SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/usbvision/usbvision-core.c

   1 /*
   2  * USB USBVISION Video device driver 0.9.8.3cvs (For Kernel 2.4.19-2.4.32 + 2.6.0-2.6.16)
   3  *
   4  *
   5  *
   6  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   7  *
   8  * This module is part of usbvision driver project.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Let's call the version 0.... until compression decoding is completely
  25  * implemented.
  26  *
  27  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
  28  * It was based on USB CPiA driver written by Peter Pregler,
  29  * Scott J. Bertin and Johannes Erdfelt
  30  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
  31  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
  32  * Updates to driver completed by Dwaine P. Garden
  33  *
  34  * History:
  35  *
  36  * Mar. 2000 - 15.12.2000:  (0.0.0 - 0.2.0)
  37  *     Several alpha drivers and the first beta.
  38  *
  39  * Since Dec. 2000:  (0.2.1) or (v2.1)
  40  *     Code changes or updates by Dwaine Garden and every other person.
  41  *
  42  *     Added: New Hauppauge TV device  Vendor  ID: 0x0573
  43  *                                     Product ID: 0x4D01
  44  *            (Thanks to Giovanni Garberoglio)
  45  *
  46  *     Added: UK Hauppauge WinTV-USB   Vendor  ID: 0x0573
  47  *                                     Product ID: 0x4D02
  48  *            (Thanks to Derek Freeman-Jones)
  49  *
  50  * Feb, 2001 - Apr 08, 2001:  (0.3.0)
  51  *     - Some fixes. Driver is now more stable.
  52  *     - Scratch is organized as ring-buffer now for better performance
  53  *     - DGA (overlay) is now supported.
  54  *       !!!!Danger!!!! Clipping is not yet implemented. Your system will
  55  *       crash if your video window leaves the screen!!!
  56  *     - Max. Framesize is set to 320x240. There isn't more memory on the
  57  *       nt1003 video device for the FIFO.
  58  *     - Supported video palettes: RGB565, RGB555, RGB24, RGB32
  59  *
  60  *
  61  * Apr 15, 2001:  (0.3.1-test...)
  62  *     - Clipping is implemented
  63  *     - NTSC is now coloured (Thanks to Dwaine Garden)
  64  *     - Added SECAM colour detection in saa7111-new
  65  *     - Added: French Hauppauge WinTV USB  Vendor ID: 0x0573
  66  *                                          Product ID: 0x4D03
  67  *              (Thanks to Julius Hrivnac)
  68  *     - Added: US Hauppauge WINTV USB  Vendor ID: 0x0573
  69  *                                      Product ID: 0x4D00
  70  *              (Thanks to  Derrick J Brashear)
  71  *     - Changes for adding new devices. There's now a table in usbvision.h.
  72  *       Adding your devices data to the usbvision_device_data table is all
  73  *       you need to add a new device.
  74  *
  75  * May 11, 2001: (0.3.2-test...) (Thanks to Derek Freeman-Jones)
  76  *     - Support YUV422 raw format for people with hardware scaling.
  77  *     - Only power on the device when opened (use option PowerOnAtOpen=0 to disable it).
  78  *     - Turn off audio so we can listen to Line In.
  79  *
  80  * July 5, 2001 - (Patch the driver to run with Kernel 2.4.6)
  81  *     - Fixed a problem with the number of parameters passed to video_register_device.
  82  *
  83  * July 6, 2001 - Added: HAUPPAUGE WINTV-USB FM USA Vendor  ID: 0x0573
  84  *                                                      Product ID: 0x4D10
  85  *       (Thanks to Braddock Gaskill)
  86  *                Added: USBGear USBG-V1 resp. HAMA USB
  87  *                                      Vendor  ID: 0x0573
  88  *                                      Product ID: 0x0003
  89  *       (Thanks to Bradley A. Singletary and Juergen Weigert)
  90  *
  91  * Jan 24, 2002 - (0.3.3-test...)
  92  *     - Moved all global variables that are device specific the usb_usbvision struct
  93  *     - Fixed the 64x48 unchangable image in xawtv when starting it with overlay
  94  *     - Add VideoNorm and TunerType to the usb_device_data table
  95  *     - Checked the audio channels and mute for HAUPPAUGE WinTV USB FM
  96  *     - Implemented the power on when opening the device. But some software opens
  97  *       the device several times when starting. So the i2c parts are just registered
  98  *       by an open, when they become deregistered by the next close. You can speed
  99  *       up tuner detection, when adding "options tuner addr=your_addr" to /etc/modules.conf
 100  *     - Begin to resize the frame in width and height. So it will be possible to watch i.e.
 101  *       384x288 pixels at 23 fps.
 102  *
 103  * Feb 10, 2002
 104  *     - Added radio device
 105  *
 106  *
 107  * Jul 30, 2002 - (Thanks Cameron Maxwell)
 108  *     - Changes to usbvision.h --fixed usbvision device data structure, incorrectly had (0x0573, 0x4d21) for WinTV-USB II, should be 0x4d20.
 109  *     - Changes for device WinTV-USB II (0x0573. 0x4D21).  It does not have a FM tuner.
 110  *     - Added the real device HAUPPAUGE WINTV-USB II (PAL) to the device structure in usbvision.h.
 111  *     - Changes to saa7113-new, the video is 8 bit data for the Phillips SAA7113 not 16bit like SAA7111.
 112  *     - Tuned lots of setup registers for the Phillips SAA7113 video chipset.
 113  *     - Changes to the supplied makefile. (Dwaine Garden) Still needs to be fixed so it will compile modules on different distrubutions.
 114  *
 115  *
 116  * Aug 10, 2002 - (Thanks Mike Klinke)
 117  *     - Changes to usbvision.txt -- Fixed instructions on the location to copy the contents of the tgz file.
 118  *     - 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.
 119  *
 120  * Aug 12, 2002 - Dwaine Garden
 121  *     - Added the ability to read the NT100x chip for the MaxISOPacketLength and USB Bandwidth
 122  *       Setting of the video device.
 123  *     - Adjustments to the SAA7113H code for proper video output.
 124  *     - Changes to usbvision.h, so all the devices with FM tuners are working.
 125  *
 126  * Feb 10, 2003 - Joerg Heckenbach
 127  *     - fixed endian bug for Motorola PPC
 128  *
 129  * Feb 13, 2003 - Joerg Heckenbach
 130  *     - fixed Vin_Reg setting and presetting from usbvision_device_data()
 131  *
 132  * Apr 19, 2003 - Dwaine Garden
 133  *     - Fixed compiling errors under RedHat v9.0. from uvirt_to_kva and usbvision_mmap. (Thanks Cameron Maxwell)
 134  *     - Changed pte_offset to pte_offset_kernel.
 135  *     - Changed remap_page_range and added additional parameter to function.
 136  *     - Change setup parameters for the D-Link V100 USB device
 137  *     - Added a new device to the usbvision driver.  Pinnacle Studio PCTV USB (PAL) 0x2304 0x0110
 138  *     - Screwed up the sourceforge.net cvs respository!  8*)
 139  *
 140  * Apr 22, 2002 - Dwaine Garden
 141  *     - Added a new device to the usbvision driver. Dazzle DVC-80 (PAL) 0x07d0 0x0004. (Thanks Carl Anderson)
 142  *     - Changes to some of the comments.
 143  *
 144  * June 06, 2002 - Ivan, Dwaine Garden
 145  *     - Ivan updates for fine tuning device parameters without driver recompiling. (Ivan)
 146  *     - Changes to some of the comments. (Dwaine Garden)
 147  *     - Changes to the makefile - Better CPU settings. (Ivan)
 148  *     - Changes to device Hauppauge WinTv-USB III (PAL) FM Model 568 - Fine tuning parameters (Ivan)
 149  *
 150  *
 151  * Oct 16, 2003 - 0.9.0 - Joerg Heckenbach
 152  *     - Implementation of the first part of the decompression algorithm for intra frames.
 153  *       The resolution has to be 320x240. A dynamic adaption of compression deepth is
 154  *       missing yet.
 155  *
 156  * Oct 22, 2003 - 0.9.1 - Joerg Heckenbach
 157  *     - Implementation of the decompression algorithm for inter frames.
 158  *       The resolution still has to be 320x240.
 159  *
 160  * Nov 2003 - Feb 2004 - 0.9.2 to 0.9.3 - Joerg Heckenbach
 161  *     - Implement last unknown compressed block type. But color is still noisy.
 162  *     - Finding criteria for adaptive compression adjustment.
 163  *     - Porting to 2.6 kernels, but still working under 2.4
 164  *
 165  * Feb 04, 2004 - 0.9.4 Joerg Heckenbach
 166  *     - Found bug in color decompression. Color is OK now.
 167  *
 168  * Feb 09, 2004 - 0.9.5 Joerg Heckenbach
 169  *     - Add auto-recognition of chip type NT1003 or NT1004.
 170  *     - Add adaptive compression adjustment.
 171  *     - Patched saa7113 multiplexer switching (Thanks to Orlando F.S. Bordoni)
 172  *
 173  * Feb 24, 2004 - 0.9.6 Joerg Heckenbach
 174  *     - Add a timer to wait before poweroff at close, to save start time in
 175  *       some video applications
 176  *
 177  * Mar 4, 2004 - 0.9.6 Dwaine Garden
 178  *     - Added device Global Village GV-007 (NTSC) to usbvision.h (Thanks to Abe Skolnik)
 179  *     - Forgot to add this device to the driver. 8*)
 180  *
 181  * June 2, 2004 - 0.9.6 Dwaine Garden
 182  *     - Fixed sourceforge.net cvs repository.
 183  *     - 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.
 184  *     - Added device Hauppauge WinTv-USB III (PAL) FM Model 597 to usbvision.h
 185  *
 186  * July 1, 2004 -0.9.6 Dwaine Garden
 187  *     - Patch was submitted by Hal Finkel to fix the problem with the tuner not working under kernel 2.6.7.
 188  *     - Thanks Hal.....
 189  *
 190  * July 30, 2004 - 0.9.6 Dwaine Garden
 191  *     - Patch was submitted by Tobias Diaz to fix Model ID mismatch in usbvision.h.
 192  *     - Thanks.....
 193  *
 194  * August 12, 2004 - 0.9.6 Dwaine Garden
 195  *     - 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!
 196  *     - Added new device "Camtel Technology Corp TVB330-USB FM".
 197  *     - Sourceforge.net CVS has been updated with all the changes.
 198  *
 199  * August 20, 2004 - 0.9.7 Dwaine Garden
 200  *     - Added Device "Hauppauge USB Live Model 600"
 201  *     - 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.
 202  *     - Sourceforge.net CVS has been updated with all the changes.
 203  *     - Clean up the driver.
 204  *
 205  * September 13, 2004 - 0.9.8 Dwaine Garden
 206  *     - 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.
 207  *     - 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.
 208  *     - Removed some commented out code.  Clean up.
 209  *     - Tried to fix up the annoying empty directories in the sourceforge.net cvs.   Fuck it up again.  8*(
 210  *
 211  * November 15, 2004 - 0.9.8 Dwaine Garden
 212  *     - Release new tar - 0.9.8 on sourceforge.net
 213  *     - Added some new devices to usbvision.h WinTV USB Model 602 40201 Rev B282, Hauppague WinTV USB Model 602 40201 Rev B285
 214  *     - Added better compatibility for 2.6.x kernels.
 215  *     - Hardware full screen scaling in grabdisplay mode.
 216  *     - Better support for sysfs.  More code to follow for both video device and radio device. Device information is located at /sys/class/video4linux/video0
 217  *     - Added module_param so loaded module parameters are displayed in sysfs.  Driver parameters should show up in /sys/module/usbvision
 218  *     - Adjusted the SAA7111 registers to match the 2.6.x kernel SAA7111 code. Thanks to the person which helped test.
 219  *     - Changed to wait_event_interruptible. For all the people running Fedora 2.
 220  *     - Added some screenshots of actual video captures on sourceforge.net.
 221  *
 222  * November 24, 2004 - 0.9.8.1cvs Dwaine Garden
 223  *     - Added patch to check for palette and format in VIDIOCSPICT.  Helix Producer should work fine with the driver now.  Thanks Jason Simpson
 224  *     - Two device description changes and two additions for the maintainer of usb.ids.
 225  *
 226  * December 2, 2004 - 0.9.8.1cvs Dwaine Garden
 227  *     - Added patch for YUV420P and YUV422P video output.  Thanks to Alex Smith.
 228  *     - Better support for mythtv.
 229  *
 230  * January 2, 2005 - 0.9.8.1cvs Dwaine Garden
 231  *     - Setup that you can specify which device is used for video.  Default is auto detect next available device number eg.  /dev/videoX
 232  *     - Setup that you can specify which device is used for radio.  Default is auto detect next available device number eg.  /dev/radioX
 233  *     - usb_unlink_urb() is deprecated for synchronous unlinks.  Using usb_kill_urb instead.
 234  *     - usbvision_kvirt_to_pa is deprecated.  Removed.
 235  *     - Changes are related to kernel changes for 2.6.10. (Fedora 4)
 236  *
 237  * February 2, 2005 - 0.9.8.1cvs Dwaine Garden
 238  *     - Added a new device to usbvision.h Dazzle DVC 50.  Thanks to Luiz S.
 239  *
 240  * March 29, 2005 - 0.9.8.1cvs Dwaine Garden
 241  *     - Fixed compile error with saa7113 under kernels 2.6.11+
 242  *     - Added module parameter to help people with Black and White output with using s-video input.  Some cables and input device are wired differently.
 243  *     - Removed the .id from the i2c usbvision template.  There was a change to the i2c with kernels 2.6.11+.
 244  *
 245  * April 9, 2005 - 0.9.8.1cvs Dwaine Garden
 246  *     - 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.
 247  *       If your device experiences Black and White images with the S-Video Input.  Set this parameter to 1 when loading the module.
 248  *     - Replaced the wrong 2.6 readme file.  I lost the right version.  Someone sent me the right version by e-mail.  Thanks.
 249  *     - Released new module version on sourceforge.net.  So everyone can enjoy all the fixes and additional device support.
 250  *
 251  * April 20, 2005 - 0.9.8.2cvs Dwaine Garden
 252  *     - Release lock in usbvision_v4l_read_done.  -Thanks to nplanel for the patch.
 253  *     - Additional comments to the driver.
 254  *     - Fixed some spelling mistakes.  8*)
 255  *
 256  * April 23, 2005 - 0.9.8.2cvs Joerg Heckenbach
 257  *     - Found bug in usbvision line counting. Now there should be no spurious lines in the image any longer.
 258  *     - Swapped usbvision_register_video and usbvision_configure_video to fix problem with PowerOnAtOpen=0.
 259  *       Thanks to Erwan Velu
 260  *
 261  * April 26, 2005 - 0.9.8.2cvs Joerg Heckenbach
 262  *     - Fixed problem with rmmod module and oppses. Replaced vfree(usbvision->overlay_base) with iounmap(usbvision->overlay_base).
 263  *     - Added function usb_get_dev(dev) and ; To help with unloading the module multiple times without crashing.
 264  *       (Keep the reference count in kobjects correct)
 265  *
 266  * June 14, 2005 - 0.9.8.2cvs Dwaine
 267  *     - Missed a change in saa7113.c for checking kernel version.  Added conditional if's.
 268  *
 269  * June 15, 2005 - 0.9.8.2cvs Dwaine
 270  *     - Added new device WinTV device VendorId 0573 and ProductId 4d29.
 271  *     - Hacked some support for newer NT1005 devices.  This devices only seem to have one configuration, not multiple configurations like the NT1004.
 272  *
 273  * June 29, 2005 - 0.9.8.2cvs Dwaine
 274  *     - Added new device WinTV device VendorId 0573 and ProductId 4d37.
 275  *     - Because of the first empty entry in usbvision_table, modutils failed to create the necessary entries for modules.usbmap.
 276  *       This means hotplug won't work for usbvision.  Thanks to Gary Ng.
 277  *     - Sent an e-mail to the maintainer of usb.ids.  New devices identified need to be added.
 278  *     - Fixed compile error with saa7113 under kernel 2.6.12.
 279  *
 280  * July 6, 2005 - 0.9.8.2cvs Dwaine
 281  *     - Patch submitted by Gary Ng for two additional procfs entries.  Device Input and Frequency setting.
 282  *
 283  * July 12, 2005 - 0.9.8.2cvs Dwaine
 284  *     - New tuner identified for some devices it's called TCL_MFPE05.  This tuner uses the same API as tuner 38 in tuner.c.
 285  *     - Thanks to lynx31 for contacting Hauppage and asking them.
 286  *     - I have no clue as to which devices use this new tuner, so people will have to contact me and tell me.
 287  *
 288  * July 21, 2005 - 0.9.8.2cvs Dwaine
 289  *     - Patched usbvision.c with missing ifdef kernversion statement so the module will compile with older kernels and v4l.
 290  *     - Thanks to cipe007......
 291  *
 292  * May 19, 2006 - 0.9.8.3cvs Dwaine
 293  *     - Patched usbvision.c and i2c-algo.c so they will compile with kernel 2.6.16
 294  *     - Adjust device "Pinnacle Studio PCTV USB (PAL) FM" values in usbvision.h
 295  *
 296  * May 24, 2006 - 0.9.8.3cvs Dwaine
 297  *     -Pinnacle Studio PCTV USB (NTSC) FM uses saa7111, not saa7113 like first thought.
 298  *     -Updated usbvision.h
 299  *
 300  * Aug 15, 2006 - 0.9.8.3cvs Dwaine
 301  *     -Added saa711x module into cvs, since the newer saa7115 module in newer kernels is v4l2.  The usbvision driver is only v4l.
 302  *     -Updated makefile to put compiled modules into correct location.
 303  *
 304  * Aug 21, 2006 - 0.9.8.3cvs Dwaine
 305  *     -Changed number of bytes for i2c write to 4 as per the NT100X spec sheet.  Thanks to Merlum for finding it.
 306  *     -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.
