video_get_drvdata(vdev);
+}
+
+static ssize_t show_version(struct class_device *cd, char *buf)
+{
+	return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
+}
+static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
+
+static ssize_t show_model(struct class_device *class_dev, char *buf)
+{
+	struct video_device *vdev = to_video_device(class_dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
+}
+static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
+
+static ssize_t show_hue(struct class_device *class_dev, char *buf)
+{
+	struct video_device *vdev = to_video_device(class_dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	struct v4l2_control ctrl;
+	ctrl.id = V4L2_CID_HUE;
+	ctrl.value = 0;
+	call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
+	return sprintf(buf, "%d\n", ctrl.value >> 8);
+}
+static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
+
+static ssize_t show_contrast(struct class_device *class_dev, char *buf)
+{
+	struct video_device *vdev = to_video_device(class_dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	struct v4l2_control ctrl;
+	ctrl.id = V4L2_CID_CONTRAST;
+	ctrl.value = 0;
+	call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
+	return sprintf(buf, "%d\n", ctrl.value >> 8);
+}
+static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
+
+static ssize_t show_brightness(struct class_device *class_dev, char *buf)
+{
+	struct video_device *vdev = to_video_device(class_dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	struct v4l2_control ctrl;
+	ctrl.id = V4L2_CID_BRIGHTNESS;
+	ctrl.value = 0;
+	call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
+	return sprintf(buf, "%d\n", ctrl.value >> 8);
+}
+static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
+
+static ssize_t show_saturation(struct class_device *class_dev, char *buf)
+{
+	struct video_device *vdev = to_video_device(class_dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	struct v4l2_control ctrl;
+	ctrl.id = V4L2_CID_SATURATION;
+	ctrl.value = 0;
+	call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
+	return sprintf(buf, "%d\n", ctrl.value >> 8);
+}
+static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
+
+static ssize_t show_streaming(struct class_device *class_dev, char *buf)
+{
+	struct video_device *vdev = to_video_device(class_dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
+}
+static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
+
+static ssize_t show_compression(struct class_device *class_dev, char *buf)
+{
+	struct video_device *vdev = to_video_device(class_dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
+}
+static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
+
+static ssize_t show_device_bridge(struct class_device *class_dev, char *buf)
+{
+	struct video_device *vdev = to_video_device(class_dev);
+	struct usb_usbvision *usbvision = video_get_drvdata(vdev);
+	return sprintf(buf, "%d\n", usbvision->bridgeType);
+}
+static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
+
+static void usbvision_create_sysfs(struct video_device *vdev)
+{
+	int res;
+	if (vdev) {
+		res=video_device_create_file(vdev, &class_device_attr_version);
+		res=video_device_create_file(vdev, &class_device_attr_model);
+		res=video_device_create_file(vdev, &class_device_attr_hue);
+		res=video_device_create_file(vdev, &class_device_attr_contrast);
+		res=video_device_create_file(vdev, &class_device_attr_brightness);
+		res=video_device_create_file(vdev, &class_device_attr_saturation);
+		res=video_device_create_file(vdev, &class_device_attr_streaming);
+		res=video_device_create_file(vdev, &class_device_attr_compression);
+		res=video_device_create_file(vdev, &class_device_attr_bridge);
+	}
+}
+
+static void usbvision_remove_sysfs(struct video_device *vdev)
+{
+	if (vdev) {
+		video_device_remove_file(vdev, &class_device_attr_version);
+		video_device_remove_file(vdev, &class_device_attr_model);
+		video_device_remove_file(vdev, &class_device_attr_hue);
+		video_device_remove_file(vdev, &class_device_attr_contrast);
+		video_device_remove_file(vdev, &class_device_attr_brightness);
+		video_device_remove_file(vdev, &class_device_attr_saturation);
+		video_device_remove_file(vdev, &class_device_attr_streaming);
+		video_device_remove_file(vdev, &class_device_attr_compression);
+		video_device_remove_file(vdev, &class_device_attr_bridge);
+	}
+}
+
+
+/*
+ * usbvision_open()
+ *
+ * This is part of Video 4 Linux API. The driver can be opened by one
+ * client only (checks internal counter 'usbvision->user'). The procedure
+ * then allocates buffers needed for video processing.
+ *
+ */
+static int usbvision_v4l2_open(struct inode *inode, struct file *file)
+{
+	struct video_device *dev = video_devdata(file);
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
+	int errCode = 0;
+
+	PDEBUG(DBG_IO, "open");
+
+
+	usbvision_reset_powerOffTimer(usbvision);
+
+	if (usbvision->user)
+		errCode = -EBUSY;
+	else {
+		/* Allocate memory for the frame buffers */
+		errCode = usbvision_frames_alloc(usbvision);
+		if(!errCode) {
+			/* Allocate memory for the scratch ring buffer */
+			errCode = usbvision_scratch_alloc(usbvision);
+			if(!errCode) {
+				/* Allocate memory for the USB S buffers */
+				errCode = usbvision_sbuf_alloc(usbvision);
+				if ((!errCode) && (usbvision->isocMode==ISOC_MODE_COMPRESS)) {
+					/* Allocate intermediate decompression buffers only if needed */
+					errCode = usbvision_decompress_alloc(usbvision);
+				}
+			}
+		}
+		if (errCode) {
+			/* Deallocate all buffers if trouble */
+			usbvision_frames_free(usbvision);
+			usbvision_scratch_free(usbvision);
+			usbvision_sbuf_free(usbvision);
+			usbvision_decompress_free(usbvision);
+		}
+	}
+
+	/* If so far no errors then we shall start the camera */
+	if (!errCode) {
+		down(&usbvision->lock);
+		if (usbvision->power == 0) {
+			usbvision_power_on(usbvision);
+			usbvision_init_i2c(usbvision);
+		}
+
+		/* Send init sequence only once, it's large! */
+		if (!usbvision->initialized) {
+			int setup_ok = 0;
+			setup_ok = usbvision_setup(usbvision,isocMode);
+			if (setup_ok)
+				usbvision->initialized = 1;
+			else
+				errCode = -EBUSY;
+		}
+
+		if (!errCode) {
+			usbvision_begin_streaming(usbvision);
+			errCode = usbvision_init_isoc(usbvision);
+			/* device needs to be initialized before isoc transfer */
+			usbvision_muxsel(usbvision,0);
+			usbvision->user++;
+		}
+		else {
+			if (PowerOnAtOpen) {
+				usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
+				usbvision_power_off(usbvision);
+				usbvision->initialized = 0;
+			}
+		}
+		up(&usbvision->lock);
+	}
+
+	if (errCode) {
+	}
+
+	/* prepare queues */
+	usbvision_empty_framequeues(usbvision);
+
+	PDEBUG(DBG_IO, "success");
+	return errCode;
+}
+
+/*
+ * usbvision_v4l2_close()
+ *
+ * This is part of Video 4 Linux API. The procedure
+ * stops streaming and deallocates all buffers that were earlier
+ * allocated in usbvision_v4l2_open().
+ *
+ */
+static int usbvision_v4l2_close(struct inode *inode, struct file *file)
+{
+	struct video_device *dev = video_devdata(file);
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
+
+	PDEBUG(DBG_IO, "close");
+	down(&usbvision->lock);
+
+	usbvision_audio_off(usbvision);
+	usbvision_restart_isoc(usbvision);
+	usbvision_stop_isoc(usbvision);
+
+	usbvision_decompress_free(usbvision);
+	usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
+	usbvision_scratch_free(usbvision);
+	usbvision_sbuf_free(usbvision);
+
+	usbvision->user--;
+
+	if (PowerOnAtOpen) {
+		/* power off in a little while to avoid off/on every close/open short sequences */
+		usbvision_set_powerOffTimer(usbvision);
+		usbvision->initialized = 0;
+	}
+
+	up(&usbvision->lock);
+
+	if (usbvision->remove_pending) {
+		info("%s: Final disconnect", __FUNCTION__);
+		usbvision_release(usbvision);
+	}
+
+	PDEBUG(DBG_IO, "success");
+
+
+	return 0;
+}
+
+
+/*
+ * usbvision_ioctl()
+ *
+ * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
+ *
+ */
+static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
+				 unsigned int cmd, void *arg)
+{
+	struct video_device *dev = video_devdata(file);
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
+
+	if (!USBVISION_IS_OPERATIONAL(usbvision))
+		return -EFAULT;
+
+	switch (cmd) {
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+		/* ioctls to allow direct acces to the NT100x registers */
+		case VIDIOC_INT_G_REGISTER:
+		{
+			struct v4l2_register *reg = arg;
+			int errCode;
+
+			if (reg->i2c_id != 0)
+				return -EINVAL;
+			/* NT100x has a 8-bit register space */
+			errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
+			if (errCode < 0) {
+				err("%s: VIDIOC_INT_G_REGISTER failed: error %d", __FUNCTION__, errCode);
+			}
+			else {
+				reg->val=(unsigned char)errCode;
+				PDEBUG(DBG_IOCTL, "VIDIOC_INT_G_REGISTER reg=0x%02X, value=0x%02X",
+							(unsigned int)reg->reg, reg->val);
+				errCode = 0; // No error
+			}
+			return errCode;
+		}
+		case VIDIOC_INT_S_REGISTER:
+		{
+			struct v4l2_register *reg = arg;
+			int errCode;
+
+			if (reg->i2c_id != 0)
+				return -EINVAL;
+			if (!capable(CAP_SYS_ADMIN))
+				return -EPERM;
+			errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
+			if (errCode < 0) {
+				err("%s: VIDIOC_INT_S_REGISTER failed: error %d", __FUNCTION__, errCode);
+			}
+			else {
+				PDEBUG(DBG_IOCTL, "VIDIOC_INT_S_REGISTER reg=0x%02X, value=0x%02X",
+							(unsigned int)reg->reg, reg->val);
+				errCode = 0;
+			}
+			return 0;
+		}
+#endif
+		case VIDIOC_QUERYCAP:
+		{
+			struct v4l2_capability *vc=arg;
+
+			memset(vc, 0, sizeof(*vc));
+			strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
+			strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
+				sizeof(vc->card));
+			strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
+				sizeof(vc->bus_info));
+			vc->version = USBVISION_DRIVER_VERSION;
+			vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
+				V4L2_CAP_AUDIO |
+				V4L2_CAP_READWRITE |
+				V4L2_CAP_STREAMING |
+				(usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
+			PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
+			return 0;
+		}
+		case VIDIOC_ENUMINPUT:
+		{
+			struct v4l2_input *vi = arg;
+			int chan;
+
+			if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
+				return -EINVAL;
+			if (usbvision->have_tuner) {
+				chan = vi->index;
+			}
+			else {
+				chan = vi->index + 1; //skip Television string
+			}
+			switch(chan) {
+				case 0:
+					if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
+						strcpy(vi->name, "White Video Input");
+					}
+					else {
+						strcpy(vi->name, "Television");
+						vi->type = V4L2_INPUT_TYPE_TUNER;
+						vi->audioset = 1;
+						vi->tuner = chan;
+						vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
+					}
+					break;
+				case 1:
+					vi->type = V4L2_INPUT_TYPE_CAMERA;
+					if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
+						strcpy(vi->name, "Green Video Input");
+					}
+					else {
+						strcpy(vi->name, "Composite Video Input");
+					}
+					vi->std = V4L2_STD_PAL;
+					break;
+				case 2:
+					vi->type = V4L2_INPUT_TYPE_CAMERA;
+					if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
+						strcpy(vi->name, "Yellow Video Input");
+					}
+					else {
+					strcpy(vi->name, "S-Video Input");
+					}
+					vi->std = V4L2_STD_PAL;
+					break;
+				case 3:
+					vi->type = V4L2_INPUT_TYPE_CAMERA;
+					strcpy(vi->name, "Red Video Input");
+					vi->std = V4L2_STD_PAL;
+					break;
+			}
+			PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x",
+			       vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
+			return 0;
+		}
+		case VIDIOC_ENUMSTD:
+		{
+			struct v4l2_standard *e = arg;
+			unsigned int i;
+			int ret;
+
+			i = e->index;
+			if (i >= TVNORMS)
+				return -EINVAL;
+			ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
+						       tvnorms[e->index].name);
+			e->index = i;
+			if (ret < 0)
+				return ret;
+			return 0;
+		}
+		case VIDIOC_G_INPUT:
+		{
+			int *input = arg;
+			*input = usbvision->ctl_input;
+			return 0;
+		}
+		case VIDIOC_S_INPUT:
+		{
+			int *input = arg;
+			if ((*input >= usbvision->video_inputs) || (*input < 0) )
+				return -EINVAL;
+			usbvision->ctl_input = *input;
+
+			down(&usbvision->lock);
+			usbvision_muxsel(usbvision, usbvision->ctl_input);
+			usbvision_set_input(usbvision);
+			usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
+			up(&usbvision->lock);
+			return 0;
+		}
+		case VIDIOC_G_STD:
+		{
+			v4l2_std_id *id = arg;
+
+			*id = usbvision->tvnorm->id;
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
+			return 0;
+		}
+		case VIDIOC_S_STD:
+		{
+			v4l2_std_id *id = arg;
+			unsigned int i;
+
+			for (i = 0; i < TVNORMS; i++)
+				if (*id == tvnorms[i].id)
+					break;
+			if (i == TVNORMS)
+				for (i = 0; i < TVNORMS; i++)
+					if (*id & tvnorms[i].id)
+						break;
+			if (i == TVNORMS)
+				return -EINVAL;
+
+			down(&usbvision->lock);
+			usbvision->tvnorm = &tvnorms[i];
+
+			call_i2c_clients(usbvision, VIDIOC_S_STD,
+					 &usbvision->tvnorm->id);
+
+			up(&usbvision->lock);
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
+			return 0;
+		}
+		case VIDIOC_G_TUNER:
+		{
+			struct v4l2_tuner *vt = arg;
+
+			if (!usbvision->have_tuner || vt->index)	// Only tuner 0
+				return -EINVAL;
+			strcpy(vt->name, "Television");
+			/* Let clients fill in the remainder of this struct */
+			call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
+			return 0;
+		}
+		case VIDIOC_S_TUNER:
+		{
+			struct v4l2_tuner *vt = arg;
+
+			// Only no or one tuner for now
+			if (!usbvision->have_tuner || vt->index)
+				return -EINVAL;
+			/* let clients handle this */
+			call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
+			return 0;
+		}
+		case VIDIOC_G_FREQUENCY:
+		{
+			struct v4l2_frequency *freq = arg;
+
+			freq->tuner = 0; // Only one tuner
+			freq->type = V4L2_TUNER_ANALOG_TV;
+			freq->frequency = usbvision->freq;
+			PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
+			return 0;
+		}
+		case VIDIOC_S_FREQUENCY:
+		{
+			struct v4l2_frequency *freq = arg;
+
+			// Only no or one tuner for now
+			if (!usbvision->have_tuner || freq->tuner)
+				return -EINVAL;
+
+			usbvision->freq = freq->frequency;
+			call_i2c_clients(usbvision, cmd, freq);
+			PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
+			return 0;
+		}
+		case VIDIOC_G_AUDIO:
+		{
+			struct v4l2_audio *v = arg;
+			memset(v,0, sizeof(v));
+			strcpy(v->name, "TV");
+			PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
+			return 0;
+		}
+		case VIDIOC_S_AUDIO:
+		{
+			struct v4l2_audio *v = arg;
+			if(v->index) {
+				return -EINVAL;
+			}
+			PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
+			return 0;
+		}
+		case VIDIOC_QUERYCTRL:
+		{
+			struct v4l2_queryctrl *ctrl = arg;
+			int id=ctrl->id;
+
+			memset(ctrl,0,sizeof(*ctrl));
+			ctrl->id=id;
+
+			call_i2c_clients(usbvision, cmd, arg);
+
+			if (ctrl->type)
+				return 0;
+			else
+				return -EINVAL;
+
+			PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
+		}
+		case VIDIOC_G_CTRL:
+		{
+			struct v4l2_control *ctrl = arg;
+			PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
+			call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
+			return 0;
+		}
+		case VIDIOC_S_CTRL:
+		{
+			struct v4l2_control *ctrl = arg;
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
+			call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
+			return 0;
+		}
+		case VIDIOC_REQBUFS:
+		{
+			struct v4l2_requestbuffers *vr = arg;
+			int ret;
+
+			RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
+
+			// Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
+			if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
+			   (vr->memory != V4L2_MEMORY_MMAP))
+				return -EINVAL;
+
+			if(usbvision->streaming == Stream_On) {
+				if ((ret = usbvision_stream_interrupt(usbvision)))
+				    return ret;
+			}
+
+			usbvision_empty_framequeues(usbvision);
+
+			usbvision->curFrame = NULL;
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
+			return 0;
+		}
+		case VIDIOC_QUERYBUF:
+		{
+			struct v4l2_buffer *vb = arg;
+			struct usbvision_frame *frame;
+
+			// FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
+
+			if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
+				return -EINVAL;
+			}
+			if(vb->index>=USBVISION_NUMFRAMES)  {
+				return -EINVAL;
+			}
+			// Updating the corresponding frame state
+			vb->flags = 0;
+			frame = &usbvision->frame[vb->index];
+			if(frame->grabstate >= FrameState_Ready)