 307  *     -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*)
 308  *
 309  * Aug 27, 2006 - 0.9.8.3cvs Dwaine
 310  *     -Changed ifdef statement so the usbvision driver will compile with kernels at 2.6.12.
 311  *     -Updated readme files for new updated tuner list for v4l devices.
 312  *
 313  *
 314  *
 315  * TODO:
 316  *     - use submit_urb for all setup packets
 317  *     - Fix memory settings for nt1004. It is 4 times as big as the
 318  *       nt1003 memory.
 319  *     - Add audio on endpoint 3 for nt1004 chip.  Seems impossible, needs a codec interface.  Which one?
 320  *     - Clean up the driver.
 321  *     - optimization for performance.
 322  *     - Add Videotext capability (VBI).  Working on it.....
 323  *     - Check audio for other devices
 324  *     - Add v4l2 interface
 325  *
 326  */
 327
 328 #include <linux/kernel.h>
 329 #include <linux/sched.h>
 330 #include <linux/list.h>
 331 #include <linux/timer.h>
 332 #include <linux/slab.h>
 333 #include <linux/mm.h>
 334 #include <linux/utsname.h>
 335 #include <linux/highmem.h>
 336 #include <linux/smp_lock.h>
 337 #include <linux/videodev.h>
 338 #include <linux/vmalloc.h>
 339 #include <linux/module.h>
 340 #include <linux/init.h>
 341 #include <linux/spinlock.h>
 342 #include <asm/io.h>
 343 #include <linux/videodev2.h>
 344 #include <linux/video_decoder.h>
 345 #include <linux/i2c.h>
 346
 347 #define USBVISION_DRIVER_VERSION_MAJOR 0
 348 #define USBVISION_DRIVER_VERSION_MINOR 8
 349 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 0
 350
 351 #define USBVISION_VERSION __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL) " " USBVISION_DRIVER_VERSION_COMMENT
 352 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
 353
 354 #include <media/saa7115.h>
 355 #include <media/v4l2-common.h>
 356 #include <media/tuner.h>
 357 #include <media/audiochip.h>
 358
 359         #include <linux/moduleparam.h>
 360         #include <linux/workqueue.h>
 361
 362 #ifdef CONFIG_KMOD
 363 #include <linux/kmod.h>
 364 #endif
 365
 366 #include "usbvision.h"
 367
 368 #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__
 369 #define EMAIL "joerg@heckenbach-aw.de"
 370 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, Dwaine Garden <DwaineGarden@rogers.com>"
 371 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
 372 #define DRIVER_LICENSE "GPL"
 373 #define DRIVER_ALIAS "USBVision"
 374
 375 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
 376
 377
 378 #define USBVISION_DEBUG         /* Turn on debug messages */
 379
 380 #ifdef USBVISION_DEBUG
 381         #define PDEBUG(level, fmt, args...) \
 382                 if (debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
 383 #else
 384         #define PDEBUG(level, fmt, args...) do {} while(0)
 385 #endif
 386
 387 #define DBG_IOCTL       1<<3
 388 #define DBG_IO          1<<4
 389 #define DBG_RIO         1<<5
 390 #define DBG_HEADER      1<<7
 391 #define DBG_PROBE       1<<8
 392 #define DBG_IRQ         1<<9
 393 #define DBG_ISOC        1<<10
 394 #define DBG_PARSE       1<<11
 395 #define DBG_SCRATCH     1<<12
 396 #define DBG_FUNC        1<<13
 397 #define DBG_I2C         1<<14
 398
 399 #define DEBUG(x...)                                                             /* General Debug */
 400 #define IODEBUG(x...)                                                           /* Debug IO */
 401 #define OVDEBUG(x...)                                                           /* Debug overlay */
 402 #define MDEBUG(x...)                                                            /* Debug memory management */
 403
 404 //String operations
 405 #define rmspace(str)    while(*str==' ') str++;
 406 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 407
 408
 409 static int usbvision_nr = 0;                    // sequential number of usbvision device
 410 static unsigned long usbvision_timestamp = 0;           // timestamp in jiffies of a hundred frame
 411 static unsigned long usbvision_counter = 0;             // frame counter
 412
 413 static const int max_imgwidth = MAX_FRAME_WIDTH;
 414 static const int max_imgheight = MAX_FRAME_HEIGHT;
 415 static const int min_imgwidth = MIN_FRAME_WIDTH;
 416 static const int min_imgheight = MIN_FRAME_HEIGHT;
 417
 418 #define FRAMERATE_MIN   0
 419 #define FRAMERATE_MAX   31
 420
 421
 422 enum {
 423         ISOC_MODE_YUV422 = 0x03,
 424         ISOC_MODE_YUV420 = 0x14,
 425         ISOC_MODE_COMPRESS = 0x60,
 426 };
 427
 428 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 429         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 430         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 431         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 432         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 433         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 434         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 435         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 436         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 437 };
 438
 439 /* supported tv norms */
 440 static struct usbvision_tvnorm tvnorms[] = {
 441         {
 442                 .name = "PAL",
 443                 .id = V4L2_STD_PAL,
 444         }, {
 445                 .name = "NTSC",
 446                 .id = V4L2_STD_NTSC,
 447         }, {
 448                  .name = "SECAM",
 449                  .id = V4L2_STD_SECAM,
 450         }, {
 451                 .name = "PAL-M",
 452                 .id = V4L2_STD_PAL_M,
 453         }
 454 };
 455
 456 #define TVNORMS ARRAY_SIZE(tvnorms)
 457
 458
 459 /*
 460  * The value of 'scratch_buf_size' affects quality of the picture
 461  * in many ways. Shorter buffers may cause loss of data when client
 462  * is too slow. Larger buffers are memory-consuming and take longer
 463  * to work with. This setting can be adjusted, but the default value
 464  * should be OK for most desktop users.
 465  */
 466 #define DEFAULT_SCRATCH_BUF_SIZE        (0x20000)               // 128kB memory scratch buffer
 467 static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE;
 468
 469 // Function prototypes
 470 static int usbvision_restart_isoc(struct usb_usbvision *usbvision);
 471 static int usbvision_begin_streaming(struct usb_usbvision *usbvision);
 472 static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
 473 static int usbvision_i2c_write(void *data, unsigned char addr, char *buf, short len);
 474 static int usbvision_i2c_read(void *data, unsigned char addr, char *buf, short len);
 475 static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
 476 static int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, unsigned char value);
 477 static int usbvision_request_intra (struct usb_usbvision *usbvision);
 478 static int usbvision_unrequest_intra (struct usb_usbvision *usbvision);
 479 static int usbvision_adjust_compression (struct usb_usbvision *usbvision);
 480 static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision);
 481 static void usbvision_release(struct usb_usbvision *usbvision);
 482 static int usbvision_set_input(struct usb_usbvision *usbvision);
 483 static int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
 484 static void usbvision_empty_framequeues(struct usb_usbvision *dev);
 485 static int usbvision_stream_interrupt(struct usb_usbvision *dev);
 486 static void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd, void *arg);
 487
 488
 489 // Bit flags (options)
 490 #define FLAGS_RETRY_VIDIOCSYNC          (1 << 0)
 491 #define FLAGS_MONOCHROME                (1 << 1)
 492 #define FLAGS_DISPLAY_HINTS             (1 << 2)
 493 #define FLAGS_OSD_STATS                 (1 << 3)
 494 #define FLAGS_FORCE_TESTPATTERN         (1 << 4)
 495 #define FLAGS_SEPARATE_FRAMES           (1 << 5)
 496 #define FLAGS_CLEAN_FRAMES              (1 << 6)
 497
 498 // Default initalization of device driver parameters
 499 static int flags = 0;                                   // Set the default Overlay Display mode of the device driver
 500 static int debug = 0;                                   // Set the default Debug Mode of the device driver
 501 static int isocMode = ISOC_MODE_COMPRESS;               // Set the default format for ISOC endpoint
 502 static int adjustCompression = 1;                       // Set the compression to be adaptive
 503 static int dga = 1;                                     // Set the default Direct Graphic Access
 504 static int PowerOnAtOpen = 1;                           // Set the default device to power on at startup
 505 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.
 506 static int video_nr = -1;                               // Sequential Number of Video Device
 507 static int radio_nr = -1;                               // Sequential Number of Radio Device
 508 static int vbi_nr = -1;                                 // Sequential Number of VBI Device
 509 static char *CustomDevice=NULL;                         // Set as nothing....
 510
 511 // Grab parameters for the device driver
 512
 513 #if defined(module_param)                               // Showing parameters under SYSFS
 514 module_param(flags, int, 0444);
 515 module_param(debug, int, 0444);
 516 module_param(isocMode, int, 0444);
 517 module_param(adjustCompression, int, 0444);
 518 module_param(dga, int, 0444);
 519 module_param(PowerOnAtOpen, int, 0444);
 520 module_param(SwitchSVideoInput, int, 0444);
 521 module_param(video_nr, int, 0444);
 522 module_param(radio_nr, int, 0444);
 523 module_param(vbi_nr, int, 0444);
 524 module_param(CustomDevice, charp, 0444);
 525 #else                                                   // Old Style
 526 MODULE_PARM(flags, "i");                                // Grab the Overlay Display mode of the device driver
 527 MODULE_PARM(debug, "i");                                // Grab the Debug Mode of the device driver
 528 MODULE_PARM(isocMode, "i");                             // Grab the video format of the video device
 529 MODULE_PARM(adjustCompression, "i");                    // Grab the compression to be adaptive
 530 MODULE_PARM(dga, "i");                                  // Grab the Direct Graphic Access
 531 MODULE_PARM(PowerOnAtOpen, "i");                        // Grab the device to power on at startup
 532 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.
 533 MODULE_PARM(video_nr, "i");                             // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
 534 MODULE_PARM(radio_nr, "i");                             // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
 535 MODULE_PARM(vbi_nr, "i");                               // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
 536 MODULE_PARM(CustomDevice, "s");                         // .... CustomDevice
 537 #endif
 538
 539 MODULE_PARM_DESC(flags, " Set the default Overlay Display mode of the device driver.  Default: 0 (Off)");
 540 MODULE_PARM_DESC(debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 541 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 542 MODULE_PARM_DESC(adjustCompression, " Set the ADPCM compression for the device.  Default: 1 (On)");
 543 MODULE_PARM_DESC(dga, " Set the Direct Graphic Access for the device.  Default: 1 (On)");
 544 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 545 MODULE_PARM_DESC(SwitchSVideoInput, " Set the S-Video input.  Some cables and input device are wired differently. Default: 0 (Off)");
 546 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 547 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 548 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 549 MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device.  Default: null");
 550
 551
 552 // Misc stuff
 553 MODULE_AUTHOR(DRIVER_AUTHOR);
 554 MODULE_DESCRIPTION(DRIVER_DESC);
 555 MODULE_LICENSE(DRIVER_LICENSE);
 556         MODULE_VERSION(DRIVER_VERSION);
 557         MODULE_ALIAS(DRIVER_ALIAS);
 558
 559 #ifdef MODULE
 560 static unsigned int autoload = 1;
 561 #else
 562 static unsigned int autoload = 0;
 563 #endif
 564
 565
 566 /****************************************************************************************/
 567 /* SYSFS Code - Copied from the stv680.c usb module.                                    */
 568 /* Device information is located at /sys/class/video4linux/video0                       */
 569 /* Device parameters information is located at /sys/module/usbvision                    */
 570 /* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
 571 /****************************************************************************************/
 572
 573
 574 #define YES_NO(x) ((x) ? "Yes" : "No")
 575
 576 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 577 {
 578         struct video_device *vdev = to_video_device(cd);
 579         return video_get_drvdata(vdev);
 580 }
 581
 582 static ssize_t show_version(struct class_device *cd, char *buf)
 583 {
 584         return sprintf(buf, "%s\n", DRIVER_VERSION);
 585 }
 586 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 587
 588 static ssize_t show_model(struct class_device *class_dev, char *buf)
 589 {
 590         struct video_device *vdev = to_video_device(class_dev);
 591         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 592         return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
 593 }
 594 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 595
 596 static ssize_t show_hue(struct class_device *class_dev, char *buf)
 597 {
 598         struct video_device *vdev = to_video_device(class_dev);
 599         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 600         return sprintf(buf, "%d\n", usbvision->hue >> 8);
 601 }
 602 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 603
 604 static ssize_t show_contrast(struct class_device *class_dev, char *buf)
 605 {
 606         struct video_device *vdev = to_video_device(class_dev);
 607         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 608         return sprintf(buf, "%d\n", usbvision->contrast >> 8);
 609 }
 610 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 611
 612 static ssize_t show_brightness(struct class_device *class_dev, char *buf)
 613 {
 614         struct video_device *vdev = to_video_device(class_dev);
 615         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 616         return sprintf(buf, "%d\n", usbvision->brightness >> 8);
 617 }
 618 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 619
 620 static ssize_t show_saturation(struct class_device *class_dev, char *buf)
 621 {
 622         struct video_device *vdev = to_video_device(class_dev);
 623         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 624         return sprintf(buf, "%d\n", usbvision->saturation >> 8);
 625 }
 626 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 627
 628 static ssize_t show_streaming(struct class_device *class_dev, char *buf)
 629 {
 630         struct video_device *vdev = to_video_device(class_dev);
 631         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 632         return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
 633 }
 634 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 635
 636 static ssize_t show_overlay(struct class_device *class_dev, char *buf)
 637 {
 638         struct video_device *vdev = to_video_device(class_dev);
 639         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 640         return sprintf(buf, "%s\n", YES_NO(usbvision->overlay));
 641 }
 642 static CLASS_DEVICE_ATTR(overlay, S_IRUGO, show_overlay, NULL);
 643
 644 static ssize_t show_compression(struct class_device *class_dev, char *buf)
 645 {
 646         struct video_device *vdev = to_video_device(class_dev);
 647         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 648         return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 649 }
 650 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 651
 652 static ssize_t show_device_bridge(struct class_device *class_dev, char *buf)
 653 {
 654         struct video_device *vdev = to_video_device(class_dev);
 655         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 656         return sprintf(buf, "%d\n", usbvision->bridgeType);
 657 }
 658 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 659
 660 static void usbvision_create_sysfs(struct video_device *vdev)
 661 {
 662         int res;
 663         if (vdev) {
 664                 res=video_device_create_file(vdev, &class_device_attr_version);
 665                 res=video_device_create_file(vdev, &class_device_attr_model);
 666                 res=video_device_create_file(vdev, &class_device_attr_hue);
 667                 res=video_device_create_file(vdev, &class_device_attr_contrast);
 668                 res=video_device_create_file(vdev, &class_device_attr_brightness);
 669                 res=video_device_create_file(vdev, &class_device_attr_saturation);
 670                 res=video_device_create_file(vdev, &class_device_attr_streaming);
 671                 res=video_device_create_file(vdev, &class_device_attr_overlay);
 672                 res=video_device_create_file(vdev, &class_device_attr_compression);
 673                 res=video_device_create_file(vdev, &class_device_attr_bridge);
 674         }
 675 }
 676
 677 static void usbvision_remove_sysfs(struct video_device *vdev)
 678 {
 679         if (vdev) {
 680                 video_device_remove_file(vdev, &class_device_attr_version);
 681                 video_device_remove_file(vdev, &class_device_attr_model);
 682                 video_device_remove_file(vdev, &class_device_attr_hue);
 683                 video_device_remove_file(vdev, &class_device_attr_contrast);
 684                 video_device_remove_file(vdev, &class_device_attr_brightness);
 685                 video_device_remove_file(vdev, &class_device_attr_saturation);
 686                 video_device_remove_file(vdev, &class_device_attr_streaming);
 687                 video_device_remove_file(vdev, &class_device_attr_overlay);
 688                 video_device_remove_file(vdev, &class_device_attr_compression);
 689                 video_device_remove_file(vdev, &class_device_attr_bridge);
 690         }
 691 }
 692
 693
 694 /*******************************/
 695 /* Memory management functions */
 696 /*******************************/
 697
 698 /*
 699  * Here we want the physical address of the memory.
 700  * This is used when initializing the contents of the area.
 701  */
 702
 703
 704 void *usbvision_rvmalloc(unsigned long size)
 705 {
 706         void *mem;
 707         unsigned long adr;
 708
 709         size = PAGE_ALIGN(size);
 710         mem = vmalloc_32(size);
 711         if (!mem)
 712                 return NULL;
 713
 714         memset(mem, 0, size); /* Clear the ram out, no junk to the user */
 715  adr = (unsigned long) mem;
 716  while (size > 0) {
 717   #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 718    mem_map_reserve(vmalloc_to_page((void *)adr));
 719   #else
 720    SetPageReserved(vmalloc_to_page((void *)adr));
 721   #endif
 722   adr += PAGE_SIZE;
 723   size -= PAGE_SIZE;
 724  }
 725
 726  return mem;
 727 }
 728
 729 void usbvision_rvfree(void *mem, unsigned long size)
 730 {
 731  unsigned long adr;
 732
 733  if (!mem)
 734   return;
 735
 736  adr = (unsigned long) mem;
 737  while ((long) size > 0) {
 738   #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 739    mem_map_unreserve(vmalloc_to_page((void *)adr));
 740   #else
 741    ClearPageReserved(vmalloc_to_page((void *)adr));
 742   #endif
 743   adr += PAGE_SIZE;
 744   size -= PAGE_SIZE;
 745  }
 746  vfree(mem);
 747 }
 748
 749
 750
 751
 752
 753
 754 #if ENABLE_HEXDUMP
 755 static void usbvision_hexdump(const unsigned char *data, int len)
 756 {
 757  char tmp[80];
 758  int i, k;
 759
 760  for (i = k = 0; len > 0; i++, len--) {
 761   if (i > 0 && (i % 16 == 0)) {
 762    printk("%s\n", tmp);
 763    k = 0;
 764   }
 765   k += sprintf(&tmp[k], "%02x ", data[i]);
 766  }
 767  if (k > 0)
 768   printk("%s\n", tmp);
 769 }
 770 #endif
 771
 772
 773 /* These procedures handle the scratch ring buffer */
 774 int scratch_len(struct usb_usbvision *usbvision)    /*This returns the amount of data actually in the buffer */
 775 {
 776         int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr;
 777         if (len < 0) {
 778                 len += scratch_buf_size;
 779         }
 780         PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len);
 781
 782         return len;
 783 }
 784
 785
 786 /* This returns the free space left in the buffer */
 787 int scratch_free(struct usb_usbvision *usbvision)
 788 {
 789         int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr;
 790         if (free <= 0) {
 791                 free += scratch_buf_size;
 792         }
 793         if (free) {
 794                 free -= 1;                                                      /* at least one byte in the buffer must */
 795                                                                                 /* left blank, otherwise there is no chance to differ between full and empty */
 796         }
 797         PDEBUG(DBG_SCRATCH, "return %d\n", free);
 798
 799         return free;
 800 }
 801
 802
 803 void *debug_memcpy(void *dest, void *src, size_t len)
 804 {
 805         printk(KERN_DEBUG "memcpy(%p, %p, %d);\n", dest, src, len);
 806         return memcpy(dest, src, len);
 807 }
 808
 809
 810 /* This puts data into the buffer */
 811 int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, int len)
 812 {
 813         int len_part;
 814
 815         if (usbvision->scratch_write_ptr + len < scratch_buf_size) {
 816                 memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len);
 817                 usbvision->scratch_write_ptr += len;
 818         }
 819         else {
 820                 len_part = scratch_buf_size - usbvision->scratch_write_ptr;
 821                 memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part);
 822                 if (len == len_part) {
 823                         usbvision->scratch_write_ptr = 0;                       /* just set write_ptr to zero */
 824                 }
 825                 else {
 826                         memcpy(usbvision->scratch, data + len_part, len - len_part);
 827                         usbvision->scratch_write_ptr = len - len_part;
 828                 }
 829         }
 830
 831         PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr);
 832
 833         return len;
 834 }
 835
 836 /* This marks the write_ptr as position of new frame header */
 837 void scratch_mark_header(struct usb_usbvision *usbvision)
 838 {
 839         PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr);
 840
 841         usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] =
 842                                 usbvision->scratch_write_ptr;
 843         usbvision->scratch_headermarker_write_ptr += 1;
 844         usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER;
 845 }
 846
 847 /* This gets data from the buffer at the given "ptr" position */
 848 int scratch_get_extra(struct usb_usbvision *usbvision, unsigned char *data, int *ptr, int len)
 849 {
 850         int len_part;
 851         if (*ptr + len < scratch_buf_size) {
 852                 memcpy(data, usbvision->scratch + *ptr, len);
 853                 *ptr += len;
 854         }
 855         else {
 856                 len_part = scratch_buf_size - *ptr;
 857                 memcpy(data, usbvision->scratch + *ptr, len_part);
 858                 if (len == len_part) {
 859                         *ptr = 0;                                                       /* just set the y_ptr to zero */
 860                 }
 861                 else {
 862                         memcpy(data + len_part, usbvision->scratch, len - len_part);
 863                         *ptr = len - len_part;
 864                 }
 865         }
 866
 867         PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr);
 868
 869         return len;
 870 }
 871
 872
 873 /* This sets the scratch extra read pointer */
 874 void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr, int len)
 875 {
 876         *ptr = (usbvision->scratch_read_ptr + len)%scratch_buf_size;
 877
 878         PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
 879 }
 880
 881
 882 /*This increments the scratch extra read pointer */
 883 void scratch_inc_extra_ptr(int *ptr, int len)
 884 {
 885         *ptr = (*ptr + len) % scratch_buf_size;
 886
 887         PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr);
 888 }
 889
 890
 891 /* This gets data from the buffer */
 892 int scratch_get(struct usb_usbvision *usbvision, unsigned char *data, int len)
 893 {
 894         int len_part;
 895         if (usbvision->scratch_read_ptr + len < scratch_buf_size) {
 896                 memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len);
 897                 usbvision->scratch_read_ptr += len;
 898         }
 899         else {
 900                 len_part = scratch_buf_size - usbvision->scratch_read_ptr;
 901                 memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part);
 902                 if (len == len_part) {
 903                         usbvision->scratch_read_ptr = 0;                                /* just set the read_ptr to zero */
 904                 }
 905                 else {
 906                         memcpy(data + len_part, usbvision->scratch, len - len_part);
 907                         usbvision->scratch_read_ptr = len - len_part;
 908                 }
 909         }
 910
 911         PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr);
 912
 913         return len;
 914 }
 915
 916
 917 /* This sets read pointer to next header and returns it */
 918 int scratch_get_header(struct usb_usbvision *usbvision,struct usbvision_frame_header *header)
 919 {
 920         int errCode = 0;
 921
 922         PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr);
 923
 924         while (usbvision->scratch_headermarker_write_ptr -
 925                 usbvision->scratch_headermarker_read_ptr != 0) {
 926                 usbvision->scratch_read_ptr =
 927                         usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr];
 928                 usbvision->scratch_headermarker_read_ptr += 1;
 929                 usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER;
 930                 scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH);
 931                 if ((header->magic_1 == USBVISION_MAGIC_1)
 932                          && (header->magic_2 == USBVISION_MAGIC_2)
 933                          && (header->headerLength == USBVISION_HEADER_LENGTH)) {
 934                         errCode = USBVISION_HEADER_LENGTH;
 935                         header->frameWidth  = header->frameWidthLo  + (header->frameWidthHi << 8);
 936                         header->frameHeight = header->frameHeightLo + (header->frameHeightHi << 8);
 937                         break;
 938                 }
 939         }
 940
 941         return errCode;
 942 }
 943
 944
 945 /*This removes len bytes of old data from the buffer */
 946 void scratch_rm_old(struct usb_usbvision *usbvision, int len)
 947 {
 948
 949         usbvision->scratch_read_ptr += len;
 950         usbvision->scratch_read_ptr %= scratch_buf_size;
 951         PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr);
 952 }
 953
 954
 955 /*This resets the buffer - kills all data in it too */
 956 void scratch_reset(struct usb_usbvision *usbvision)
 957 {
 958         PDEBUG(DBG_SCRATCH, "\n");
 959
 960         usbvision->scratch_read_ptr = 0;
 961         usbvision->scratch_write_ptr = 0;
 962         usbvision->scratch_headermarker_read_ptr = 0;
 963         usbvision->scratch_headermarker_write_ptr = 0;
 964         usbvision->isocstate = IsocState_NoFrame;
 965 }
 966
 967
 968
 969 /* Here comes the OVERLAY stuff */
 970
 971 /* Tell the interrupt handler what to to.  */
 972 static
 973 void usbvision_cap(struct usb_usbvision* usbvision, int on)
 974 {
 975         DEBUG(printk(KERN_DEBUG "usbvision_cap: overlay was %d, set it to %d\n", usbvision->overlay, on);)
 976
 977         if (on) {
 978                 usbvision->overlay = 1;
 979         }
 980         else {
 981                 usbvision->overlay = 0;
 982         }
 983 }
 984
 985
 986
 987
 988 /* append a new clipregion to the vector of video_clips */
 989 static
 990 void usbvision_new_clip(struct v4l2_format* vf, struct v4l2_clip* vcp, int x, int y, int w, int h)
 991 {
 992         vcp[vf->fmt.win.clipcount].c.left = x;
 993         vcp[vf->fmt.win.clipcount].c.top = y;
 994         vcp[vf->fmt.win.clipcount].c.width = w;
 995         vcp[vf->fmt.win.clipcount].c.height = h;
 996         vf->fmt.win.clipcount++;
 997 }
 998
 999
1000 #define mark_pixel(x,y)  usbvision->clipmask[((x) + (y) * MAX_FRAME_WIDTH)/32] |= 0x00000001<<((x)%32)
1001 #define clipped_pixel(index) usbvision->clipmask[(index)/32] & (0x00000001<<((index)%32))
1002
1003 static
1004 void usbvision_built_overlay(struct usb_usbvision* usbvision, int count, struct v4l2_clip *vcp)
1005 {
1006         usbvision->overlay_win = usbvision->overlay_base +
1007                 (signed int)usbvision->vid_win.fmt.win.w.left * usbvision->depth / 8 +
1008                 (signed int)usbvision->vid_win.fmt.win.w.top * usbvision->vid_buf.fmt.bytesperline;
1009
1010                 IODEBUG(printk(KERN_DEBUG "built_overlay base=%p, win=%p, bpl=%d, clips=%d, size=%dx%d\n",
1011                                         usbvision->overlay_base, usbvision->overlay_win,
1012                                         usbvision->vid_buf.fmt.bytesperline, count,
1013                                         usbvision->vid_win.fmt.win.w.width, usbvision->vid_win.fmt.win.w.height);)
1014
1015
1016         /* Add here generation of clipping mask */
1017 {
1018         int x_start, x_end, y_start, y_end;
1019         int clip_index, x, y;
1020
1021         memset(usbvision->clipmask, 0, USBVISION_CLIPMASK_SIZE);
1022
1023         OVDEBUG(printk(KERN_DEBUG "clips = %d\n", count);)
1024
1025         for(clip_index = 0; clip_index < count; clip_index++) {
1026                 OVDEBUG(printk(KERN_DEBUG "clip: %d,%d,%d,%d\n", vcp[clip_index].x,
1027                                 vcp[clip_index].y,
1028                                 vcp[clip_index].width,
1029                                 vcp[clip_index].height);)
1030
1031                 x_start = vcp[clip_index].c.left;
1032                 if(x_start >= (int)usbvision->vid_win.fmt.win.w.width) {
1033                         OVDEBUG(printk(KERN_DEBUG "x_start=%d\n", x_start);)
1034                         continue; //clipping window is right of overlay window
1035                 }
1036                 x_end   = x_start + vcp[clip_index].c.width;
1037                 if(x_end <= 0) {
1038                         OVDEBUG(printk(KERN_DEBUG "x_end=%d\n", x_end);)
1039                         continue; //clipping window is left of overlay window
1040                 }
1041
1042                 y_start = vcp[clip_index].c.top;
1043                 if(y_start >= (int)usbvision->vid_win.fmt.win.w.height) {
1044                         OVDEBUG(printk(KERN_DEBUG "y_start=%d\n", y_start);)
1045                         continue; //clipping window is below overlay window
1046                 }
1047                 y_end   = y_start + vcp[clip_index].c.height;
1048                 if(y_end <= 0) {
1049                         OVDEBUG(printk(KERN_DEBUG "y_end=%d\n", y_end);)
1050                         continue; //clipping window is above overlay window
1051                 }
1052
1053                 //clip the clipping window
1054                 if (x_start < 0) {
1055                         x_start = 0;
1056                 }
1057                 if (x_end > (int)usbvision->vid_win.fmt.win.w.width) {
1058                         x_end = (int)usbvision->vid_win.fmt.win.w.width;
1059                 }
1060                 if (y_start < 0) {
1061                         y_start = 0;
1062                 }
1063                 if (y_end > (int)usbvision->vid_win.fmt.win.w.height) {
1064                         y_end = (int)usbvision->vid_win.fmt.win.w.height;
1065                 }
1066
1067                 OVDEBUG(printk(KERN_DEBUG "clip_o: %d,%d,%d,%d\n", x_start,     y_start, x_end, y_end);)
1068
1069
1070
1071                 for(y = y_start; y < y_end; y++) {
1072                         for(x = x_start; x < x_end; x++) {
1073                                 mark_pixel(x,y);
1074                         }
1075                 }
1076         }
1077 }
1078
1079 }
1080
1081
1082
1083 void usbvision_osd_char(struct usb_usbvision *usbvision,
1084                         struct usbvision_frame *frame, int x, int y, int ch)
1085 {
1086         static const unsigned short digits[16] = {
1087                 0xF6DE,         /* 0 */
1088                 0x2492,         /* 1 */
1089                 0xE7CE,         /* 2 */
1090                 0xE79E,         /* 3 */
1091                 0xB792,         /* 4 */
1092                 0xF39E,         /* 5 */
1093                 0xF3DE,         /* 6 */
1094                 0xF492,         /* 7 */
1095                 0xF7DE,         /* 8 */
1096                 0xF79E,         /* 9 */
1097                 0x77DA,         /* a */
1098                 0xD75C,         /* b */
1099                 0xF24E,         /* c */
1100                 0xD6DC,         /* d */
1101                 0xF34E,         /* e */
1102                 0xF348          /* f */
1103         };
1104         unsigned short digit;
1105         int ix, iy;
1106
1107         if ((usbvision == NULL) || (frame == NULL))
1108                 return;
1109
1110         if (ch >= '0' && ch <= '9')
1111                 ch -= '0';
1112         else if (ch >= 'A' && ch <= 'F')
1113                 ch = 10 + (ch - 'A');
1114         else if (ch >= 'a' && ch <= 'f')
1115                 ch = 10 + (ch - 'a');
1116         else
1117                 return;
1118         digit = digits[ch];
1119
1120         for (iy = 0; iy < 5; iy++) {
1121                 for (ix = 0; ix < 3; ix++) {
1122                         if (digit & 0x8000) {
1123                         //      USBVISION_PUTPIXEL(frame, x + ix, y + iy,
1124                         //                      0xFF, 0xFF, 0xFF);
1125                         }
1126                         digit = digit << 1;
1127                 }
1128         }
1129 }
1130
1131
1132 void usbvision_osd_string(struct usb_usbvision *usbvision,
1133                           struct usbvision_frame *frame,
1134                           int x, int y, const char *str)
1135 {
1136         while (*str) {
1137                 usbvision_osd_char(usbvision, frame, x, y, *str);
1138                 str++;
1139                 x += 4;         /* 3 pixels character + 1 space */
1140         }
1141 }
1142
1143 /*
1144  * usb_usbvision_osd_stats()
1145  *
1146  * On screen display of important debugging information.
1147  *
1148  */
1149 void usbvision_osd_stats(struct usb_usbvision *usbvision,
1150                          struct usbvision_frame *frame)
1151 {
1152         const int y_diff = 8;
1153         char tmp[16];
1154         int x = 10;
1155         int y = 10;
1156
1157         sprintf(tmp, "%8x", usbvision->frame_num);
1158         usbvision_osd_string(usbvision, frame, x, y, tmp);
1159         y += y_diff;
1160
1161         sprintf(tmp, "%8lx", usbvision->isocUrbCount);
1162         usbvision_osd_string(usbvision, frame, x, y, tmp);
1163         y += y_diff;
1164
1165         sprintf(tmp, "%8lx", usbvision->urb_length);
1166         usbvision_osd_string(usbvision, frame, x, y, tmp);
1167         y += y_diff;
1168
1169         sprintf(tmp, "%8lx", usbvision->isocDataCount);
1170         usbvision_osd_string(usbvision, frame, x, y, tmp);
1171         y += y_diff;
1172
1173         sprintf(tmp, "%8lx", usbvision->header_count);
1174         usbvision_osd_string(usbvision, frame, x, y, tmp);
1175         y += y_diff;
1176
1177         sprintf(tmp, "%8lx", usbvision->scratch_ovf_count);
1178         usbvision_osd_string(usbvision, frame, x, y, tmp);
1179         y += y_diff;
1180
1181         sprintf(tmp, "%8lx", usbvision->isocSkipCount);
1182         usbvision_osd_string(usbvision, frame, x, y, tmp);
1183         y += y_diff;
1184
1185         sprintf(tmp, "%8lx", usbvision->isocErrCount);
1186         usbvision_osd_string(usbvision, frame, x, y, tmp);
1187         y += y_diff;
1188
1189         sprintf(tmp, "%8x", usbvision->saturation);
1190         usbvision_osd_string(usbvision, frame, x, y, tmp);
1191         y += y_diff;
1192
1193         sprintf(tmp, "%8x", usbvision->hue);
1194         usbvision_osd_string(usbvision, frame, x, y, tmp);
1195         y += y_diff;
1196
1197         sprintf(tmp, "%8x", usbvision->brightness >> 8);
1198         usbvision_osd_string(usbvision, frame, x, y, tmp);
1199         y += y_diff;
1200
1201         sprintf(tmp, "%8x", usbvision->contrast >> 12);
1202         usbvision_osd_string(usbvision, frame, x, y, tmp);
1203         y += y_diff;
1204
1205 }
1206
1207 /*
1208  * usbvision_testpattern()
1209  *
1210  * Procedure forms a test pattern (yellow grid on blue background).
1211  *
1212  * Parameters:
1213  * fullframe:   if TRUE then entire frame is filled, otherwise the procedure
1214  *              continues from the current scanline.
1215  * pmode        0: fill the frame with solid blue color (like on VCR or TV)
1216  *              1: Draw a colored grid
1217  *
1218  */
1219 void usbvision_testpattern(struct usb_usbvision *usbvision, int fullframe,
1220                         int pmode)
1221 {
1222         static const char proc[] = "usbvision_testpattern";
1223         struct usbvision_frame *frame;
1224         unsigned char *f;
1225         int num_cell = 0;
1226         int scan_length = 0;
1227         static int num_pass = 0;
1228
1229         if (usbvision == NULL) {
1230                 printk(KERN_ERR "%s: usbvision == NULL\n", proc);
1231                 return;
1232         }
1233         if (usbvision->curFrame == NULL) {
1234                 printk(KERN_ERR "%s: usbvision->curFrame is NULL.\n", proc);
1235                 return;
1236         }
1237
1238         /* Grab the current frame */
1239         frame = usbvision->curFrame;
1240
1241         /* Optionally start at the beginning */
1242         if (fullframe) {
1243                 frame->curline = 0;
1244                 frame->scanlength = 0;
1245         }
1246
1247         /* Form every scan line */
1248         for (; frame->curline < frame->frmheight; frame->curline++) {
1249                 int i;
1250
1251                 f = frame->data + (usbvision->curwidth * 3 * frame->curline);
1252                 for (i = 0; i < usbvision->curwidth; i++) {
1253                         unsigned char cb = 0x80;
1254                         unsigned char cg = 0;
1255                         unsigned char cr = 0;
1256
1257                         if (pmode == 1) {
1258                                 if (frame->curline % 32 == 0)
1259                                         cb = 0, cg = cr = 0xFF;
1260                                 else if (i % 32 == 0) {
1261                                         if (frame->curline % 32 == 1)
1262                                                 num_cell++;
1263                                         cb = 0, cg = cr = 0xFF;
1264                                 } else {
1265                                         cb =
1266                                             ((num_cell * 7) +
1267                                              num_pass) & 0xFF;
1268                                         cg =
1269                                             ((num_cell * 5) +
1270                                              num_pass * 2) & 0xFF;
1271                                         cr =
1272                                             ((num_cell * 3) +
1273                                              num_pass * 3) & 0xFF;
1274                                 }
1275                         } else {
1276                                 /* Just the blue screen */
1277                         }
1278
1279                         *f++ = cb;
1280                         *f++ = cg;
1281                         *f++ = cr;
1282                         scan_length += 3;
1283                 }
1284         }
1285
1286         frame->grabstate = FrameState_Done;
1287         frame->scanlength += scan_length;
1288         ++num_pass;
1289
1290         /* We do this unconditionally, regardless of FLAGS_OSD_STATS */
1291         usbvision_osd_stats(usbvision, frame);
1292 }
1293
1294 /*
1295  * Here comes the data parsing stuff that is run as interrupt
1296  */
1297
1298 /*
1299  * usbvision_find_header()
1300  *
1301  * Locate one of supported header markers in the scratch buffer.