+				vb->flags |= V4L2_BUF_FLAG_QUEUED;
+			if(frame->grabstate >= FrameState_Done)
+				vb->flags |= V4L2_BUF_FLAG_DONE;
+			if(frame->grabstate == FrameState_Unused)
+				vb->flags |= V4L2_BUF_FLAG_MAPPED;
+			vb->memory = V4L2_MEMORY_MMAP;
+
+			vb->m.offset = vb->index*usbvision->max_frame_size;
+
+			vb->memory = V4L2_MEMORY_MMAP;
+			vb->field = V4L2_FIELD_NONE;
+			vb->length = usbvision->max_frame_size;
+			vb->timestamp = usbvision->frame[vb->index].timestamp;
+			vb->sequence = usbvision->frame[vb->index].sequence;
+			return 0;
+		}
+		case VIDIOC_QBUF:
+		{
+			struct v4l2_buffer *vb = arg;
+			struct usbvision_frame *frame;
+			unsigned long lock_flags;
+
+			// FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
+			if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
+				return -EINVAL;
+			}
+			if(vb->index>=USBVISION_NUMFRAMES)  {
+				return -EINVAL;
+			}
+
+			frame = &usbvision->frame[vb->index];
+
+			if (frame->grabstate != FrameState_Unused) {
+				return -EAGAIN;
+			}
+
+			/* Mark it as ready and enqueue frame */
+			frame->grabstate = FrameState_Ready;
+			frame->scanstate = ScanState_Scanning;
+			frame->scanlength = 0;	/* Accumulated in usbvision_parse_data() */
+
+			vb->flags &= ~V4L2_BUF_FLAG_DONE;
+
+			/* set v4l2_format index */
+			frame->v4l2_format = usbvision->palette;
+
+			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+			list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
+			spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
+			return 0;
+		}
+		case VIDIOC_DQBUF:
+		{
+			struct v4l2_buffer *vb = arg;
+			int ret;
+			struct usbvision_frame *f;
+			unsigned long lock_flags;
+
+			if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+				return -EINVAL;
+
+			if (list_empty(&(usbvision->outqueue))) {
+				if (usbvision->streaming == Stream_Idle)
+					return -EINVAL;
+				ret = wait_event_interruptible
+					(usbvision->wait_frame,
+					 !list_empty(&(usbvision->outqueue)));
+				if (ret)
+					return ret;
+			}
+
+			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+			f = list_entry(usbvision->outqueue.next,
+				       struct usbvision_frame, frame);
+			list_del(usbvision->outqueue.next);
+			spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+
+			f->grabstate = FrameState_Unused;
+
+			vb->memory = V4L2_MEMORY_MMAP;
+			vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
+			vb->index = f->index;
+			vb->sequence = f->sequence;
+			vb->timestamp = f->timestamp;
+			vb->field = V4L2_FIELD_NONE;
+			vb->bytesused = f->scanlength;
+
+			return 0;
+		}
+		case VIDIOC_STREAMON:
+		{
+			int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+			usbvision->streaming = Stream_On;
+
+			call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
+
+			return 0;
+		}
+		case VIDIOC_STREAMOFF:
+		{
+			int *type = arg;
+			int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+			if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+				return -EINVAL;
+
+			if(usbvision->streaming == Stream_On) {
+				usbvision_stream_interrupt(usbvision);
+				// Stop all video streamings
+				call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
+			}
+			usbvision_empty_framequeues(usbvision);
+
+			PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
+			return 0;
+		}
+		case VIDIOC_ENUM_FMT:
+		{
+			struct v4l2_fmtdesc *vfd = arg;
+
+			if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
+				return -EINVAL;
+			}
+			vfd->flags = 0;
+			vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+			strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
+			vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
+			memset(vfd->reserved, 0, sizeof(vfd->reserved));
+			return 0;
+		}
+		case VIDIOC_G_FMT:
+		{
+			struct v4l2_format *vf = arg;
+
+			switch (vf->type) {
+				case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+				{
+					vf->fmt.pix.width = usbvision->curwidth;
+					vf->fmt.pix.height = usbvision->curheight;
+					vf->fmt.pix.pixelformat = usbvision->palette.format;
+					vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
+					vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
+					vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+					vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
+				}
+				return 0;
+				default:
+					PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
+					return -EINVAL;
+			}
+			PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d",vf->fmt.win.w.width, vf->fmt.win.w.height);
+			return 0;
+		}
+		case VIDIOC_TRY_FMT:
+		case VIDIOC_S_FMT:
+		{
+			struct v4l2_format *vf = arg;
+			int formatIdx,ret;
+
+			switch(vf->type) {
+				case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+				{
+					/* Find requested format in available ones */
+					for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
+						if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
+							usbvision->palette = usbvision_v4l2_format[formatIdx];
+							break;
+						}
+					}
+					/* robustness */
+					if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
+						return -EINVAL;
+					}
+					RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
+					RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
+
+					/* stop io in case it is already in progress */
+					if(usbvision->streaming == Stream_On) {
+						if ((ret = usbvision_stream_interrupt(usbvision)))
+							return ret;
+					}
+					usbvision_empty_framequeues(usbvision);
+
+					usbvision->curFrame = NULL;
+
+					// by now we are committed to the new data...
+					down(&usbvision->lock);
+					usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
+					up(&usbvision->lock);
+
+					PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
+					       vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
+					return 0;
+				}
+				default:
+					return -EINVAL;
+			}
+		}
+		default:
+			return -ENOIOCTLCMD;
+	}
+	return 0;
+}
+
+static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
+		       unsigned int cmd, unsigned long arg)
+{
+	return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
+}
+
+
+static ssize_t usbvision_v4l2_read(struct file *file, char *buf,
+		      size_t count, loff_t *ppos)
+{
+	struct video_device *dev = video_devdata(file);
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
+	int noblock = file->f_flags & O_NONBLOCK;
+	unsigned long lock_flags;
+
+	int frmx = -1;
+	int ret,i;
+	struct usbvision_frame *frame;
+
+	PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
+
+	if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
+		return -EFAULT;
+
+	/* no stream is running, make it running ! */
+	usbvision->streaming = Stream_On;
+	call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
+
+	/* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
+	for(i=0;i<USBVISION_NUMFRAMES;i++) {
+		frame = &usbvision->frame[i];
+		if(frame->grabstate == FrameState_Unused) {
+			/* Mark it as ready and enqueue frame */
+			frame->grabstate = FrameState_Ready;
+			frame->scanstate = ScanState_Scanning;
+			frame->scanlength = 0;	/* Accumulated in usbvision_parse_data() */
+
+			/* set v4l2_format index */
+			frame->v4l2_format = usbvision->palette;
+
+			spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+			list_add_tail(&frame->frame, &usbvision->inqueue);
+			spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+		}
+	}
+
+	/* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
+	if (list_empty(&(usbvision->outqueue))) {
+		if(noblock)
+			return -EAGAIN;
+
+		ret = wait_event_interruptible
+			(usbvision->wait_frame,
+			 !list_empty(&(usbvision->outqueue)));
+		if (ret)
+			return ret;
+	}
+
+	spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+	frame = list_entry(usbvision->outqueue.next,
+			   struct usbvision_frame, frame);
+	list_del(usbvision->outqueue.next);
+	spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+
+	/* An error returns an empty frame */
+	if (frame->grabstate == FrameState_Error) {
+		frame->bytes_read = 0;
+		return 0;
+	}
+
+	PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
+		       frame->index, frame->bytes_read, frame->scanlength);
+
+	/* copy bytes to user space; we allow for partials reads */
+	if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