1302  */
1303 static enum ParseState usbvision_find_header(struct usb_usbvision *usbvision)
1304 {
1305         struct usbvision_frame *frame;
1306         int foundHeader = 0;
1307
1308         if (usbvision->overlay) {
1309                 frame = &usbvision->overlay_frame;
1310         }
1311         else {
1312                 frame = usbvision->curFrame;
1313         }
1314
1315         while (scratch_get_header(usbvision, &frame->isocHeader) == USBVISION_HEADER_LENGTH) {
1316                 // found header in scratch
1317                 PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u",
1318                                 frame->isocHeader.magic_2,
1319                                 frame->isocHeader.magic_1,
1320                                 frame->isocHeader.headerLength,
1321                                 frame->isocHeader.frameNum,
1322                                 frame->isocHeader.framePhase,
1323                                 frame->isocHeader.frameLatency,
1324                                 frame->isocHeader.dataFormat,
1325                                 frame->isocHeader.formatParam,
1326                                 frame->isocHeader.frameWidth,
1327                                 frame->isocHeader.frameHeight);
1328
1329                 if (usbvision->requestIntra) {
1330                         if (frame->isocHeader.formatParam & 0x80) {
1331                                 foundHeader = 1;
1332                                 usbvision->lastIsocFrameNum = -1; // do not check for lost frames this time
1333                                 usbvision_unrequest_intra(usbvision);
1334                                 break;
1335                         }
1336                 }
1337                 else {
1338                         foundHeader = 1;
1339                         break;
1340                 }
1341         }
1342
1343         if (foundHeader) {
1344                 frame->frmwidth = frame->isocHeader.frameWidth * usbvision->stretch_width;
1345                 frame->frmheight = frame->isocHeader.frameHeight * usbvision->stretch_height;
1346                 frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth)>> 3;
1347         }
1348         else { // no header found
1349                 PDEBUG(DBG_HEADER, "skipping scratch data, no header");
1350                 scratch_reset(usbvision);
1351                 return ParseState_EndParse;
1352         }
1353
1354         // found header
1355         if (frame->isocHeader.dataFormat==ISOC_MODE_COMPRESS) {
1356                 //check isocHeader.frameNum for lost frames
1357                 if (usbvision->lastIsocFrameNum >= 0) {
1358                         if (((usbvision->lastIsocFrameNum + 1) % 32) != frame->isocHeader.frameNum) {
1359                                 // unexpected frame drop: need to request new intra frame
1360                                 PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isocHeader.frameNum);
1361                                 usbvision_request_intra(usbvision);
1362                                 return ParseState_NextFrame;
1363                         }
1364                 }
1365                 usbvision->lastIsocFrameNum = frame->isocHeader.frameNum;
1366         }
1367         usbvision->header_count++;
1368         frame->scanstate = ScanState_Lines;
1369         frame->curline = 0;
1370
1371         if (flags & FLAGS_FORCE_TESTPATTERN) {
1372                 usbvision_testpattern(usbvision, 1, 1);
1373                 return ParseState_NextFrame;
1374         }
1375         return ParseState_Continue;
1376 }
1377
1378 static enum ParseState usbvision_parse_lines_422(struct usb_usbvision *usbvision,
1379                                            long *pcopylen)
1380 {
1381         volatile struct usbvision_frame *frame;
1382         unsigned char *f;
1383         int len;
1384         int i;
1385         unsigned char yuyv[4]={180, 128, 10, 128}; // YUV components
1386         unsigned char rv, gv, bv;       // RGB components
1387         int clipmask_index, bytes_per_pixel;
1388         int overlay = usbvision->overlay;
1389         int stretch_bytes, clipmask_add;
1390
1391         if (overlay) {
1392                 frame  = &usbvision->overlay_frame;
1393                 if (usbvision->overlay_base == NULL) {
1394                         //video_buffer is not set yet
1395                         return ParseState_NextFrame;
1396                 }
1397                 f = usbvision->overlay_win + frame->curline *
1398                         usbvision->vid_buf.fmt.bytesperline;
1399         }
1400         else {
1401                 frame  = usbvision->curFrame;
1402                 f = frame->data + (frame->v4l2_linesize * frame->curline);
1403         }
1404
1405         /* Make sure there's enough data for the entire line */
1406         len = (frame->isocHeader.frameWidth * 2)+5;
1407         if (scratch_len(usbvision) < len) {
1408                 PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len);
1409                 return ParseState_Out;
1410         }
1411
1412         if ((frame->curline + 1) >= frame->frmheight) {
1413                 return ParseState_NextFrame;
1414         }
1415
1416         bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
1417         stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
1418         clipmask_index = frame->curline * MAX_FRAME_WIDTH;
1419         clipmask_add = usbvision->stretch_width;
1420
1421         for (i = 0; i < frame->frmwidth; i+=(2 * usbvision->stretch_width)) {
1422
1423                 scratch_get(usbvision, &yuyv[0], 4);
1424
1425                 if((overlay) && (clipped_pixel(clipmask_index))) {
1426                         f += bytes_per_pixel;
1427                 }
1428                 else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1429                         *f++ = yuyv[0]; // Y
1430                         *f++ = yuyv[3]; // U
1431                 }
1432                 else {
1433
1434                         YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv);
1435                         switch (frame->v4l2_format.format) {
1436                                 case V4L2_PIX_FMT_RGB565:
1437                                         *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
1438                                         *f++ = (0x07 & (gv >> 5)) | (0xF8 &  rv);
1439                                         break;
1440                                 case V4L2_PIX_FMT_RGB24:
1441                                         *f++ = bv;
1442                                         *f++ = gv;
1443                                         *f++ = rv;
1444                                         break;
1445                                 case V4L2_PIX_FMT_RGB32:
1446                                         *f++ = bv;
1447                                         *f++ = gv;
1448                                         *f++ = rv;
1449                                         f++;
1450                                         break;
1451                                 case V4L2_PIX_FMT_RGB555:
1452                                         *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
1453                                         *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
1454                                         break;
1455                         }
1456                 }
1457                 clipmask_index += clipmask_add;
1458                 f += stretch_bytes;
1459
1460                 if((overlay) && (clipped_pixel(clipmask_index))) {
1461                         f += bytes_per_pixel;
1462                 }
1463                 else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1464                         *f++ = yuyv[2]; // Y
1465                         *f++ = yuyv[1]; // V
1466                 }
1467                 else {
1468
1469                         YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv);
1470                         switch (frame->v4l2_format.format) {
1471                                 case V4L2_PIX_FMT_RGB565:
1472                                         *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
1473                                         *f++ = (0x07 & (gv >> 5)) | (0xF8 &  rv);
1474                                         break;
1475                                 case V4L2_PIX_FMT_RGB24:
1476                                         *f++ = bv;
1477                                         *f++ = gv;
1478                                         *f++ = rv;
1479                                         break;
1480                                 case V4L2_PIX_FMT_RGB32:
1481                                         *f++ = bv;
1482                                         *f++ = gv;
1483                                         *f++ = rv;
1484                                         f++;
1485                                         break;
1486                                 case V4L2_PIX_FMT_RGB555:
1487                                         *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
1488                                         *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
1489                                         break;
1490                         }
1491                 }
1492                 clipmask_index += clipmask_add;
1493                 f += stretch_bytes;
1494         }
1495
1496         frame->curline += usbvision->stretch_height;
1497         *pcopylen += frame->v4l2_linesize * usbvision->stretch_height;
1498
1499         if (frame->curline >= frame->frmheight) {
1500                 return ParseState_NextFrame;
1501         }
1502         else {
1503                 return ParseState_Continue;
1504         }
1505 }
1506
1507
1508 static int usbvision_decompress(struct usb_usbvision *usbvision,unsigned char *Compressed,
1509                                                                 unsigned char *Decompressed, int *StartPos,
1510                                                                 int *BlockTypeStartPos, int Len)
1511 {
1512         int RestPixel, Idx, MaxPos, Pos, ExtraPos, BlockLen, BlockTypePos, BlockTypeLen;
1513         unsigned char BlockByte, BlockCode, BlockType, BlockTypeByte, Integrator;
1514
1515         Integrator = 0;
1516         Pos = *StartPos;
1517         BlockTypePos = *BlockTypeStartPos;
1518         MaxPos = 396; //Pos + Len;
1519         ExtraPos = Pos;
1520         BlockLen = 0;
1521         BlockByte = 0;
1522         BlockCode = 0;
1523         BlockType = 0;
1524         BlockTypeByte = 0;
1525         BlockTypeLen = 0;
1526         RestPixel = Len;
1527
1528         for (Idx = 0; Idx < Len; Idx++) {
1529
1530                 if (BlockLen == 0) {
1531                         if (BlockTypeLen==0) {
1532                                 BlockTypeByte = Compressed[BlockTypePos];
1533                                 BlockTypePos++;
1534                                 BlockTypeLen = 4;
1535                         }
1536                         BlockType = (BlockTypeByte & 0xC0) >> 6;
1537
1538                         //statistic:
1539                         usbvision->ComprBlockTypes[BlockType]++;
1540
1541                         Pos = ExtraPos;
1542                         if (BlockType == 0) {
1543                                 if(RestPixel >= 24) {
1544                                         Idx += 23;
1545                                         RestPixel -= 24;
1546                                         Integrator = Decompressed[Idx];
1547                                 } else {
1548                                         Idx += RestPixel - 1;
1549                                         RestPixel = 0;
1550                                 }
1551                         } else {
1552                                 BlockCode = Compressed[Pos];
1553                                 Pos++;
1554                                 if (RestPixel >= 24) {
1555                                         BlockLen  = 24;
1556                                 } else {
1557                                         BlockLen = RestPixel;
1558                                 }
1559                                 RestPixel -= BlockLen;
1560                                 ExtraPos = Pos + (BlockLen / 4);
1561                         }
1562                         BlockTypeByte <<= 2;
1563                         BlockTypeLen -= 1;
1564                 }
1565                 if (BlockLen > 0) {
1566                         if ((BlockLen%4) == 0) {
1567                                 BlockByte = Compressed[Pos];
1568                                 Pos++;
1569                         }
1570                         if (BlockType == 1) { //inter Block
1571                                 Integrator = Decompressed[Idx];
1572                         }
1573                         switch (BlockByte & 0xC0) {
1574                                 case 0x03<<6:
1575                                         Integrator += Compressed[ExtraPos];
1576                                         ExtraPos++;
1577                                         break;
1578                                 case 0x02<<6:
1579                                         Integrator += BlockCode;
1580                                         break;
1581                                 case 0x00:
1582                                         Integrator -= BlockCode;
1583                                         break;
1584                         }
1585                         Decompressed[Idx] = Integrator;
1586                         BlockByte <<= 2;
1587                         BlockLen -= 1;
1588                 }
1589         }
1590         *StartPos = ExtraPos;
1591         *BlockTypeStartPos = BlockTypePos;
1592         return Idx;
1593 }
1594
1595
1596 /*
1597  * usbvision_parse_compress()
1598  *
1599  * Parse compressed frame from the scratch buffer, put
1600  * decoded RGB value into the current frame buffer and add the written
1601  * number of bytes (RGB) to the *pcopylen.
1602  *
1603  */
1604 static enum ParseState usbvision_parse_compress(struct usb_usbvision *usbvision,
1605                                            long *pcopylen)
1606 {
1607 #define USBVISION_STRIP_MAGIC           0x5A
1608 #define USBVISION_STRIP_LEN_MAX         400
1609 #define USBVISION_STRIP_HEADER_LEN      3
1610
1611         struct usbvision_frame *frame;
1612         unsigned char *f,*u = NULL ,*v = NULL;
1613         unsigned char StripData[USBVISION_STRIP_LEN_MAX];
1614         unsigned char StripHeader[USBVISION_STRIP_HEADER_LEN];
1615         int Idx, IdxEnd, StripLen, StripPtr, StartBlockPos, BlockPos, BlockTypePos;
1616         int clipmask_index, bytes_per_pixel, rc;
1617         int overlay = usbvision->overlay;
1618         int imageSize;
1619         unsigned char rv, gv, bv;
1620         static unsigned char *Y, *U, *V;
1621
1622         if (overlay) {
1623                 frame  = &usbvision->overlay_frame;
1624                 imageSize = frame->frmwidth * frame->frmheight;
1625                 if (usbvision->overlay_base == NULL) {
1626                         //video_buffer is not set yet
1627                         return ParseState_NextFrame;
1628                 }
1629                 f = usbvision->overlay_win + frame->curline *
1630                         usbvision->vid_buf.fmt.bytesperline;
1631         }
1632         else {
1633                 frame  = usbvision->curFrame;
1634                 imageSize = frame->frmwidth * frame->frmheight;
1635                 if ( (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) ||
1636                      (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) )
1637                 {       // this is a planar format
1638                                                                        //... v4l2_linesize not used here.
1639                         f = frame->data + (frame->width * frame->curline);
1640                 } else
1641                         f = frame->data + (frame->v4l2_linesize * frame->curline);
1642
1643                 if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV){ //initialise u and v pointers
1644                                                                  // get base of u and b planes add halfoffset
1645
1646                         u = frame->data
1647                                 + imageSize
1648                                 + (frame->frmwidth >>1) * frame->curline ;
1649                         v = u + (imageSize >>1 );
1650
1651                 } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420){
1652
1653                         v = frame->data + imageSize + ((frame->curline* (frame->width))>>2) ;
1654                         u = v + (imageSize >>2) ;
1655                 }
1656         }
1657
1658         if (frame->curline == 0) {
1659                 usbvision_adjust_compression(usbvision);
1660         }
1661
1662         if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) {
1663                 return ParseState_Out;
1664         }
1665
1666         //get strip header without changing the scratch_read_ptr
1667         scratch_set_extra_ptr(usbvision, &StripPtr, 0);
1668         scratch_get_extra(usbvision, &StripHeader[0], &StripPtr,
1669                                 USBVISION_STRIP_HEADER_LEN);
1670
1671         if (StripHeader[0] != USBVISION_STRIP_MAGIC) {
1672                 // wrong strip magic
1673                 usbvision->stripMagicErrors++;
1674                 return ParseState_NextFrame;
1675         }
1676
1677         if (frame->curline != (int)StripHeader[2]) {
1678                 //line number missmatch error
1679                 usbvision->stripLineNumberErrors++;
1680         }
1681
1682         StripLen = 2 * (unsigned int)StripHeader[1];
1683         if (StripLen > USBVISION_STRIP_LEN_MAX) {
1684                 // strip overrun
1685                 // I think this never happens
1686                 usbvision_request_intra(usbvision);
1687         }
1688
1689         if (scratch_len(usbvision) < StripLen) {
1690                 //there is not enough data for the strip
1691                 return ParseState_Out;
1692         }
1693
1694         if (usbvision->IntraFrameBuffer) {
1695                 Y = usbvision->IntraFrameBuffer + frame->frmwidth * frame->curline;
1696                 U = usbvision->IntraFrameBuffer + imageSize + (frame->frmwidth / 2) * (frame->curline / 2);
1697                 V = usbvision->IntraFrameBuffer + imageSize / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2);
1698         }
1699         else {
1700                 return ParseState_NextFrame;
1701         }
1702
1703         bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
1704         clipmask_index = frame->curline * MAX_FRAME_WIDTH;
1705
1706         scratch_get(usbvision, StripData, StripLen);
1707
1708         IdxEnd = frame->frmwidth;
1709         BlockTypePos = USBVISION_STRIP_HEADER_LEN;
1710         StartBlockPos = BlockTypePos + (IdxEnd - 1) / 96 + (IdxEnd / 2 - 1) / 96 + 2;
1711         BlockPos = StartBlockPos;
1712
1713         usbvision->BlockPos = BlockPos;
1714
1715         if ((rc = usbvision_decompress(usbvision, StripData, Y, &BlockPos, &BlockTypePos, IdxEnd)) != IdxEnd) {
1716                 //return ParseState_Continue;
1717         }
1718         if (StripLen > usbvision->maxStripLen) {
1719                 usbvision->maxStripLen = StripLen;
1720         }
1721
1722         if (frame->curline%2) {
1723                 if ((rc = usbvision_decompress(usbvision, StripData, V, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
1724                 //return ParseState_Continue;
1725                 }
1726         }
1727         else {
1728                 if ((rc = usbvision_decompress(usbvision, StripData, U, &BlockPos, &BlockTypePos, IdxEnd/2)) != IdxEnd/2) {
1729                         //return ParseState_Continue;
1730                 }
1731         }
1732
1733         if (BlockPos > usbvision->comprBlockPos) {
1734                 usbvision->comprBlockPos = BlockPos;
1735         }
1736         if (BlockPos > StripLen) {
1737                 usbvision->stripLenErrors++;
1738         }
1739
1740         for (Idx = 0; Idx < IdxEnd; Idx++) {
1741                 if((overlay) && (clipped_pixel(clipmask_index))) {
1742                         f += bytes_per_pixel;
1743                 }
1744                 else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1745                         *f++ = Y[Idx];
1746                         *f++ = Idx & 0x01 ? U[Idx/2] : V[Idx/2];
1747                 }
1748                 else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) {
1749                         *f++ = Y[Idx];
1750                         if ( Idx & 0x01)
1751                                 *u++ = U[Idx>>1] ;
1752                         else
1753                                 *v++ = V[Idx>>1];
1754                 }
1755                 else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) {
1756                         *f++ = Y [Idx];
1757                         if ( !((  Idx & 0x01  ) | (  frame->curline & 0x01  )) ){
1758
1759 /*                               only need do this for 1 in 4 pixels */
1760 /*                               intraframe buffer is YUV420 format */
1761
1762                                 *u++ = U[Idx >>1];
1763                                 *v++ = V[Idx >>1];
1764                         }
1765
1766                 }
1767                 else {
1768                         YUV_TO_RGB_BY_THE_BOOK(Y[Idx], U[Idx/2], V[Idx/2], rv, gv, bv);
1769                         switch (frame->v4l2_format.format) {
1770                                 case V4L2_PIX_FMT_GREY:
1771                                         *f++ = Y[Idx];
1772                                         break;
1773                                 case V4L2_PIX_FMT_RGB555:
1774                                         *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2));
1775                                         *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1));
1776                                         break;
1777                                 case V4L2_PIX_FMT_RGB565:
1778                                         *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3));
1779                                         *f++ = (0x07 & (gv >> 5)) | (0xF8 &  rv);
1780                                         break;
1781                                 case V4L2_PIX_FMT_RGB24:
1782                                         *f++ = bv;
1783                                         *f++ = gv;
1784                                         *f++ = rv;
1785                                         break;
1786                                 case V4L2_PIX_FMT_RGB32:
1787                                         *f++ = bv;
1788                                         *f++ = gv;
1789                                         *f++ = rv;
1790                                         f++;
1791                                         break;
1792                         }
1793                 }
1794                 clipmask_index++;
1795         }
1796         /* Deal with non-integer no. of bytes for YUV420P */
1797         if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420 )
1798                 *pcopylen += frame->v4l2_linesize;
1799         else
1800                 *pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1;
1801
1802         frame->curline += 1;
1803
1804         if (frame->curline >= frame->frmheight) {
1805                 return ParseState_NextFrame;
1806         }
1807         else {
1808                 return ParseState_Continue;
1809         }
1810
1811 }
1812
1813
1814 /*
1815  * usbvision_parse_lines_420()
1816  *
1817  * Parse two lines from the scratch buffer, put
1818  * decoded RGB value into the current frame buffer and add the written
1819  * number of bytes (RGB) to the *pcopylen.