+		count = frame->scanlength - frame->bytes_read;
+
+	if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
+		return -EFAULT;
+	}
+
+	frame->bytes_read += count;
+	PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
+		       (unsigned long)count, frame->bytes_read);
+
+	// For now, forget the frame if it has not been read in one shot.
+/* 	if (frame->bytes_read >= frame->scanlength) {// All data has been read */
+		frame->bytes_read = 0;
+
+		/* Mark it as available to be used again. */
+		usbvision->frame[frmx].grabstate = FrameState_Unused;
+/* 	} */
+
+	return count;
+}
+
+static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	unsigned long size = vma->vm_end - vma->vm_start,
+		start = vma->vm_start;
+	void *pos;
+	u32 i;
+
+	struct video_device *dev = video_devdata(file);
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
+
+	down(&usbvision->lock);
+
+	if (!USBVISION_IS_OPERATIONAL(usbvision)) {
+		up(&usbvision->lock);
+		return -EFAULT;
+	}
+
+	if (!(vma->vm_flags & VM_WRITE) ||
+	    size != PAGE_ALIGN(usbvision->max_frame_size)) {
+		up(&usbvision->lock);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < USBVISION_NUMFRAMES; i++) {
+		if (((usbvision->max_frame_size*i) >> PAGE_SHIFT) == vma->vm_pgoff)
+			break;
+	}
+	if (i == USBVISION_NUMFRAMES) {
+		PDEBUG(DBG_FUNC, "mmap: user supplied mapping address is out of range");
+		up(&usbvision->lock);
+		return -EINVAL;
+	}
+
+	/* VM_IO is eventually going to replace PageReserved altogether */
+	vma->vm_flags |= VM_IO;
+	vma->vm_flags |= VM_RESERVED;	/* avoid to swap out this VMA */
+
+	pos = usbvision->frame[i].data;
+	while (size > 0) {
+
+		if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
+			PDEBUG(DBG_FUNC, "mmap: vm_insert_page failed");
+			up(&usbvision->lock);
+			return -EAGAIN;
+		}
+		start += PAGE_SIZE;
+		pos += PAGE_SIZE;
+		size -= PAGE_SIZE;
+	}
+
+	up(&usbvision->lock);
+	return 0;
+}
+
+
+/*
+ * Here comes the stuff for radio on usbvision based devices
+ *
+ */
+static int usbvision_radio_open(struct inode *inode, struct file *file)
+{
+	struct video_device *dev = video_devdata(file);
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
+	struct v4l2_frequency freq;
+	int errCode = 0;
+
+	PDEBUG(DBG_IO, "%s:", __FUNCTION__);
+
+	down(&usbvision->lock);
+
+	if (usbvision->user) {
+		err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
+		errCode = -EBUSY;
+	}
+	else {
+		if(PowerOnAtOpen) {
+			usbvision_reset_powerOffTimer(usbvision);
+			if (usbvision->power == 0) {
+				usbvision_power_on(usbvision);
+				usbvision_init_i2c(usbvision);
+			}
+		}
+
+		// If so far no errors then we shall start the radio
+		usbvision->radio = 1;
+		call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
+		freq.frequency = 1517; //SWR3 @ 94.8MHz
+		call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
+		usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
+		usbvision->user++;
+	}
+
+	if (errCode) {
+		if (PowerOnAtOpen) {
+			usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
+			usbvision_power_off(usbvision);
+			usbvision->initialized = 0;
+		}
+	}
+	up(&usbvision->lock);
+	return errCode;
+}
+
+
+static int usbvision_radio_close(struct inode *inode, struct file *file)
+{
+	struct video_device *dev = video_devdata(file);
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
+	int errCode = 0;
+
+	PDEBUG(DBG_IO, "");
+
+	down(&usbvision->lock);
+
+	usbvision_audio_off(usbvision);
+	usbvision->radio=0;
+	usbvision->user--;
+
+	if (PowerOnAtOpen) {
+		usbvision_set_powerOffTimer(usbvision);
+		usbvision->initialized = 0;
+	}
+
+	up(&usbvision->lock);
+
+	if (usbvision->remove_pending) {
+		info("%s: Final disconnect", __FUNCTION__);
+		usbvision_release(usbvision);
+	}
+
+
+	PDEBUG(DBG_IO, "success");
+
+	return errCode;
+}
+
+static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
+				 unsigned int cmd, void *arg)
+{
+	struct video_device *dev = video_devdata(file);
+	struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
+
+	if (!USBVISION_IS_OPERATIONAL(usbvision))
+		return -EIO;
+
+	switch (cmd) {
+		case VIDIOC_QUERYCAP:
+		{
+			struct v4l2_capability *vc=arg;
+
+			memset(vc, 0, sizeof(*vc));
+			strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
+			strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
+				sizeof(vc->card));
+			strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
+				sizeof(vc->bus_info));
+			vc->version = USBVISION_DRIVER_VERSION;
+			vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
+			PDEBUG(DBG_IO, "VIDIOC_QUERYCAP");
+			return 0;
+		}
+		case VIDIOC_QUERYCTRL:
+		{
+			struct v4l2_queryctrl *ctrl = arg;
+			int id=ctrl->id;
+
+			memset(ctrl,0,sizeof(*ctrl));
+			ctrl->id=id;
+
+			call_i2c_clients(usbvision, cmd, arg);
+			PDEBUG(DBG_IO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
+
+			if (ctrl->type)
+				return 0;
+			else
+				return -EINVAL;
+
+		}
+		case VIDIOC_G_CTRL:
+		{
+			struct v4l2_control *ctrl = arg;
+
+			call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
+			PDEBUG(DBG_IO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
+			return 0;
+		}
+		case VIDIOC_S_CTRL:
+		{
+			struct v4l2_control *ctrl = arg;
+
+			call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
+			PDEBUG(DBG_IO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
+			return 0;
+		}
+		case VIDIOC_G_TUNER:
+		{
+			struct v4l2_tuner *t = arg;
+
+			if (t->index > 0)
+				return -EINVAL;
+
+			memset(t,0,sizeof(*t));
+			strcpy(t->name, "Radio");
+			t->type = V4L2_TUNER_RADIO;
+
+			/* Let clients fill in the remainder of this struct */
+			call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
+			PDEBUG(DBG_IO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
+			return 0;
+		}
+		case VIDIOC_S_TUNER:
+		{
+			struct v4l2_tuner *vt = arg;
+
+			// Only no or one tuner for now
+			if (!usbvision->have_tuner || vt->index)
+				return -EINVAL;
+			/* let clients handle this */
+			call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
+
+			PDEBUG(DBG_IO, "VIDIOC_S_TUNER");
+			return 0;
+		}
+		case VIDIOC_G_AUDIO:
+		{
+			struct v4l2_audio *a = arg;
+
+			memset(a,0,sizeof(*a));
+			strcpy(a->name,"Radio");
+			PDEBUG(DBG_IO, "VIDIOC_G_AUDIO");
+			return 0;
+		}
+		case VIDIOC_S_AUDIO:
+		case VIDIOC_S_INPUT:
+		case VIDIOC_S_STD:
+		return 0;
+
+		case VIDIOC_G_FREQUENCY:
+		{
+			struct v4l2_frequency *f = arg;
+
+			memset(f,0,sizeof(*f));
+
+			f->type = V4L2_TUNER_RADIO;
+			f->frequency = usbvision->freq;
+			call_i2c_clients(usbvision, cmd, f);
+			PDEBUG(DBG_IO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
+
+			return 0;
+		}
+		case VIDIOC_S_FREQUENCY:
+		{
+			struct v4l2_frequency *f = arg;
+
+			if (f->tuner != 0)
+				return -EINVAL;
+			usbvision->freq = f->frequency;
+			call_i2c_clients(usbvision, cmd, f);
+			PDEBUG(DBG_IO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
+
+			return 0;
+		}
+		default:
+		{
+			PDEBUG(DBG_IO, "%s: Unknown command %x", __FUNCTION__, cmd);
+			return -ENOIOCTLCMD;
+		}
+	}
+	return 0;
+}
+
+
+static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
+		       unsigned int cmd, unsigned long arg)
+{
+	return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
+}
+
+
+/*
+ * Here comes the stuff for vbi on usbvision based devices
+ *
+ */
+static int usbvision_vbi_open(struct inode *inode, struct file *file)
+{
+	/* TODO */
+	return -EINVAL;
+
+}
+
+static int usbvision_vbi_close(struct inode *inode, struct file *file)
+{
+	/* TODO */
+	return -EINVAL;
+}
+
+static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
+				 unsigned int cmd, void *arg)
+{
+	/* TODO */
+	return -EINVAL;
+}
+
+static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
+		       unsigned int cmd, unsigned long arg)
+{
+	return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
+}
+
+
+//
+// Video registration stuff
+//
+
+// Video template
+static struct file_operations usbvision_fops = {
+  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
+	.owner             = THIS_MODULE,
+  #endif
+	.open		= usbvision_v4l2_open,
+	.release	= usbvision_v4l2_close,
+	.read		= usbvision_v4l2_read,
+	.mmap		= usbvision_v4l2_mmap,
+	.ioctl		= usbvision_v4l2_ioctl,
+	.llseek		= no_llseek,
+};