1820  *
1821  */
1822 static enum ParseState usbvision_parse_lines_420(struct usb_usbvision *usbvision,
1823                                            long *pcopylen)
1824 {
1825         struct usbvision_frame *frame;
1826         unsigned char *f_even = NULL, *f_odd = NULL;
1827         unsigned int pixel_per_line, block;
1828         int pixel, block_split;
1829         int y_ptr, u_ptr, v_ptr, y_odd_offset;
1830         const int   y_block_size = 128;
1831         const int  uv_block_size = 64;
1832         const int sub_block_size = 32;
1833         const int y_step[] = { 0, 0, 0, 2 },  y_step_size = 4;
1834         const int uv_step[]= { 0, 0, 0, 4 }, uv_step_size = 4;
1835         unsigned char y[2], u, v;       /* YUV components */
1836         int y_, u_, v_, vb, uvg, ur;
1837         int r_, g_, b_;                 /* RGB components */
1838         unsigned char g;
1839         int clipmask_even_index, clipmask_odd_index, bytes_per_pixel;
1840         int clipmask_add, stretch_bytes;
1841         int overlay = usbvision->overlay;
1842
1843         if (overlay) {
1844                 frame  = &usbvision->overlay_frame;
1845                 if (usbvision->overlay_base == NULL) {
1846                         //video_buffer is not set yet
1847                         return ParseState_NextFrame;
1848                 }
1849                 f_even = usbvision->overlay_win + frame->curline *
1850                          usbvision->vid_buf.fmt.bytesperline;
1851                 f_odd  = f_even + usbvision->vid_buf.fmt.bytesperline * usbvision->stretch_height;
1852         }
1853         else {
1854                 frame  = usbvision->curFrame;
1855                 f_even = frame->data + (frame->v4l2_linesize * frame->curline);
1856                 f_odd  = f_even + frame->v4l2_linesize * usbvision->stretch_height;
1857         }
1858
1859         /* Make sure there's enough data for the entire line */
1860         /* In this mode usbvision transfer 3 bytes for every 2 pixels */
1861         /* I need two lines to decode the color */
1862         bytes_per_pixel = frame->v4l2_format.bytes_per_pixel;
1863         stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel;
1864         clipmask_even_index = frame->curline * MAX_FRAME_WIDTH;
1865         clipmask_odd_index  = clipmask_even_index + MAX_FRAME_WIDTH;
1866         clipmask_add = usbvision->stretch_width;
1867         pixel_per_line = frame->isocHeader.frameWidth;
1868
1869         if (scratch_len(usbvision) < (int)pixel_per_line * 3) {
1870                 //printk(KERN_DEBUG "out of data, need %d\n", len);
1871                 return ParseState_Out;
1872         }
1873
1874         if ((frame->curline + 1) >= frame->frmheight) {
1875                 return ParseState_NextFrame;
1876         }
1877
1878         block_split = (pixel_per_line%y_block_size) ? 1 : 0;    //are some blocks splitted into different lines?
1879
1880         y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size)
1881                         + block_split * uv_block_size;
1882
1883         scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset);
1884         scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size);
1885         scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset
1886                         + (4 - block_split) * sub_block_size);
1887
1888         for (block = 0; block < (pixel_per_line / sub_block_size);
1889              block++) {
1890
1891
1892                 for (pixel = 0; pixel < sub_block_size; pixel +=2) {
1893                         scratch_get(usbvision, &y[0], 2);
1894                         scratch_get_extra(usbvision, &u, &u_ptr, 1);
1895                         scratch_get_extra(usbvision, &v, &v_ptr, 1);
1896
1897                         //I don't use the YUV_TO_RGB macro for better performance
1898                         v_ = v - 128;
1899                         u_ = u - 128;
1900                         vb =              132252 * v_;
1901                         uvg= -53281 * u_ - 25625 * v_;
1902                         ur = 104595 * u_;
1903
1904                         if((overlay) && (clipped_pixel(clipmask_even_index))) {
1905                                 f_even += bytes_per_pixel;
1906                         }
1907                         else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1908                                 *f_even++ = y[0];
1909                                 *f_even++ = v;
1910                         }
1911                         else {
1912                                 y_ = 76284 * (y[0] - 16);
1913
1914                                 b_ = (y_ + vb) >> 16;
1915                                 g_ = (y_ + uvg)>> 16;
1916                                 r_ = (y_ + ur) >> 16;
1917
1918                                 switch (frame->v4l2_format.format) {
1919                                         case V4L2_PIX_FMT_RGB565:
1920                                                 g = LIMIT_RGB(g_);
1921                                                 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1922                                                 *f_even++ = (0x07 & (          g   >> 5)) | (0xF8 & LIMIT_RGB(r_));
1923                                                 break;
1924                                         case V4L2_PIX_FMT_RGB24:
1925                                                 *f_even++ = LIMIT_RGB(b_);
1926                                                 *f_even++ = LIMIT_RGB(g_);
1927                                                 *f_even++ = LIMIT_RGB(r_);
1928                                                 break;
1929                                         case V4L2_PIX_FMT_RGB32:
1930                                                 *f_even++ = LIMIT_RGB(b_);
1931                                                 *f_even++ = LIMIT_RGB(g_);
1932                                                 *f_even++ = LIMIT_RGB(r_);
1933                                                 f_even++;
1934                                                 break;
1935                                         case V4L2_PIX_FMT_RGB555:
1936                                                 g = LIMIT_RGB(g_);
1937                                                 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1938                                                 *f_even++ = (0x03 & (          g   >> 6)) |
1939                                                             (0x7C & (LIMIT_RGB(r_) >> 1));
1940                                                 break;
1941                                 }
1942                         }
1943                         clipmask_even_index += clipmask_add;
1944                         f_even += stretch_bytes;
1945
1946                         if((overlay) && (clipped_pixel(clipmask_even_index))) {
1947                                 f_even += bytes_per_pixel;
1948                         }
1949                         else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1950                                 *f_even++ = y[1];
1951                                 *f_even++ = u;
1952                         }
1953                         else {
1954                                 y_ = 76284 * (y[1] - 16);
1955
1956                                 b_ = (y_ + vb) >> 16;
1957                                 g_ = (y_ + uvg)>> 16;
1958                                 r_ = (y_ + ur) >> 16;
1959
1960                                 switch (frame->v4l2_format.format) {
1961                                         case V4L2_PIX_FMT_RGB565:
1962                                                 g = LIMIT_RGB(g_);
1963                                                 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
1964                                                 *f_even++ = (0x07 & (          g   >> 5)) | (0xF8 & LIMIT_RGB(r_));
1965                                                 break;
1966                                         case V4L2_PIX_FMT_RGB24:
1967                                                 *f_even++ = LIMIT_RGB(b_);
1968                                                 *f_even++ = LIMIT_RGB(g_);
1969                                                 *f_even++ = LIMIT_RGB(r_);
1970                                                 break;
1971                                         case V4L2_PIX_FMT_RGB32:
1972                                                 *f_even++ = LIMIT_RGB(b_);
1973                                                 *f_even++ = LIMIT_RGB(g_);
1974                                                 *f_even++ = LIMIT_RGB(r_);
1975                                                 f_even++;
1976                                                 break;
1977                                         case V4L2_PIX_FMT_RGB555:
1978                                                 g = LIMIT_RGB(g_);
1979                                                 *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
1980                                                 *f_even++ = (0x03 & (          g   >> 6)) |
1981                                                             (0x7C & (LIMIT_RGB(r_) >> 1));
1982                                                 break;
1983                                 }
1984                         }
1985                         clipmask_even_index += clipmask_add;
1986                         f_even += stretch_bytes;
1987
1988                         scratch_get_extra(usbvision, &y[0], &y_ptr, 2);
1989
1990                         if ((overlay) && (clipped_pixel(clipmask_odd_index))) {
1991                                 f_odd += bytes_per_pixel;
1992                         }
1993                         else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
1994                                 *f_odd++ = y[0];
1995                                 *f_odd++ = v;
1996                         }
1997                         else {
1998                                 y_ = 76284 * (y[0] - 16);
1999
2000                                 b_ = (y_ + vb) >> 16;
2001                                 g_ = (y_ + uvg)>> 16;
2002                                 r_ = (y_ + ur) >> 16;
2003
2004                                 switch (frame->v4l2_format.format) {
2005                                         case V4L2_PIX_FMT_RGB565:
2006                                                 g = LIMIT_RGB(g_);
2007                                                 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
2008                                                 *f_odd++ = (0x07 & (          g   >> 5)) | (0xF8 & LIMIT_RGB(r_));
2009                                                 break;
2010                                         case V4L2_PIX_FMT_RGB24:
2011                                                 *f_odd++ = LIMIT_RGB(b_);
2012                                                 *f_odd++ = LIMIT_RGB(g_);
2013                                                 *f_odd++ = LIMIT_RGB(r_);
2014                                                 break;
2015                                         case V4L2_PIX_FMT_RGB32:
2016                                                 *f_odd++ = LIMIT_RGB(b_);
2017                                                 *f_odd++ = LIMIT_RGB(g_);
2018                                                 *f_odd++ = LIMIT_RGB(r_);
2019                                                 f_odd++;
2020                                                 break;
2021                                         case V4L2_PIX_FMT_RGB555:
2022                                                 g = LIMIT_RGB(g_);
2023                                                 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
2024                                                 *f_odd++ = (0x03 & (          g   >> 6)) |
2025                                                            (0x7C & (LIMIT_RGB(r_) >> 1));
2026                                                 break;
2027                                 }
2028                         }
2029                         clipmask_odd_index += clipmask_add;
2030                         f_odd += stretch_bytes;
2031
2032                         if((overlay) && (clipped_pixel(clipmask_odd_index))) {
2033                                 f_odd += bytes_per_pixel;
2034                         }
2035                         else if(frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) {
2036                                 *f_odd++ = y[1];
2037                                 *f_odd++ = u;
2038                         }
2039                         else {
2040                                 y_ = 76284 * (y[1] - 16);
2041
2042                                 b_ = (y_ + vb) >> 16;
2043                                 g_ = (y_ + uvg)>> 16;
2044                                 r_ = (y_ + ur) >> 16;
2045
2046                                 switch (frame->v4l2_format.format) {
2047                                         case V4L2_PIX_FMT_RGB565:
2048                                                 g = LIMIT_RGB(g_);
2049                                                 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3));
2050                                                 *f_odd++ = (0x07 & (          g   >> 5)) | (0xF8 & LIMIT_RGB(r_));
2051                                                 break;
2052                                         case V4L2_PIX_FMT_RGB24:
2053                                                 *f_odd++ = LIMIT_RGB(b_);
2054                                                 *f_odd++ = LIMIT_RGB(g_);
2055                                                 *f_odd++ = LIMIT_RGB(r_);
2056                                                 break;
2057                                         case V4L2_PIX_FMT_RGB32:
2058                                                 *f_odd++ = LIMIT_RGB(b_);
2059                                                 *f_odd++ = LIMIT_RGB(g_);
2060                                                 *f_odd++ = LIMIT_RGB(r_);
2061                                                 f_odd++;
2062                                                 break;
2063                                         case V4L2_PIX_FMT_RGB555:
2064                                                 g = LIMIT_RGB(g_);
2065                                                 *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2));
2066                                                 *f_odd++ = (0x03 & (          g   >> 6)) |
2067                                                            (0x7C & (LIMIT_RGB(r_) >> 1));
2068                                                 break;
2069                                 }
2070                         }
2071                         clipmask_odd_index += clipmask_add;
2072                         f_odd += stretch_bytes;
2073                 }
2074
2075                 scratch_rm_old(usbvision,y_step[block % y_step_size] * sub_block_size);
2076                 scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size]
2077                                 * sub_block_size);
2078                 scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size]
2079                                 * sub_block_size);
2080                 scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size]
2081                                 * sub_block_size);
2082         }
2083
2084         scratch_rm_old(usbvision, pixel_per_line * 3 / 2
2085                         + block_split * sub_block_size);
2086
2087         frame->curline += 2 * usbvision->stretch_height;
2088         *pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height;
2089
2090         if (frame->curline >= frame->frmheight)
2091                 return ParseState_NextFrame;
2092         else
2093                 return ParseState_Continue;
2094 }
2095
2096 /*
2097  * usbvision_parse_data()
2098  *
2099  * Generic routine to parse the scratch buffer. It employs either
2100  * usbvision_find_header() or usbvision_parse_lines() to do most
2101  * of work.
2102  *
2103  */
2104 static void usbvision_parse_data(struct usb_usbvision *usbvision)
2105 {
2106         struct usbvision_frame *frame;
2107         enum ParseState newstate;
2108         long copylen = 0;
2109         unsigned long lock_flags;
2110
2111         if (usbvision->overlay) {
2112                 frame = &usbvision->overlay_frame;
2113         }
2114         else {
2115                 frame = usbvision->curFrame;
2116         }
2117
2118         PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision));
2119
2120         while (1) {
2121
2122                 newstate = ParseState_Out;
2123                 if (scratch_len(usbvision)) {
2124                         if (frame->scanstate == ScanState_Scanning) {
2125                                 newstate = usbvision_find_header(usbvision);
2126                         }
2127                         else if (frame->scanstate == ScanState_Lines) {
2128                                 if (usbvision->isocMode == ISOC_MODE_YUV420) {
2129                                         newstate = usbvision_parse_lines_420(usbvision, &copylen);
2130                                 }
2131                                 else if (usbvision->isocMode == ISOC_MODE_YUV422) {
2132                                         newstate = usbvision_parse_lines_422(usbvision, &copylen);
2133                                 }
2134                                 else if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
2135                                         newstate = usbvision_parse_compress(usbvision, &copylen);
2136                                 }
2137
2138                         }
2139                 }
2140                 if (newstate == ParseState_Continue) {
2141                         continue;
2142                 }
2143                 else if ((newstate == ParseState_NextFrame) || (newstate == ParseState_Out)) {
2144                         break;
2145                 }
2146                 else {
2147                         return; /* ParseState_EndParse */
2148                 }
2149         }
2150
2151         if (newstate == ParseState_NextFrame) {
2152                 frame->grabstate = FrameState_Done;
2153                 do_gettimeofday(&(frame->timestamp));
2154                 frame->sequence = usbvision->frame_num;
2155                 if (usbvision->overlay) {
2156                         frame->grabstate = FrameState_Grabbing;
2157                         frame->scanstate = ScanState_Scanning;
2158                         frame->scanlength = 0;
2159                         copylen = 0;
2160                 }
2161                 else {
2162                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
2163                         list_move_tail(&(frame->frame), &usbvision->outqueue);
2164                         usbvision->curFrame = NULL;
2165                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
2166                 }
2167                 usbvision->frame_num++;
2168
2169                 /* Optionally display statistics on the screen */
2170                 if (flags & FLAGS_OSD_STATS)
2171                         usbvision_osd_stats(usbvision, frame);
2172
2173                 /* This will cause the process to request another frame. */
2174                 if (waitqueue_active(&usbvision->wait_frame)) {
2175                         PDEBUG(DBG_PARSE, "Wake up !");
2176                         wake_up_interruptible(&usbvision->wait_frame);
2177                 }
2178         }
2179         else
2180                 frame->grabstate = FrameState_Grabbing;
2181
2182
2183         /* Update the frame's uncompressed length. */
2184         frame->scanlength += copylen;
2185 }
2186
2187
2188 /*
2189  * Make all of the blocks of data contiguous
2190  */
2191 static int usbvision_compress_isochronous(struct usb_usbvision *usbvision,
2192                                           struct urb *urb)
2193 {
2194         unsigned char *packet_data;
2195         int i, totlen = 0;
2196
2197         for (i = 0; i < urb->number_of_packets; i++) {
2198                 int packet_len = urb->iso_frame_desc[i].actual_length;
2199                 int packet_stat = urb->iso_frame_desc[i].status;
2200
2201                 packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
2202
2203                 /* Detect and ignore errored packets */
2204                 if (packet_stat) {      // packet_stat != 0 ?????????????
2205                         PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat);
2206                         usbvision->isocErrCount++;
2207                         continue;
2208                 }
2209
2210                 /* Detect and ignore empty packets */
2211                 if (packet_len < 0) {
2212                         PDEBUG(DBG_ISOC, "error packet [%d]", i);
2213                         usbvision->isocSkipCount++;
2214                         continue;
2215                 }
2216                 else if (packet_len == 0) {     /* Frame end ????? */
2217                         PDEBUG(DBG_ISOC, "null packet [%d]", i);
2218                         usbvision->isocstate=IsocState_NoFrame;
2219                         usbvision->isocSkipCount++;
2220                         continue;
2221                 }
2222                 else if (packet_len > usbvision->isocPacketSize) {
2223                         PDEBUG(DBG_ISOC, "packet[%d] > isocPacketSize", i);
2224                         usbvision->isocSkipCount++;
2225                         continue;
2226                 }
2227
2228                 PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len);
2229
2230                 if (usbvision->isocstate==IsocState_NoFrame) { //new frame begins
2231                         usbvision->isocstate=IsocState_InFrame;
2232                         scratch_mark_header(usbvision);
2233                         usbvision_measure_bandwidth(usbvision);
2234                         PDEBUG(DBG_ISOC, "packet with header");
2235                 }
2236
2237                 /*
2238                  * If usbvision continues to feed us with data but there is no
2239                  * consumption (if, for example, V4L client fell asleep) we
2240                  * may overflow the buffer. We have to move old data over to
2241                  * free room for new data. This is bad for old data. If we
2242                  * just drop new data then it's bad for new data... choose
2243                  * your favorite evil here.
2244                  */
2245                 if (scratch_free(usbvision) < packet_len) {
2246
2247                         usbvision->scratch_ovf_count++;
2248                         PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d",
2249                                scratch_len(usbvision), packet_len);
2250                         scratch_rm_old(usbvision, packet_len - scratch_free(usbvision));
2251                 }
2252
2253                 /* Now we know that there is enough room in scratch buffer */
2254                 scratch_put(usbvision, packet_data, packet_len);
2255                 totlen += packet_len;
2256                 usbvision->isocDataCount += packet_len;
2257                 usbvision->isocPacketCount++;
2258         }
2259 #if ENABLE_HEXDUMP
2260         if (totlen > 0) {
2261                 static int foo = 0;
2262                 if (foo < 1) {
2263                         printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen);
2264                         usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen);
2265                         ++foo;
2266                 }
2267         }
2268 #endif
2269  return totlen;
2270 }
2271
2272 static void usbvision_isocIrq(struct urb *urb, struct pt_regs *regs)
2273 {
2274         int errCode = 0;
2275         int len;
2276         struct usb_usbvision *usbvision = urb->context;
2277         int i;
2278         unsigned long startTime = jiffies;
2279         struct usbvision_frame **f;
2280
2281         /* We don't want to do anything if we are about to be removed! */
2282         if (!USBVISION_IS_OPERATIONAL(usbvision))
2283                 return;
2284
2285         f = &usbvision->curFrame;
2286
2287         /* Manage streaming interruption */
2288         if (usbvision->streaming == Stream_Interrupt) {
2289                 usbvision->streaming = Stream_Idle;
2290                 if ((*f)) {
2291                         (*f)->grabstate = FrameState_Ready;
2292                         (*f)->scanstate = ScanState_Scanning;
2293                 }
2294                 PDEBUG(DBG_IRQ, "stream interrupted");
2295                 wake_up_interruptible(&usbvision->wait_stream);
2296         }
2297
2298         /* Copy the data received into our scratch buffer */
2299         len = usbvision_compress_isochronous(usbvision, urb);
2300
2301         usbvision->isocUrbCount++;
2302         usbvision->urb_length = len;
2303
2304         if (usbvision->streaming == Stream_On) {
2305
2306                 /* If we collected enough data let's parse! */
2307                 if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH) { /* 12 == header_length */
2308                         /*If we don't have a frame we're current working on, complain */
2309                         if((!list_empty(&(usbvision->inqueue))) || (usbvision->overlay)) {
2310                                 if (!(*f)) {
2311                                         (*f) = list_entry(usbvision->inqueue.next,struct usbvision_frame, frame);
2312                                 }
2313                                 usbvision_parse_data(usbvision);
2314                         }
2315                         else {
2316                                 PDEBUG(DBG_IRQ, "received data, but no one needs it");
2317                                 scratch_reset(usbvision);
2318                         }
2319                 }
2320         }
2321         else {
2322                 PDEBUG(DBG_IRQ, "received data, but no one needs it");
2323                 scratch_reset(usbvision);
2324         }
2325
2326         usbvision->timeInIrq += jiffies - startTime;
2327
2328         for (i = 0; i < USBVISION_URB_FRAMES; i++) {
2329                 urb->iso_frame_desc[i].status = 0;
2330                 urb->iso_frame_desc[i].actual_length = 0;
2331         }
2332
2333         urb->status = 0;
2334         urb->dev = usbvision->dev;
2335         errCode = usb_submit_urb (urb, GFP_ATOMIC);
2336
2337         /* Disable this warning.  By design of the driver. */
2338         //      if(errCode) {
2339         //              err("%s: usb_submit_urb failed: error %d", __FUNCTION__, errCode);
2340         //      }
2341
2342         return;
2343 }
2344
2345 /*************************************/
2346 /* Low level usbvision access functions */
2347 /*************************************/
2348
2349 /*
2350  * usbvision_read_reg()
2351  *
2352  * return  < 0 -> Error
2353  *        >= 0 -> Data
2354  */
2355
2356 static int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg)
2357 {
2358         int errCode = 0;
2359         unsigned char buffer[1];
2360
2361         if (!USBVISION_IS_OPERATIONAL(usbvision))
2362                 return -1;
2363
2364         errCode = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1),
2365                                 USBVISION_OP_CODE,
2366                                 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
2367                                 0, (__u16) reg, buffer, 1, HZ);
2368
2369         if (errCode < 0) {
2370                 err("%s: failed: error %d", __FUNCTION__, errCode);
2371                 return errCode;
2372         }
2373         return buffer[0];
2374 }
2375
2376 /*
2377  * usbvision_write_reg()
2378  *
2379  * return 1 -> Reg written
2380  *        0 -> usbvision is not yet ready
2381  *       -1 -> Something went wrong
2382  */
2383
2384 static int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
2385                             unsigned char value)
2386 {
2387         int errCode = 0;
2388
2389         if (!USBVISION_IS_OPERATIONAL(usbvision))
2390                 return 0;
2391
2392         errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
2393                                 USBVISION_OP_CODE,
2394                                 USB_DIR_OUT | USB_TYPE_VENDOR |
2395                                 USB_RECIP_ENDPOINT, 0, (__u16) reg, &value, 1, HZ);
2396
2397         if (errCode < 0) {
2398                 err("%s: failed: error %d", __FUNCTION__, errCode);
2399         }
2400         return errCode;
2401 }
2402
2403
2404 static void usbvision_ctrlUrb_complete(struct urb *urb, struct pt_regs *regs)
2405 {
2406         struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context;
2407
2408         PDEBUG(DBG_IRQ, "");
2409         usbvision->ctrlUrbBusy = 0;
2410         if (waitqueue_active(&usbvision->ctrlUrb_wq)) {
2411                 wake_up_interruptible(&usbvision->ctrlUrb_wq);
2412         }
2413 }
2414
2415
2416 static int usbvision_write_reg_irq(struct usb_usbvision *usbvision,int address,
2417                                                                         unsigned char *data, int len)
2418 {
2419         int errCode = 0;
2420
2421         PDEBUG(DBG_IRQ, "");
2422         if (len > 8) {
2423                 return -EFAULT;
2424         }
2425 //      down(&usbvision->ctrlUrbLock);
2426         if (usbvision->ctrlUrbBusy) {
2427 //              up(&usbvision->ctrlUrbLock);
2428                 return -EBUSY;
2429         }
2430         usbvision->ctrlUrbBusy = 1;
2431 //      up(&usbvision->ctrlUrbLock);
2432
2433         usbvision->ctrlUrbSetup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
2434         usbvision->ctrlUrbSetup.bRequest     = USBVISION_OP_CODE;
2435         usbvision->ctrlUrbSetup.wValue       = 0;
2436         usbvision->ctrlUrbSetup.wIndex       = cpu_to_le16(address);
2437         usbvision->ctrlUrbSetup.wLength      = cpu_to_le16(len);
2438         usb_fill_control_urb (usbvision->ctrlUrb, usbvision->dev,
2439                                                         usb_sndctrlpipe(usbvision->dev, 1),
2440                                                         (unsigned char *)&usbvision->ctrlUrbSetup,
2441                                                         (void *)usbvision->ctrlUrbBuffer, len,
2442                                                         usbvision_ctrlUrb_complete,
2443                                                         (void *)usbvision);
2444
2445         memcpy(usbvision->ctrlUrbBuffer, data, len);
2446
2447         errCode = usb_submit_urb(usbvision->ctrlUrb, GFP_ATOMIC);
2448         if (errCode < 0) {
2449                 // error in usb_submit_urb()
2450                 usbvision->ctrlUrbBusy = 0;
2451         }
2452         PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, errCode);
2453         return errCode;
2454 }
2455
2456
2457
2458
2459 static int usbvision_init_compression(struct usb_usbvision *usbvision)
2460 {
2461         int errCode = 0;
2462
2463         usbvision->lastIsocFrameNum = -1;
2464         usbvision->isocDataCount = 0;
2465         usbvision->isocPacketCount = 0;
2466         usbvision->isocSkipCount = 0;
2467         usbvision->comprLevel = 50;
2468         usbvision->lastComprLevel = -1;
2469         usbvision->isocUrbCount = 0;
2470         usbvision->requestIntra = 1;
2471         usbvision->isocMeasureBandwidthCount = 0;
2472
2473         return errCode;
2474 }
2475
2476 /* this function measures the used bandwidth since last call
2477  * return:    0 : no error
2478  * sets usedBandwidth to 1-100 : 1-100% of full bandwidth resp. to isocPacketSize
2479  */
2480 static int usbvision_measure_bandwidth (struct usb_usbvision *usbvision)
2481 {
2482         int errCode = 0;
2483
2484         if (usbvision->isocMeasureBandwidthCount < 2) { // this gives an average bandwidth of 3 frames
2485                 usbvision->isocMeasureBandwidthCount++;
2486                 return errCode;
2487         }
2488         if ((usbvision->isocPacketSize > 0) && (usbvision->isocPacketCount > 0)) {
2489                 usbvision->usedBandwidth = usbvision->isocDataCount /
2490                                         (usbvision->isocPacketCount + usbvision->isocSkipCount) *
2491                                         100 / usbvision->isocPacketSize;
2492         }
2493         usbvision->isocMeasureBandwidthCount = 0;
2494         usbvision->isocDataCount = 0;
2495         usbvision->isocPacketCount = 0;
2496         usbvision->isocSkipCount = 0;
2497         return errCode;
2498 }
2499
2500 static int usbvision_adjust_compression (struct usb_usbvision *usbvision)
2501 {
2502         int errCode = 0;
2503         unsigned char buffer[6];
2504
2505         PDEBUG(DBG_IRQ, "");
2506         if ((adjustCompression) && (usbvision->usedBandwidth > 0)) {
2507                 usbvision->comprLevel += (usbvision->usedBandwidth - 90) / 2;
2508                 RESTRICT_TO_RANGE(usbvision->comprLevel, 0, 100);
2509                 if (usbvision->comprLevel != usbvision->lastComprLevel) {
2510                         int distorsion;
2511                         if (usbvision->bridgeType == BRIDGE_NT1004 || usbvision->bridgeType == BRIDGE_NT1005) {
2512                                 buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100);      // PCM Threshold 1
2513                                 buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100);       // PCM Threshold 2
2514                                 distorsion = 7 + 248 * usbvision->comprLevel / 100;
2515                                 buffer[2] = (unsigned char)(distorsion & 0xFF);                         // Average distorsion Threshold (inter)
2516                                 buffer[3] = (unsigned char)(distorsion & 0xFF);                         // Average distorsion Threshold (intra)
2517                                 distorsion = 1 + 42 * usbvision->comprLevel / 100;
2518                                 buffer[4] = (unsigned char)(distorsion & 0xFF);                         // Maximum distorsion Threshold (inter)
2519                                 buffer[5] = (unsigned char)(distorsion & 0xFF);                         // Maximum distorsion Threshold (intra)
2520                         }
2521                         else { //BRIDGE_NT1003
2522                                 buffer[0] = (unsigned char)(4 + 16 * usbvision->comprLevel / 100);      // PCM threshold 1
2523                                 buffer[1] = (unsigned char)(4 + 8 * usbvision->comprLevel / 100);       // PCM threshold 2
2524                                 distorsion = 2 + 253 * usbvision->comprLevel / 100;
2525                                 buffer[2] = (unsigned char)(distorsion & 0xFF);                         // distorsion threshold bit0-7
2526                                 buffer[3] = 0;  //(unsigned char)((distorsion >> 8) & 0x0F);            // distorsion threshold bit 8-11
2527                                 distorsion = 0 + 43 * usbvision->comprLevel / 100;
2528                                 buffer[4] = (unsigned char)(distorsion & 0xFF);                         // maximum distorsion bit0-7
2529                                 buffer[5] = 0; //(unsigned char)((distorsion >> 8) & 0x01);             // maximum distorsion bit 8
2530                         }
2531                         errCode = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6);
2532                         if (errCode == 0){
2533                                 PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0],
2534                                                                 buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]);
2535                                 usbvision->lastComprLevel = usbvision->comprLevel;
2536                         }
2537                 }
2538         }
2539         return errCode;
2540 }
2541
2542 static int usbvision_request_intra (struct usb_usbvision *usbvision)
2543 {
2544         int errCode = 0;
2545         unsigned char buffer[1];
2546
2547         PDEBUG(DBG_IRQ, "");
2548         usbvision->requestIntra = 1;
2549         buffer[0] = 1;
2550         usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
2551         return errCode;
2552 }
2553
2554 static int usbvision_unrequest_intra (struct usb_usbvision *usbvision)
2555 {
2556         int errCode = 0;
2557         unsigned char buffer[1];
2558
2559         PDEBUG(DBG_IRQ, "");
2560         usbvision->requestIntra = 0;
2561         buffer[0] = 0;
2562         usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1);
2563         return errCode;
2564 }
2565
2566 /* ----------------------------------------------------------------------- */
2567 /* I2C functions                                                           */
2568 /* ----------------------------------------------------------------------- */
2569
2570 static void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,
2571                              void *arg)
2572 {
2573         BUG_ON(NULL == usbvision->i2c_adap.algo_data);
2574         i2c_clients_command(&usbvision->i2c_adap, cmd, arg);
2575 }
2576
2577 static int attach_inform(struct i2c_client *client)
2578 {
2579         struct usb_usbvision *usbvision;
2580
2581         usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
2582
2583         switch (client->addr << 1) {
2584                 case 0x43:
2585                 case 0x4b:
2586                 {
2587                         struct tuner_setup tun_setup;
2588
2589                         tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
2590                         tun_setup.type = TUNER_TDA9887;
2591                         tun_setup.addr = client->addr;
2592
2593                         call_i2c_clients(usbvision, TUNER_SET_TYPE_ADDR, &tun_setup);
2594
2595                         break;
2596                 }
2597                 case 0x42:
2598                         PDEBUG(DBG_I2C,"attach_inform: saa7114 detected.\n");
2599                         break;
2600                 case 0x4a:
2601                         PDEBUG(DBG_I2C,"attach_inform: saa7113 detected.\n");
2602                         break;
2603                 case 0xa0:
2604                         PDEBUG(DBG_I2C,"attach_inform: eeprom detected.\n");
2605                         break;
2606
2607                 default:
2608                         PDEBUG(DBG_I2C,"attach inform: detected I2C address %x\n", client->addr << 1);
2609                         {
2610                                 struct tuner_setup tun_setup;
2611
2612                                 usbvision->tuner_addr = client->addr;
2613
2614                                 if ((usbvision->have_tuner) && (usbvision->tuner_type != -1)) {
2615                                         tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
2616                                         tun_setup.type = usbvision->tuner_type;
2617                                         tun_setup.addr = usbvision->tuner_addr;
2618                                         call_i2c_clients(usbvision, TUNER_SET_TYPE_ADDR, &tun_setup);
2619                                 }
2620                         }
2621                         break;
2622         }
2623         return 0;
2624 }
2625
2626 static int detach_inform(struct i2c_client *client)