+static struct video_device usbvision_video_template = {
+  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
+	.owner             = THIS_MODULE,
+  #endif
+	.type		= VID_TYPE_TUNER | VID_TYPE_CAPTURE,
+	.hardware	= VID_HARDWARE_USBVISION,
+	.fops		= &usbvision_fops,
+  #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+	.name           = "usbvision-video",
+	.release	= video_device_release,
+  #endif
+	.minor		= -1,
+};
+
+
+// Radio template
+static struct file_operations usbvision_radio_fops = {
+  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
+	.owner             = THIS_MODULE,
+  #endif
+	.open		= usbvision_radio_open,
+	.release	= usbvision_radio_close,
+	.ioctl		= usbvision_radio_ioctl,
+	.llseek		= no_llseek,
+};
+
+static struct video_device usbvision_radio_template=
+{
+  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
+	.owner             = THIS_MODULE,
+  #endif
+	.type		= VID_TYPE_TUNER,
+	.hardware	= VID_HARDWARE_USBVISION,
+	.fops		= &usbvision_radio_fops,
+  #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+	.release	= video_device_release,
+	.name           = "usbvision-radio",
+  #endif
+	.minor		= -1,
+};
+
+
+// vbi template
+static struct file_operations usbvision_vbi_fops = {
+  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
+	.owner             = THIS_MODULE,
+  #endif
+	.open		= usbvision_vbi_open,
+	.release	= usbvision_vbi_close,
+	.ioctl		= usbvision_vbi_ioctl,
+	.llseek		= no_llseek,
+};
+
+static struct video_device usbvision_vbi_template=
+{
+  #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
+	.owner             = THIS_MODULE,
+  #endif
+	.type		= VID_TYPE_TUNER,
+	.hardware	= VID_HARDWARE_USBVISION,
+	.fops		= &usbvision_vbi_fops,
+  #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+	.release	= video_device_release,
+	.name           = "usbvision-vbi",
+  #endif
+	.minor		= -1,
+};
+
+
+static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
+					struct video_device *vdev_template,
+					char *name)
+{
+	struct usb_device *usb_dev = usbvision->dev;
+	struct video_device *vdev;
+
+	if (usb_dev == NULL) {
+		err("%s: usbvision->dev is not set", __FUNCTION__);
+		return NULL;
+	}
+
+	vdev = video_device_alloc();
+	if (NULL == vdev) {
+		return NULL;
+	}
+	*vdev = *vdev_template;
+//	vdev->minor   = -1;
+	vdev->dev     = &usb_dev->dev;
+	snprintf(vdev->name, sizeof(vdev->name), "%s", name);
+	video_set_drvdata(vdev, usbvision);
+	return vdev;
+}
+
+// unregister video4linux devices
+static void usbvision_unregister_video(struct usb_usbvision *usbvision)
+{
+	// vbi Device:
+	if (usbvision->vbi) {
+		PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
+		if (usbvision->vbi->minor != -1) {
+			video_unregister_device(usbvision->vbi);
+		}
+		else {
+			video_device_release(usbvision->vbi);
+		}
+		usbvision->vbi = NULL;
+	}
+
+	// Radio Device:
+	if (usbvision->rdev) {
+		PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
+		if (usbvision->rdev->minor != -1) {
+			video_unregister_device(usbvision->rdev);
+		}
+		else {
+			video_device_release(usbvision->rdev);
+		}
+		usbvision->rdev = NULL;
+	}
+
+	// Video Device:
+	if (usbvision->vdev) {
+		PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
+		if (usbvision->vdev->minor != -1) {
+			video_unregister_device(usbvision->vdev);
+		}
+		else {
+			video_device_release(usbvision->vdev);
+		}
+		usbvision->vdev = NULL;
+	}
+}
+
+// register video4linux devices
+static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
+{
+	// Video Device:
+	usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
+	if (usbvision->vdev == NULL) {
+		goto err_exit;
+	}
+	if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
+		goto err_exit;
+	}
+	info("USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]", usbvision->nr,usbvision->vdev->minor & 0x1f);
+
+	// Radio Device:
+	if (usbvision_device_data[usbvision->DevModel].Radio) {
+		// usbvision has radio
+		usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
+		if (usbvision->rdev == NULL) {
+			goto err_exit;
+		}
+		if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
+			goto err_exit;
+		}
+		info("USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]", usbvision->nr, usbvision->rdev->minor & 0x1f);
+	}
+	// vbi Device:
+	if (usbvision_device_data[usbvision->DevModel].vbi) {
+		usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
+		if (usbvision->vdev == NULL) {
+			goto err_exit;
+		}
+		if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
+			goto err_exit;
+		}
+		info("USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)", usbvision->nr,usbvision->vbi->minor & 0x1f);
+	}
+	// all done
+	return 0;
+
+ err_exit:
+	err("USBVision[%d]: video_register_device() failed", usbvision->nr);
+	usbvision_unregister_video(usbvision);
+	return -1;
+}
+
+/*
+ * usbvision_alloc()
+ *
+ * This code allocates the struct usb_usbvision. It is filled with default values.
+ *
+ * Returns NULL on error, a pointer to usb_usbvision else.
+ *
+ */
+static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
+{
+	struct usb_usbvision *usbvision;
+
+	if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
+		goto err_exit;
+	}
+
+	usbvision->dev = dev;
+
+	init_MUTEX(&usbvision->lock);	/* to 1 == available */
+
+	// prepare control urb for control messages during interrupts
+	usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
+	if (usbvision->ctrlUrb == NULL) {
+		goto err_exit;
+	}
+	init_waitqueue_head(&usbvision->ctrlUrb_wq);
+	init_MUTEX(&usbvision->ctrlUrbLock);	/* to 1 == available */
+
+	usbvision_init_powerOffTimer(usbvision);
+
+	return usbvision;
+
+err_exit:
+	if (usbvision && usbvision->ctrlUrb) {
+		usb_free_urb(usbvision->ctrlUrb);
+	}
+	if (usbvision) {
+		kfree(usbvision);
+	}
+	return NULL;
+}
+
+/*
+ * usbvision_release()
+ *
+ * This code does final release of struct usb_usbvision. This happens
+ * after the device is disconnected -and- all clients closed their files.
+ *
+ */
+static void usbvision_release(struct usb_usbvision *usbvision)
+{
+	PDEBUG(DBG_PROBE, "");
+
+	down(&usbvision->lock);
+
+	usbvision_reset_powerOffTimer(usbvision);
+
+	usbvision->initialized = 0;
+
+	up(&usbvision->lock);
+
+	usbvision_remove_sysfs(usbvision->vdev);
+	usbvision_unregister_video(usbvision);
+
+	if (usbvision->ctrlUrb) {
+		usb_free_urb(usbvision->ctrlUrb);
+	}
+
+	kfree(usbvision);
+
+	PDEBUG(DBG_PROBE, "success");
+}
+
+
+/******************************** usb interface *****************************************/
+
+static void usbvision_configure_video(struct usb_usbvision *usbvision)
+{
+	int model,i;
+
+	if (usbvision == NULL)
+		return;
+
+	model = usbvision->DevModel;
+	usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
+
+	if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
+		usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
+	} else {
+		usbvision->Vin_Reg2_Preset = 0;
+	}
+
+	for (i = 0; i < TVNORMS; i++)
+		if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
+			break;
+	if (i == TVNORMS)
+		i = 0;
+	usbvision->tvnorm = &tvnorms[i];        /* set default norm */
+
+	usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
+	usbvision->ctl_input = 0;
+
+	/* This should be here to make i2c clients to be able to register */
+	usbvision_audio_off(usbvision);	//first switch off audio
+	if (!PowerOnAtOpen) {
+		usbvision_power_on(usbvision);	//and then power up the noisy tuner
+		usbvision_init_i2c(usbvision);
+	}
+}
+
+/*
+ * usbvision_probe()
+ *
+ * This procedure queries device descriptor and accepts the interface
+ * if it looks like USBVISION video device
+ *
+ */
+static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
+{
+	struct usb_device *dev = interface_to_usbdev(intf);
+	__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
+	const struct usb_host_interface *interface;
+	struct usb_usbvision *usbvision = NULL;
+	const struct usb_endpoint_descriptor *endpoint;
+	int model;
+
+	PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
+					dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
+	/* Is it an USBVISION video dev? */
+	model = 0;
+	for(model = 0; usbvision_device_data[model].idVendor; model++) {
+		if (le16_to_cpu(dev->descriptor.idVendor) != usbvision_device_data[model].idVendor) {
+			continue;
+		}
+		if (le16_to_cpu(dev->descriptor.idProduct) != usbvision_device_data[model].idProduct) {
+			continue;
+		}
+
+		info("%s: %s found", __FUNCTION__, usbvision_device_data[model].ModelString);
+		break;
+	}
+
+	if (usbvision_device_data[model].idVendor == 0) {
+		return -ENODEV; //no matching device
+	}
+	if (usbvision_device_data[model].Interface >= 0) {
+		interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
+	}
+	else {
+		interface = &dev->actconfig->interface[ifnum]->altsetting[0];
+	}
+	endpoint = &interface->endpoint[1].desc;
+	if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
+		err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
+		err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
+		return -ENODEV;
+	}
+	if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
+		err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
+		return -ENODEV;
+	}
+
+	usb_get_dev(dev);
+
+	if ((usbvision = usbvision_alloc(dev)) == NULL) {
+		err("%s: couldn't allocate USBVision struct", __FUNCTION__);
+		return -ENOMEM;
+	}
+	if (dev->descriptor.bNumConfigurations > 1) {
+		usbvision->bridgeType = BRIDGE_NT1004;
+	}
+	else if (usbvision_device_data[model].ModelString == "Dazzle Fusion Model DVC-90 Rev 1 (SECAM)") {
+		usbvision->bridgeType = BRIDGE_NT1005;
+	}
+	else {
+		usbvision->bridgeType = BRIDGE_NT1003;
+	}
+	PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
+
+	down(&usbvision->lock);
+
+	usbvision->nr = usbvision_nr++;
+
+	usbvision->have_tuner = usbvision_device_data[model].Tuner;
+	if (usbvision->have_tuner) {
+		usbvision->tuner_type = usbvision_device_data[model].TunerType;
+	}
+
+	usbvision->tuner_addr = ADDR_UNSET;
+
+	usbvision->DevModel = model;
+	usbvision->remove_pending = 0;
+	usbvision->iface = ifnum;
+	usbvision->ifaceAltInactive = 0;
+	usbvision->ifaceAltActive = 1;
+	usbvision->video_endp = endpoint->bEndpointAddress;
+	usbvision->isocPacketSize = 0;
+	usbvision->usb_bandwidth = 0;
+	usbvision->user = 0;
+	usbvision->streaming = Stream_Off;
+	usbvision_register_video(usbvision);
+	usbvision_configure_video(usbvision);
+	up(&usbvision->lock);
+
+
+	usb_set_intfdata (intf, usbvision);
+	usbvision_create_sysfs(usbvision->vdev);
+
+	PDEBUG(DBG_PROBE, "success");
+	return 0;
+}
+
+
+/*
+ * usbvision_disconnect()
+ *
+ * This procedure stops all driver activity, deallocates interface-private
+ * structure (pointed by 'ptr') and after that driver should be removable
+ * with no ill consequences.
+ *
+ */
+static void __devexit usbvision_disconnect(struct usb_interface *intf)
+{
+	struct usb_usbvision *usbvision = usb_get_intfdata(intf);
+
+	PDEBUG(DBG_PROBE, "");
+
+	if (usbvision == NULL) {
+		err("%s: usb_get_intfdata() failed", __FUNCTION__);
+		return;
+	}
+	usb_set_intfdata (intf, NULL);
+
+	down(&usbvision->lock);
+
+	// At this time we ask to cancel outstanding URBs
+	usbvision_stop_isoc(usbvision);
+
+	if (usbvision->power) {
+		usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
+		usbvision_power_off(usbvision);
+	}
+	usbvision->remove_pending = 1;	// Now all ISO data will be ignored
+
+	usb_put_dev(usbvision->dev);
+	usbvision->dev = NULL;	// USB device is no more
+
+	up(&usbvision->lock);
+
+	if (usbvision->user) {
+		info("%s: In use, disconnect pending", __FUNCTION__);
+		wake_up_interruptible(&usbvision->wait_frame);
+		wake_up_interruptible(&usbvision->wait_stream);
+	}
+	else {
+		usbvision_release(usbvision);
+	}
+
+	PDEBUG(DBG_PROBE, "success");
+
+}
+
+static struct usb_driver usbvision_driver = {
+	.name		= "usbvision",
+	.id_table	= usbvision_table,
+	.probe		= usbvision_probe,
+	.disconnect	= usbvision_disconnect
+};
+
+/*
+ * customdevice_process()
+ *
+ * This procedure preprocesses CustomDevice parameter if any
+ *
+ */
+void customdevice_process(void)
+{
+	usbvision_device_data[0]=usbvision_device_data[1];
+	usbvision_table[0]=usbvision_table[1];
+
+	if(CustomDevice)
+	{
+		char *parse=CustomDevice;
+
+		PDEBUG(DBG_PROBE, "CustomDevide=%s", CustomDevice);
+
+		/*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
+		usbvision_device_data[0].idVendor;
+		usbvision_device_data[0].idProduct;
+		usbvision_device_data[0].Interface;
+		usbvision_device_data[0].Codec;
+		usbvision_device_data[0].VideoChannels;
+		usbvision_device_data[0].VideoNorm;
+		usbvision_device_data[0].AudioChannels;
+		usbvision_device_data[0].Radio;
+		usbvision_device_data[0].Tuner;
+		usbvision_device_data[0].TunerType;
+		usbvision_device_data[0].Vin_Reg1;
+		usbvision_device_data[0].Vin_Reg2;
+		usbvision_device_data[0].X_Offset;
+		usbvision_device_data[0].Y_Offset;
+		usbvision_device_data[0].Dvi_yuv;
+		usbvision_device_data[0].ModelString;
+		*/
+
+		rmspace(parse);
+		usbvision_device_data[0].ModelString="USBVISION Custom Device";
+
+		parse+=2;
+		sscanf(parse,"%x",&usbvision_device_data[0].idVendor);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_device_data[0].idVendor);
+		parse+=2;
+		sscanf(parse,"%x",&usbvision_device_data[0].idProduct);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_device_data[0].idProduct);
+		sscanf(parse,"%d",&usbvision_device_data[0].Interface);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
+		sscanf(parse,"%d",&usbvision_device_data[0].Codec);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
+		sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
+
+		switch(*parse)
+		{
+			case 'P':
+				PDEBUG(DBG_PROBE, "VideoNorm=PAL");
+				usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
+				break;
+
+			case 'S':
+				PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
+				usbvision_device_data[0].VideoNorm=VIDEO_MODE_SECAM;
+				break;
+
+			case 'N':
+				PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
+				usbvision_device_data[0].VideoNorm=VIDEO_MODE_NTSC;
+				break;
+
+			default:
+				PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
+				usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
+				break;
+		}
+		goto2next(parse);
+
+		sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
+		sscanf(parse,"%d",&usbvision_device_data[0].Radio);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
+		sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
+		sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
+		sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
+		sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
+		sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
+		sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
+		goto2next(parse);
+		PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
+		sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
+		PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
+
+		//add to usbvision_table also
+		usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
+		usbvision_table[0].idVendor=usbvision_device_data[0].idVendor;
+		usbvision_table[0].idProduct=usbvision_device_data[0].idProduct;
+
+	}
+}
+
+
+
+/*
+ * usbvision_init()
+ *
+ * This code is run to initialize the driver.
+ *
+ */
+static int __init usbvision_init(void)
+{
+	int errCode;
+
+	PDEBUG(DBG_PROBE, "");
+
+	PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled [video]");
+	PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
+	PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
+	PDEBUG(DBG_FUNC, "FUNC    debugging is enabled [video]");
+
+	/* disable planar mode support unless compression enabled */
+	if (isocMode != ISOC_MODE_COMPRESS ) {
+		// FIXME : not the right way to set supported flag
+		usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
+		usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
+	}
+
+	customdevice_process();
+
+	errCode = usb_register(&usbvision_driver);
+
+	if (errCode == 0) {
+		info(DRIVER_DESC " : " USBVISION_VERSION_STRING);
+		PDEBUG(DBG_PROBE, "success");
+	}
+	return errCode;
+}
+
+static void __exit usbvision_exit(void)
+{
+ PDEBUG(DBG_PROBE, "");
+
+ usb_deregister(&usbvision_driver);
+ PDEBUG(DBG_PROBE, "success");
+}
+
+module_init(usbvision_init);
+module_exit(usbvision_exit);
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
diff --git a/drivers/media/video/usbvision/usbvision.h b/drivers/media/video/usbvision/usbvision.h
index f304e66b03a6..f2eeda8326ff 100644
--- a/drivers/media/video/usbvision/usbvision.h
+++ b/drivers/media/video/usbvision/usbvision.h
@@ -28,7 +28,9 @@
 