2627 {
2628         struct usb_usbvision *usbvision;
2629
2630         #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
2631                 usbvision = (struct usb_usbvision *)client->adapter->data;
2632         #else
2633                 usbvision = (struct usb_usbvision *)i2c_get_adapdata(client->adapter);
2634         #endif
2635
2636         PDEBUG(DBG_I2C, "usbvision[%d] detaches %s", usbvision->nr, client->name);
2637         return 0;
2638 }
2639
2640 static int
2641 usbvision_i2c_read_max4(struct usb_usbvision *usbvision, unsigned char addr,
2642                      char *buf, short len)
2643 {
2644         int rc, retries;
2645
2646         for (retries = 5;;) {
2647                 rc = usbvision_write_reg(usbvision, USBVISION_SER_ADRS, addr);
2648                 if (rc < 0)
2649                         return rc;
2650
2651                 /* Initiate byte read cycle                    */
2652                 /* USBVISION_SER_CONT <- d0-d2 n. of bytes to r/w */
2653                 /*                    d3 0=Wr 1=Rd             */
2654                 rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
2655                                       (len & 0x07) | 0x18);
2656                 if (rc < 0)
2657                         return rc;
2658
2659                 /* Test for Busy and ACK */
2660                 do {
2661                         /* USBVISION_SER_CONT -> d4 == 0 busy */
2662                         rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
2663                 } while (rc > 0 && ((rc & 0x10) != 0)); /* Retry while busy */
2664                 if (rc < 0)
2665                         return rc;
2666
2667                 /* USBVISION_SER_CONT -> d5 == 1 Not ack */
2668                 if ((rc & 0x20) == 0)   /* Ack? */
2669                         break;
2670
2671                 /* I2C abort */
2672                 rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
2673                 if (rc < 0)
2674                         return rc;
2675
2676                 if (--retries < 0)
2677                         return -1;
2678         }
2679
2680         switch (len) {
2681         case 4:
2682                 buf[3] = usbvision_read_reg(usbvision, USBVISION_SER_DAT4);
2683         case 3:
2684                 buf[2] = usbvision_read_reg(usbvision, USBVISION_SER_DAT3);
2685         case 2:
2686                 buf[1] = usbvision_read_reg(usbvision, USBVISION_SER_DAT2);
2687         case 1:
2688                 buf[0] = usbvision_read_reg(usbvision, USBVISION_SER_DAT1);
2689                 break;
2690         default:
2691                 printk(KERN_ERR
2692                        "usbvision_i2c_read_max4: buffer length > 4\n");
2693         }
2694
2695         if (debug & DBG_I2C) {
2696                 int idx;
2697                 for (idx = 0; idx < len; idx++) {
2698                         PDEBUG(DBG_I2C, "read %x from address %x", (unsigned char)buf[idx], addr);
2699                 }
2700         }
2701         return len;
2702 }
2703
2704
2705 static int usbvision_i2c_write_max4(struct usb_usbvision *usbvision,
2706                                  unsigned char addr, const char *buf,
2707                                  short len)
2708 {
2709         int rc, retries;
2710         int i;
2711         unsigned char value[6];
2712         unsigned char ser_cont;
2713
2714         ser_cont = (len & 0x07) | 0x10;
2715
2716         value[0] = addr;
2717         value[1] = ser_cont;
2718         for (i = 0; i < len; i++)
2719                 value[i + 2] = buf[i];
2720
2721         for (retries = 5;;) {
2722                 rc = usb_control_msg(usbvision->dev,
2723                                      usb_sndctrlpipe(usbvision->dev, 1),
2724                                      USBVISION_OP_CODE,
2725                                      USB_DIR_OUT | USB_TYPE_VENDOR |
2726                                      USB_RECIP_ENDPOINT, 0,
2727                                      (__u16) USBVISION_SER_ADRS, value,
2728                                      len + 2, HZ);
2729
2730                 if (rc < 0)
2731                         return rc;
2732
2733                 rc = usbvision_write_reg(usbvision, USBVISION_SER_CONT,
2734                                       (len & 0x07) | 0x10);
2735                 if (rc < 0)
2736                         return rc;
2737
2738                 /* Test for Busy and ACK */
2739                 do {
2740                         rc = usbvision_read_reg(usbvision, USBVISION_SER_CONT);
2741                 } while (rc > 0 && ((rc & 0x10) != 0)); /* Retry while busy */
2742                 if (rc < 0)
2743                         return rc;
2744
2745                 if ((rc & 0x20) == 0)   /* Ack? */
2746                         break;
2747
2748                 /* I2C abort */
2749                 usbvision_write_reg(usbvision, USBVISION_SER_CONT, 0x00);
2750
2751                 if (--retries < 0)
2752                         return -1;
2753
2754         }
2755
2756         if (debug & DBG_I2C) {
2757                 int idx;
2758                 for (idx = 0; idx < len; idx++) {
2759                         PDEBUG(DBG_I2C, "wrote %x at address %x", (unsigned char)buf[idx], addr);
2760                 }
2761         }
2762         return len;
2763 }
2764
2765 static int usbvision_i2c_write(void *data, unsigned char addr, char *buf,
2766                             short len)
2767 {
2768         char *bufPtr = buf;
2769         int retval;
2770         int wrcount = 0;
2771         int count;
2772         int maxLen = 4;
2773         struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
2774
2775         while (len > 0) {
2776                 count = (len > maxLen) ? maxLen : len;
2777                 retval = usbvision_i2c_write_max4(usbvision, addr, bufPtr, count);
2778                 if (retval > 0) {
2779                         len -= count;
2780                         bufPtr += count;
2781                         wrcount += count;
2782                 } else
2783                         return (retval < 0) ? retval : -EFAULT;
2784         }
2785         return wrcount;
2786 }
2787
2788 static int usbvision_i2c_read(void *data, unsigned char addr, char *buf,
2789                            short len)
2790 {
2791         char temp[4];
2792         int retval, i;
2793         int rdcount = 0;
2794         int count;
2795         struct usb_usbvision *usbvision = (struct usb_usbvision *) data;
2796
2797         while (len > 0) {
2798                 count = (len > 3) ? 4 : len;
2799                 retval = usbvision_i2c_read_max4(usbvision, addr, temp, count);
2800                 if (retval > 0) {
2801                         for (i = 0; i < len; i++)
2802                                 buf[rdcount + i] = temp[i];
2803                         len -= count;
2804                         rdcount += count;
2805                 } else
2806                         return (retval < 0) ? retval : -EFAULT;
2807         }
2808         return rdcount;
2809 }
2810
2811 static struct i2c_algo_usb_data i2c_algo_template = {
2812         .data           = NULL,
2813         .inb            = usbvision_i2c_read,
2814         .outb           = usbvision_i2c_write,
2815         .udelay         = 10,
2816         .mdelay         = 10,
2817         .timeout        = 100,
2818 };
2819
2820 static struct i2c_adapter i2c_adap_template = {
2821         .owner             = THIS_MODULE,
2822         .name              = "usbvision",
2823         .id                = I2C_HW_B_BT848, /* FIXME */
2824         .algo              = NULL,
2825         .algo_data         = NULL,
2826         .client_register   = attach_inform,
2827         .client_unregister = detach_inform,
2828 #if defined (I2C_ADAP_CLASS_TV_ANALOG)
2829         .class             = I2C_ADAP_CLASS_TV_ANALOG,
2830 #elif defined (I2C_CLASS_TV_ANALOG)
2831         .class             = I2C_CLASS_TV_ANALOG,
2832 #endif
2833 };
2834
2835 static struct i2c_client i2c_client_template = {
2836         .name           = "usbvision internal",
2837         .flags          = 0,
2838         .addr           = 0,
2839         .adapter        = NULL,
2840         .driver         = NULL,
2841 };
2842
2843 static int usbvision_init_i2c(struct usb_usbvision *usbvision)
2844 {
2845         memcpy(&usbvision->i2c_adap, &i2c_adap_template,
2846                sizeof(struct i2c_adapter));
2847         memcpy(&usbvision->i2c_algo, &i2c_algo_template,
2848                sizeof(struct i2c_algo_usb_data));
2849         memcpy(&usbvision->i2c_client, &i2c_client_template,
2850                sizeof(struct i2c_client));
2851
2852         sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),
2853                 " #%d", usbvision->vdev->minor & 0x1f);
2854         PDEBUG(DBG_I2C, "Adaptername: %s", usbvision->i2c_adap.name);
2855
2856         i2c_set_adapdata(&usbvision->i2c_adap, usbvision);
2857         i2c_set_clientdata(&usbvision->i2c_client, usbvision);
2858         i2c_set_algo_usb_data(&usbvision->i2c_algo, usbvision);
2859
2860         usbvision->i2c_adap.algo_data = &usbvision->i2c_algo;
2861         usbvision->i2c_client.adapter = &usbvision->i2c_adap;
2862
2863         if (usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_IIC_LRNACK) < 0) {
2864                 printk(KERN_ERR "usbvision_init_i2c: can't wirte reg\n");
2865                 return -EBUSY;
2866         }
2867
2868 #ifdef CONFIG_KMOD
2869         /* Request the load of the i2c modules we need */
2870         if (autoload) {
2871                 switch (usbvision_device_data[usbvision->DevModel].Codec) {
2872                         case CODEC_SAA7113:
2873                                 request_module("saa7115");
2874                                 break;
2875                         case CODEC_SAA7111:
2876                                 request_module("saa7115");
2877                                 break;
2878                 }
2879                 if (usbvision_device_data[usbvision->DevModel].Tuner == 1) {
2880                         request_module("tuner");
2881                 }
2882         }
2883 #endif
2884
2885         return usbvision_i2c_usb_add_bus(&usbvision->i2c_adap);
2886 }
2887
2888
2889 /****************************/
2890 /* usbvision utility functions */
2891 /****************************/
2892
2893 static int usbvision_power_off(struct usb_usbvision *usbvision)
2894 {
2895         int errCode = 0;
2896
2897         PDEBUG(DBG_FUNC, "");
2898
2899         errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
2900         if (errCode == 1) {
2901                 usbvision->power = 0;
2902         }
2903         PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode!=1)?"ERROR":"power is off", errCode);
2904         return errCode;
2905 }
2906
2907
2908 // to call usbvision_power_off from task queue
2909 static void call_usbvision_power_off(void *_usbvision)
2910 {
2911         struct usb_usbvision *usbvision = _usbvision;
2912
2913         PDEBUG(DBG_FUNC, "");
2914         down_interruptible(&usbvision->lock);
2915         if(usbvision->user == 0) {
2916                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
2917                 usbvision_power_off(usbvision);
2918                 usbvision->initialized = 0;
2919         }
2920         up(&usbvision->lock);
2921 }
2922
2923
2924 /*
2925  * usbvision_set_video_format()
2926  *
2927  */
2928 static int usbvision_set_video_format(struct usb_usbvision *usbvision, int format)
2929 {
2930         static const char proc[] = "usbvision_set_video_format";
2931         int rc;
2932         unsigned char value[2];
2933
2934         if (!USBVISION_IS_OPERATIONAL(usbvision))
2935                 return 0;
2936
2937         PDEBUG(DBG_FUNC, "isocMode %#02x", format);
2938
2939         if ((format != ISOC_MODE_YUV422)
2940             && (format != ISOC_MODE_YUV420)
2941             && (format != ISOC_MODE_COMPRESS)) {
2942                 printk(KERN_ERR "usbvision: unknown video format %02x, using default YUV420",
2943                        format);
2944                 format = ISOC_MODE_YUV420;
2945         }
2946         value[0] = 0x0A;  //TODO: See the effect of the filter
2947         value[1] = format;
2948         rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
2949                              USBVISION_OP_CODE,
2950                              USB_DIR_OUT | USB_TYPE_VENDOR |
2951                              USB_RECIP_ENDPOINT, 0,
2952                              (__u16) USBVISION_FILT_CONT, value, 2, HZ);
2953
2954         if (rc < 0) {
2955                 printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - "
2956                        "reconnect or reload driver.\n", proc, rc);
2957         }
2958         usbvision->isocMode = format;
2959         return rc;
2960 }
2961
2962 /*
2963  * usbvision_set_output()
2964  *
2965  */
2966
2967 static int usbvision_set_output(struct usb_usbvision *usbvision, int width,
2968                                   int height)
2969 {
2970         int errCode = 0;
2971         int UsbWidth, UsbHeight;
2972         unsigned int frameRate=0, frameDrop=0;
2973         unsigned char value[4];
2974
2975         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
2976                 return 0;
2977         }
2978
2979         if (width > MAX_USB_WIDTH) {
2980                 UsbWidth = width / 2;
2981                 usbvision->stretch_width = 2;
2982         }
2983         else {
2984                 UsbWidth = width;
2985                 usbvision->stretch_width = 1;
2986         }
2987
2988         if (height > MAX_USB_HEIGHT) {
2989                 UsbHeight = height / 2;
2990                 usbvision->stretch_height = 2;
2991         }
2992         else {
2993                 UsbHeight = height;
2994                 usbvision->stretch_height = 1;
2995         }
2996
2997         RESTRICT_TO_RANGE(UsbWidth, MIN_FRAME_WIDTH, MAX_USB_WIDTH);
2998         UsbWidth &= ~(MIN_FRAME_WIDTH-1);
2999         RESTRICT_TO_RANGE(UsbHeight, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT);
3000         UsbHeight &= ~(1);
3001
3002         PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d",
3003                                                 UsbWidth, UsbHeight, width, height,
3004                                                 usbvision->stretch_width, usbvision->stretch_height);
3005
3006         /* I'll not rewrite the same values */
3007         if ((UsbWidth != usbvision->curwidth) || (UsbHeight != usbvision->curheight)) {
3008                 value[0] = UsbWidth & 0xff;             //LSB
3009                 value[1] = (UsbWidth >> 8) & 0x03;      //MSB
3010                 value[2] = UsbHeight & 0xff;            //LSB
3011                 value[3] = (UsbHeight >> 8) & 0x03;     //MSB
3012
3013                 errCode = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
3014                              USBVISION_OP_CODE,
3015                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT,
3016                                  0, (__u16) USBVISION_LXSIZE_O, value, 4, HZ);
3017
3018                 if (errCode < 0) {
3019                         err("%s failed: error %d", __FUNCTION__, errCode);
3020                         return errCode;
3021                 }
3022                 usbvision->curwidth = usbvision->stretch_width * UsbWidth;
3023                 usbvision->curheight = usbvision->stretch_height * UsbHeight;
3024         }
3025
3026         if (usbvision->isocMode == ISOC_MODE_YUV422) {
3027                 frameRate = (usbvision->isocPacketSize * 1000) / (UsbWidth * UsbHeight * 2);
3028         }
3029         else if (usbvision->isocMode == ISOC_MODE_YUV420) {
3030                 frameRate = (usbvision->isocPacketSize * 1000) / ((UsbWidth * UsbHeight * 12) / 8);
3031         }
3032         else {
3033                 frameRate = FRAMERATE_MAX;
3034         }
3035
3036         if (usbvision->tvnorm->id & V4L2_STD_625_50) {
3037                 frameDrop = frameRate * 32 / 25 - 1;
3038         }
3039         else if (usbvision->tvnorm->id & V4L2_STD_525_60) {
3040                 frameDrop = frameRate * 32 / 30 - 1;
3041         }
3042
3043         RESTRICT_TO_RANGE(frameDrop, FRAMERATE_MIN, FRAMERATE_MAX);
3044
3045         PDEBUG(DBG_FUNC, "frameRate %d fps, frameDrop %d", frameRate, frameDrop);
3046
3047         frameDrop = FRAMERATE_MAX;      // We can allow the maximum here, because dropping is controlled
3048
3049         /* frameDrop = 7; => framePhase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ...
3050                 => frameSkip = 4;
3051                 => frameRate = (7 + 1) * 25 / 32 = 200 / 32 = 6.25;
3052
3053            frameDrop = 9; => framePhase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ...
3054             => frameSkip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ...
3055                 => frameRate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125;
3056         */
3057         errCode = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frameDrop);
3058         return errCode;
3059 }
3060
3061
3062 /*
3063  * usbvision_empty_framequeues()
3064  * prepare queues for incoming and outgoing frames
3065  */
3066 static void usbvision_empty_framequeues(struct usb_usbvision *usbvision)
3067 {
3068         u32 i;
3069
3070         INIT_LIST_HEAD(&(usbvision->inqueue));
3071         INIT_LIST_HEAD(&(usbvision->outqueue));
3072
3073         for (i = 0; i < USBVISION_NUMFRAMES; i++) {
3074                 usbvision->frame[i].grabstate = FrameState_Unused;
3075                 usbvision->frame[i].bytes_read = 0;
3076         }
3077 }
3078
3079 /*
3080  * usbvision_stream_interrupt()
3081  * stops streaming
3082  */
3083 static int usbvision_stream_interrupt(struct usb_usbvision *usbvision)
3084 {
3085         int ret = 0;
3086
3087         /* stop reading from the device */
3088
3089         usbvision->streaming = Stream_Interrupt;
3090         ret = wait_event_timeout(usbvision->wait_stream,
3091                                  (usbvision->streaming == Stream_Idle),
3092                                  msecs_to_jiffies(USBVISION_NUMSBUF*USBVISION_URB_FRAMES));
3093         return ret;
3094 }
3095
3096 /*
3097  * usbvision_set_compress_params()
3098  *
3099  */
3100
3101 static int usbvision_set_compress_params(struct usb_usbvision *usbvision)
3102 {
3103         static const char proc[] = "usbvision_set_compresion_params: ";
3104         int rc;
3105         unsigned char value[6];
3106
3107         value[0] = 0x0F;    // Intra-Compression cycle
3108         value[1] = 0x01;    // Reg.45 one line per strip
3109         value[2] = 0x00;    // Reg.46 Force intra mode on all new frames
3110         value[3] = 0x00;    // Reg.47 FORCE_UP <- 0 normal operation (not force)
3111         value[4] = 0xA2;    // Reg.48 BUF_THR I'm not sure if this does something in not compressed mode.