 #include <linux/list.h>
 #include <linux/usb.h>
-#include "usbvision-i2c.h"
+#include <media/v4l2-common.h>
+#include <media/tuner.h>
+#include <linux/videodev2.h>
 
 #ifndef VID_HARDWARE_USBVISION
 	#define VID_HARDWARE_USBVISION 34   /* USBVision Video Grabber */
@@ -139,11 +141,21 @@
 #define USBVISION_MAX_ISOC_PACKET_SIZE 	959			// NT1003 Specs Document says 1023
 
 #define USBVISION_NUM_HEADERMARKER	20
-#define USBVISION_NUMFRAMES		3
-#define USBVISION_NUMSBUF		2
+#define USBVISION_NUMFRAMES		3  /* Maximum number of frames an application can get */
+#define USBVISION_NUMSBUF		2 /* Dimensioning the USB S buffering */
 
 #define USBVISION_POWEROFF_TIME		3 * (HZ)		// 3 seconds
 
+
+#define FRAMERATE_MIN	0
+#define FRAMERATE_MAX	31
+
+enum {
+	ISOC_MODE_YUV422 = 0x03,
+	ISOC_MODE_YUV420 = 0x14,
+	ISOC_MODE_COMPRESS = 0x60,
+};
+
 /* This macro restricts an int variable to an inclusive range */
 #define RESTRICT_TO_RANGE(v,mi,ma) { if ((v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); }
 
@@ -181,8 +193,6 @@
     mr = LIMIT_RGB(mm_r); \
 }
 
-
-
 /* Debugging aid */
 #define USBVISION_SAY_AND_WAIT(what) { \
 	wait_queue_head_t wq; \
@@ -202,7 +212,23 @@
 	((udevice)->last_error == 0) && \
 	(!(udevice)->remove_pending))
 
+/* I2C structures */
+struct i2c_algo_usb_data {
+	void *data;		/* private data for lowlevel routines */
+	int (*inb) (void *data, unsigned char addr, char *buf, short len);
+	int (*outb) (void *data, unsigned char addr, char *buf, short len);
+
+	/* local settings */
+	int udelay;
+	int mdelay;
+	int timeout;
+};
 
+#define I2C_USB_ADAP_MAX	16
+
+/* ----------------------------------------------------------------- */
+/* usbvision video structures                                        */
+/* ----------------------------------------------------------------- */
 enum ScanState {
 	ScanState_Scanning,	/* Scanning for header */
 	ScanState_Lines		/* Parsing lines */
@@ -347,7 +373,6 @@ struct usb_usbvision {
 	struct video_device *vdev;         				/* Video Device */
 	struct video_device *rdev;               			/* Radio Device */
 	struct video_device *vbi; 					/* VBI Device   */
-	struct video_audio audio_dev;					/* Current audio params */
 
 	/* i2c Declaration Section*/
 	struct i2c_adapter i2c_adap;
@@ -361,6 +386,7 @@ struct usb_usbvision {
 	wait_queue_head_t ctrlUrb_wq;					// Processes waiting
 	struct semaphore ctrlUrbLock;
 
+	/* configuration part */
 	int have_tuner;
 	int tuner_type;
 	int tuner_addr;
@@ -372,7 +398,7 @@ struct usb_usbvision {
 	int AudioMute;
 	int AudioChannel;
 	int isocMode;							// format of video data for the usb isoc-transfer
-	unsigned int nr;						// Number of the device < MAX_USBVISION
+	unsigned int nr;						// Number of the device
 
 	/* Device structure */
 	struct usb_device *dev;
@@ -384,7 +410,6 @@ struct usb_usbvision {
 	struct work_struct powerOffWork;
 	int power;							/* is the device powered on? */
 	int user;							/* user count for exclusive use */
-	int usbvision_used;						/* Is this structure in use? */
 	int initialized;						/* Had we already sent init sequence? */
 	int DevModel;							/* What type of USBVISION device we got? */
 	enum StreamState streaming;					/* Are we streaming Isochronous? */
@@ -402,7 +427,6 @@ struct usb_usbvision {
 	wait_queue_head_t wait_stream;					/* Processes waiting */
 	struct usbvision_frame *curFrame;				// pointer to current frame, set by usbvision_find_header
 	struct usbvision_frame frame[USBVISION_NUMFRAMES];		// frame buffer
-	int curSbufNum;							// number of current receiving sbuf
 	struct usbvision_sbuf sbuf[USBVISION_NUMSBUF];			// S buffering
 	volatile int remove_pending;					/* If set then about to exit */
 
@@ -413,13 +437,7 @@ struct usb_usbvision {
 	int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
 	int scratch_headermarker_read_ptr;
 	int scratch_headermarker_write_ptr;
-	int isocstate;
-	/* color controls */
-	int saturation;
-	int hue;
-	int brightness;
-	int contrast;
-	int depth;
+	enum IsocState isocstate;
 	struct usbvision_v4l2_format_st palette;
 
 	struct v4l2_capability vcap;					/* Video capabilities */
@@ -427,17 +445,6 @@ struct usb_usbvision {
 	struct usbvision_tvnorm *tvnorm;				/* selected tv norm */
 	unsigned char video_endp;					/* 0x82 for USBVISION devices based */
 
-	// Overlay stuff:
-	struct v4l2_framebuffer vid_buf;
-	struct v4l2_format vid_win;
-	int vid_buf_valid;						// Status: video buffer is valid (set)
-	int vid_win_valid;						// Status: video window is valid (set)
-	int	overlay;						/*Status: Are we overlaying? */
-	unsigned int 	clipmask[USBVISION_CLIPMASK_SIZE / 4];
-	unsigned char   *overlay_base;					/* Virtual base address of video buffer */
-	unsigned char   *overlay_win;					/* virt start address of overlay window */
-	struct usbvision_frame overlay_frame;
-
 	// Decompression stuff:
 	unsigned char *IntraFrameBuffer;				/* Buffer for reference frame */
 	int BlockPos; 							//for test only
@@ -449,16 +456,6 @@ struct usb_usbvision {
 	int lastComprLevel;						// How strong (100) or weak (0) was compression
 	int usb_bandwidth;						/* Mbit/s */
 
-	/* /proc entries, relative to /proc/video/usbvision/ */
-	struct proc_dir_entry *proc_devdir;		/* Per-device proc directory */
-	struct proc_dir_entry *proc_info;		/* <minor#>/info entry */
-	struct proc_dir_entry *proc_register;		/* <minor#>/register entry */
-	struct proc_dir_entry *proc_freq; 		/* <minor#>/freq entry */
-	struct proc_dir_entry *proc_input; 		/* <minor#>/input entry */
-	struct proc_dir_entry *proc_frame;		/* <minor#>/frame entry */
-	struct proc_dir_entry *proc_button;		/* <minor#>/button entry */
-	struct proc_dir_entry *proc_control;		/* <minor#>/control entry */
-
 	/* Statistics that can be overlayed on the screen */
 	unsigned long isocUrbCount;			// How many URBs we received so far
 	unsigned long urb_length;			/* Length of last URB */
@@ -479,6 +476,70 @@ struct usb_usbvision {
 	int ComprBlockTypes[4];
 };
 
+
+/* --------------------------------------------------------------- */
+/* defined in usbvision-i2c.c                                      */
+/* i2c-algo-usb declaration                                        */
+/* --------------------------------------------------------------- */
+
+int usbvision_i2c_usb_add_bus(struct i2c_adapter *);
+int usbvision_i2c_usb_del_bus(struct i2c_adapter *);
+
+static inline void *i2c_get_algo_usb_data (struct i2c_algo_usb_data *dev)
+{
+	return dev->data;
+}
+
+static inline void i2c_set_algo_usb_data (struct i2c_algo_usb_data *dev, void *data)
+{
+	dev->data = data;
+}
+
+
+/* ----------------------------------------------------------------------- */
+/* usbvision specific I2C functions                                        */
+/* ----------------------------------------------------------------------- */
+int usbvision_init_i2c(struct usb_usbvision *usbvision);
+void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,void *arg);
+
+/* defined in usbvision-core.c                                      */
+void *usbvision_rvmalloc(unsigned long size);
+void usbvision_rvfree(void *mem, unsigned long size);
+int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
+int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
+			unsigned char value);
+
+int usbvision_frames_alloc(struct usb_usbvision *usbvision);
+void usbvision_frames_free(struct usb_usbvision *usbvision);
+int usbvision_scratch_alloc(struct usb_usbvision *usbvision);
+void usbvision_scratch_free(struct usb_usbvision *usbvision);
+int usbvision_sbuf_alloc(struct usb_usbvision *usbvision);
+void usbvision_sbuf_free(struct usb_usbvision *usbvision);
+int usbvision_decompress_alloc(struct usb_usbvision *usbvision);
+void usbvision_decompress_free(struct usb_usbvision *usbvision);
+
+int usbvision_setup(struct usb_usbvision *usbvision,int format);
+int usbvision_init_isoc(struct usb_usbvision *usbvision);
+int usbvision_restart_isoc(struct usb_usbvision *usbvision);
+void usbvision_stop_isoc(struct usb_usbvision *usbvision);
+
+int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel);
+int usbvision_audio_off(struct usb_usbvision *usbvision);
+
+int usbvision_begin_streaming(struct usb_usbvision *usbvision);
+void usbvision_empty_framequeues(struct usb_usbvision *dev);
+int usbvision_stream_interrupt(struct usb_usbvision *dev);
+
+int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
+int usbvision_set_input(struct usb_usbvision *usbvision);
+int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
+
+void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision);
+void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision);
+void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision);
+int usbvision_power_off(struct usb_usbvision *usbvision);
+int usbvision_power_on(struct usb_usbvision *usbvision);
+
 #endif									/* __LINUX_USBVISION_H */
 
 /*