3112         value[5] = 0x00;    // Reg.49 DVI_YUV This has nothing to do with compression
3113
3114         //catched values for NT1004
3115         // value[0] = 0xFF; // Never apply intra mode automatically
3116         // value[1] = 0xF1; // Use full frame height for virtual strip width; One line per strip
3117         // value[2] = 0x01; // Force intra mode on all new frames
3118         // value[3] = 0x00; // Strip size 400 Bytes; do not force up
3119         // value[4] = 0xA2; //
3120         if (!USBVISION_IS_OPERATIONAL(usbvision))
3121                 return 0;
3122
3123         rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
3124                              USBVISION_OP_CODE,
3125                              USB_DIR_OUT | USB_TYPE_VENDOR |
3126                              USB_RECIP_ENDPOINT, 0,
3127                              (__u16) USBVISION_INTRA_CYC, value, 5, HZ);
3128
3129         if (rc < 0) {
3130                 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
3131                        "reconnect or reload driver.\n", proc, rc);
3132                 return rc;
3133         }
3134
3135         if (usbvision->bridgeType == BRIDGE_NT1004) {
3136                 value[0] =  20; // PCM Threshold 1
3137                 value[1] =  12; // PCM Threshold 2
3138                 value[2] = 255; // Distorsion Threshold inter
3139                 value[3] = 255; // Distorsion Threshold intra
3140                 value[4] =  43; // Max Distorsion inter
3141                 value[5] =  43; // Max Distorsion intra
3142         }
3143         else {
3144                 value[0] =  20; // PCM Threshold 1
3145                 value[1] =  12; // PCM Threshold 2
3146                 value[2] = 255; // Distorsion Threshold d7-d0
3147                 value[3] =   0; // Distorsion Threshold d11-d8
3148                 value[4] =  43; // Max Distorsion d7-d0
3149                 value[5] =   0; // Max Distorsion d8
3150         }
3151
3152         if (!USBVISION_IS_OPERATIONAL(usbvision))
3153                 return 0;
3154
3155         rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
3156                              USBVISION_OP_CODE,
3157                              USB_DIR_OUT | USB_TYPE_VENDOR |
3158                              USB_RECIP_ENDPOINT, 0,
3159                              (__u16) USBVISION_PCM_THR1, value, 6, HZ);
3160
3161         if (rc < 0) {
3162                 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
3163                        "reconnect or reload driver.\n", proc, rc);
3164                 return rc;
3165         }
3166
3167
3168         return rc;
3169 }
3170
3171
3172 /*
3173  * usbvision_set_input()
3174  *
3175  * Set the input (saa711x, ...) size x y and other misc input params
3176  * I've no idea if this parameters are right
3177  *
3178  */
3179 static int usbvision_set_input(struct usb_usbvision *usbvision)
3180 {
3181         static const char proc[] = "usbvision_set_input: ";
3182         int rc;
3183         unsigned char value[8];
3184         unsigned char dvi_yuv_value;
3185
3186         if (!USBVISION_IS_OPERATIONAL(usbvision))
3187                 return 0;
3188
3189         /* Set input format expected from decoder*/
3190         if (usbvision_device_data[usbvision->DevModel].Vin_Reg1 >= 0) {
3191                 value[0] = usbvision_device_data[usbvision->DevModel].Vin_Reg1 & 0xff;
3192         } else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
3193                 /* SAA7113 uses 8 bit output */
3194                 value[0] = USBVISION_8_422_SYNC;
3195         } else {
3196                 /* I'm sure only about d2-d0 [010] 16 bit 4:2:2 usin sync pulses
3197                  * as that is how saa7111 is configured */
3198                 value[0] = USBVISION_16_422_SYNC;
3199                 /* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/
3200         }
3201
3202         rc = usbvision_write_reg(usbvision, USBVISION_VIN_REG1, value[0]);
3203         if (rc < 0) {
3204                 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
3205                        "reconnect or reload driver.\n", proc, rc);
3206                 return rc;
3207         }
3208
3209
3210         if (usbvision->tvnorm->id & V4L2_STD_PAL) {
3211                 value[0] = 0xC0;
3212                 value[1] = 0x02;        //0x02C0 -> 704 Input video line length
3213                 value[2] = 0x20;
3214                 value[3] = 0x01;        //0x0120 -> 288 Input video n. of lines
3215                 value[4] = 0x60;
3216                 value[5] = 0x00;        //0x0060 -> 96 Input video h offset
3217                 value[6] = 0x16;
3218                 value[7] = 0x00;        //0x0016 -> 22 Input video v offset
3219         } else if (usbvision->tvnorm->id & V4L2_STD_SECAM) {
3220                 value[0] = 0xC0;
3221                 value[1] = 0x02;        //0x02C0 -> 704 Input video line length
3222                 value[2] = 0x20;
3223                 value[3] = 0x01;        //0x0120 -> 288 Input video n. of lines
3224                 value[4] = 0x01;
3225                 value[5] = 0x00;        //0x0001 -> 01 Input video h offset
3226                 value[6] = 0x01;
3227                 value[7] = 0x00;        //0x0001 -> 01 Input video v offset
3228         } else {        /* V4L2_STD_NTSC */
3229                 value[0] = 0xD0;
3230                 value[1] = 0x02;        //0x02D0 -> 720 Input video line length
3231                 value[2] = 0xF0;
3232                 value[3] = 0x00;        //0x00F0 -> 240 Input video number of lines
3233                 value[4] = 0x50;
3234                 value[5] = 0x00;        //0x0050 -> 80 Input video h offset
3235                 value[6] = 0x10;
3236                 value[7] = 0x00;        //0x0010 -> 16 Input video v offset
3237         }
3238
3239         if (usbvision_device_data[usbvision->DevModel].X_Offset >= 0) {
3240                 value[4]=usbvision_device_data[usbvision->DevModel].X_Offset & 0xff;
3241                 value[5]=(usbvision_device_data[usbvision->DevModel].X_Offset & 0x0300) >> 8;
3242         }
3243
3244         if (usbvision_device_data[usbvision->DevModel].Y_Offset >= 0) {
3245                 value[6]=usbvision_device_data[usbvision->DevModel].Y_Offset & 0xff;
3246                 value[7]=(usbvision_device_data[usbvision->DevModel].Y_Offset & 0x0300) >> 8;
3247         }
3248
3249         rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
3250                              USBVISION_OP_CODE, /* USBVISION specific code */
3251                              USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0,
3252                              (__u16) USBVISION_LXSIZE_I, value, 8, HZ);
3253         if (rc < 0) {
3254                 printk(KERN_ERR "%sERROR=%d. USBVISION stopped - "
3255                        "reconnect or reload driver.\n", proc, rc);
3256                 return rc;
3257         }
3258
3259
3260         dvi_yuv_value = 0x00;   /* U comes after V, Ya comes after U/V, Yb comes after Yb */
3261
3262         if(usbvision_device_data[usbvision->DevModel].Dvi_yuv >= 0){
3263                 dvi_yuv_value = usbvision_device_data[usbvision->DevModel].Dvi_yuv & 0xff;
3264         }
3265         else if(usbvision_device_data[usbvision->DevModel].Codec == CODEC_SAA7113) {
3266         /* This changes as the fine sync control changes. Further investigation necessary */
3267                 dvi_yuv_value = 0x06;
3268         }
3269
3270         return (usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value));
3271 }
3272
3273
3274 /*
3275  * usbvision_set_dram_settings()
3276  *
3277  * Set the buffer address needed by the usbvision dram to operate
3278  * This values has been taken with usbsnoop.
3279  *
3280  */
3281
3282 static int usbvision_set_dram_settings(struct usb_usbvision *usbvision)
3283 {
3284         int rc;
3285         unsigned char value[8];
3286
3287         if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
3288                 value[0] = 0x42;
3289                 value[1] = 0x71;
3290                 value[2] = 0xff;
3291                 value[3] = 0x00;
3292                 value[4] = 0x98;
3293                 value[5] = 0xe0;
3294                 value[6] = 0x71;
3295                 value[7] = 0xff;
3296                 // UR:  0x0E200-0x3FFFF = 204288 Words (1 Word = 2 Byte)
3297                 // FDL: 0x00000-0x0E099 =  57498 Words
3298                 // VDW: 0x0E3FF-0x3FFFF
3299         }
3300         else {
3301                 value[0] = 0x42;
3302                 value[1] = 0x00;
3303                 value[2] = 0xff;
3304                 value[3] = 0x00;
3305                 value[4] = 0x00;
3306                 value[5] = 0x00;
3307                 value[6] = 0x00;
3308                 value[7] = 0xff;
3309         }
3310         /* These are the values of the address of the video buffer,
3311          * they have to be loaded into the USBVISION_DRM_PRM1-8
3312          *
3313          * Start address of video output buffer for read:       drm_prm1-2 -> 0x00000
3314          * End address of video output buffer for read:         drm_prm1-3 -> 0x1ffff
3315          * Start address of video frame delay buffer:           drm_prm1-4 -> 0x20000
3316          *    Only used in compressed mode
3317          * End address of video frame delay buffer:             drm_prm1-5-6 -> 0x3ffff
3318          *    Only used in compressed mode
3319          * Start address of video output buffer for write:      drm_prm1-7 -> 0x00000
3320          * End address of video output buffer for write:        drm_prm1-8 -> 0x1ffff
3321          */
3322
3323         if (!USBVISION_IS_OPERATIONAL(usbvision))
3324                 return 0;
3325
3326         rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1),
3327                              USBVISION_OP_CODE, /* USBVISION specific code */
3328                              USB_DIR_OUT | USB_TYPE_VENDOR |
3329                              USB_RECIP_ENDPOINT, 0,
3330                              (__u16) USBVISION_DRM_PRM1, value, 8, HZ);
3331
3332         if (rc < 0) {
3333                 err("%sERROR=%d", __FUNCTION__, rc);
3334                 return rc;
3335         }
3336
3337         /* Restart the video buffer logic */
3338         if ((rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR |
3339                                    USBVISION_RES_FDL | USBVISION_RES_VDW)) < 0)
3340                 return rc;
3341         rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00);
3342
3343         return rc;
3344 }
3345
3346 /*
3347  * ()
3348  *
3349  * Power on the device, enables suspend-resume logic
3350  * &  reset the isoc End-Point
3351  *
3352  */
3353
3354 static int usbvision_power_on(struct usb_usbvision *usbvision)
3355 {
3356         int errCode = 0;
3357
3358         PDEBUG(DBG_FUNC, "");
3359
3360         usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN);
3361         usbvision_write_reg(usbvision, USBVISION_PWR_REG,
3362                          USBVISION_SSPND_EN | USBVISION_RES2);
3363         usbvision_write_reg(usbvision, USBVISION_PWR_REG,
3364                          USBVISION_SSPND_EN | USBVISION_PWR_VID);
3365         errCode = usbvision_write_reg(usbvision, USBVISION_PWR_REG,
3366                                                 USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2);
3367         if (errCode == 1) {
3368                 usbvision->power = 1;
3369         }
3370         PDEBUG(DBG_FUNC, "%s: errCode %d", (errCode<0)?"ERROR":"power is on", errCode);
3371         return errCode;
3372 }
3373
3374
3375 static void usbvision_powerOffTimer(unsigned long data)
3376 {
3377         struct usb_usbvision *usbvision = (void *) data;
3378
3379         PDEBUG(DBG_FUNC, "");
3380         del_timer(&usbvision->powerOffTimer);
3381         INIT_WORK(&usbvision->powerOffWork, call_usbvision_power_off, usbvision);
3382         (void) schedule_work(&usbvision->powerOffWork);
3383
3384 }
3385
3386
3387 /*
3388  * usbvision_begin_streaming()
3389  * Sure you have to put bit 7 to 0, if not incoming frames are droped, but no
3390  * idea about the rest
3391  */
3392 static int usbvision_begin_streaming(struct usb_usbvision *usbvision)
3393 {
3394         int errCode = 0;
3395
3396         if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
3397                 usbvision_init_compression(usbvision);
3398         }
3399         errCode = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, USBVISION_NOHVALID |
3400                                                                                 usbvision->Vin_Reg2_Preset);
3401         return errCode;
3402 }
3403
3404 /*
3405  * usbvision_restart_isoc()
3406  * Not sure yet if touching here PWR_REG make loose the config
3407  */
3408
3409 static int usbvision_restart_isoc(struct usb_usbvision *usbvision)
3410 {
3411         int ret;
3412
3413         if (
3414             (ret =
3415              usbvision_write_reg(usbvision, USBVISION_PWR_REG,
3416                               USBVISION_SSPND_EN | USBVISION_PWR_VID)) < 0)
3417                 return ret;
3418         if (
3419             (ret =
3420              usbvision_write_reg(usbvision, USBVISION_PWR_REG,
3421                               USBVISION_SSPND_EN | USBVISION_PWR_VID |
3422                               USBVISION_RES2)) < 0)
3423                 return ret;
3424         if (
3425             (ret =
3426              usbvision_write_reg(usbvision, USBVISION_VIN_REG2,
3427                               USBVISION_KEEP_BLANK | USBVISION_NOHVALID |
3428                                   usbvision->Vin_Reg2_Preset)) < 0) return ret;
3429
3430         /* TODO: schedule timeout */
3431         while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) && 0x01) != 1);
3432
3433         return 0;
3434 }
3435
3436 static int usbvision_audio_on(struct usb_usbvision *usbvision)
3437 {
3438         if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, usbvision->AudioChannel) < 0) {
3439                 printk(KERN_ERR "usbvision_audio_on: can't wirte reg\n");
3440                 return -1;
3441         }
3442         DEBUG(printk(KERN_DEBUG "usbvision_audio_on: channel %d\n", usbvision->AudioChannel));
3443         usbvision->AudioMute = 0;
3444         return 0;
3445 }
3446
3447 static int usbvision_audio_mute(struct usb_usbvision *usbvision)
3448 {
3449         if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, 0x03) < 0) {
3450                 printk(KERN_ERR "usbvision_audio_mute: can't wirte reg\n");
3451                 return -1;
3452         }
3453         DEBUG(printk(KERN_DEBUG "usbvision_audio_mute: audio mute\n"));
3454         usbvision->AudioMute = 1;
3455         return 0;
3456 }
3457
3458 static int usbvision_audio_off(struct usb_usbvision *usbvision)
3459 {
3460         if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) {
3461                 printk(KERN_ERR "usbvision_audio_off: can't wirte reg\n");
3462                 return -1;
3463         }
3464         DEBUG(printk(KERN_DEBUG "usbvision_audio_off: audio off\n"));
3465         usbvision->AudioMute = 0;
3466         usbvision->AudioChannel = USBVISION_AUDIO_MUTE;
3467         return 0;
3468 }
3469
3470 static int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel)
3471 {
3472         if (!usbvision->AudioMute) {
3473                 if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, AudioChannel) < 0) {
3474                         printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n");
3475                         return -1;
3476                 }
3477         }
3478         DEBUG(printk(KERN_DEBUG "usbvision_set_audio: channel %d\n", AudioChannel));
3479         usbvision->AudioChannel = AudioChannel;
3480         return 0;
3481 }
3482
3483 static int usbvision_setup(struct usb_usbvision *usbvision)
3484 {
3485         usbvision_set_video_format(usbvision, isocMode);
3486         usbvision_set_dram_settings(usbvision);
3487         usbvision_set_compress_params(usbvision);
3488         usbvision_set_input(usbvision);
3489         usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT);
3490         usbvision_restart_isoc(usbvision);
3491
3492         /* cosas del PCM */
3493         return USBVISION_IS_OPERATIONAL(usbvision);
3494 }
3495
3496
3497 /*
3498  * usbvision_init_isoc()
3499  *
3500  */
3501 static int usbvision_init_isoc(struct usb_usbvision *usbvision)
3502 {
3503         struct usb_device *dev = usbvision->dev;
3504         int bufIdx, errCode, regValue;
3505
3506         if (!USBVISION_IS_OPERATIONAL(usbvision))
3507                 return -EFAULT;
3508
3509         usbvision->curFrame = NULL;
3510         scratch_reset(usbvision);
3511
3512         /* Alternate interface 1 is is the biggest frame size */
3513         errCode = usb_set_interface(dev, usbvision->iface, usbvision->ifaceAltActive);
3514         if (errCode < 0) {
3515                 usbvision->last_error = errCode;
3516                 return -EBUSY;
3517         }
3518
3519         regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
3520         usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
3521         PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
3522
3523         usbvision->usb_bandwidth = regValue >> 1;
3524         PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
3525
3526
3527
3528         /* We double buffer the Iso lists */
3529
3530         for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
3531                 int j, k;
3532                 struct urb *urb;
3533
3534                 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
3535                         urb = usb_alloc_urb(USBVISION_URB_FRAMES);
3536                 #else
3537                         urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
3538                 #endif
3539                 if (urb == NULL) {
3540                         err("%s: usb_alloc_urb() failed", __FUNCTION__);
3541                         return -ENOMEM;
3542                 }
3543                 usbvision->sbuf[bufIdx].urb = urb;
3544                 urb->dev = dev;
3545                 urb->context = usbvision;
3546                 urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp);
3547         #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
3548                 urb->transfer_flags = USB_ISO_ASAP;
3549         #else
3550                 urb->transfer_flags = URB_ISO_ASAP;
3551                 urb->interval = 1;
3552         #endif
3553                 urb->transfer_buffer = usbvision->sbuf[bufIdx].data;
3554                 urb->complete = usbvision_isocIrq;
3555                 urb->number_of_packets = USBVISION_URB_FRAMES;
3556                 urb->transfer_buffer_length =
3557                     usbvision->isocPacketSize * USBVISION_URB_FRAMES;
3558                 for (j = k = 0; j < USBVISION_URB_FRAMES; j++,
3559                      k += usbvision->isocPacketSize) {
3560                         urb->iso_frame_desc[j].offset = k;
3561                         urb->iso_frame_desc[j].length = usbvision->isocPacketSize;
3562                 }
3563         }
3564
3565
3566         /* Submit all URBs */
3567         for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
3568                 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
3569                         errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb);
3570                 #else
3571                         errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb, GFP_KERNEL);
3572                 #endif
3573                 if (errCode) {
3574                         err("%s: usb_submit_urb(%d) failed: error %d", __FUNCTION__, bufIdx, errCode);
3575                 }
3576         }
3577
3578         usbvision->streaming = Stream_Idle;
3579         PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", __FUNCTION__, usbvision->video_endp);
3580         return 0;
3581 }
3582
3583 /*
3584  * usbvision_stop_isoc()
3585  *
3586  * This procedure stops streaming and deallocates URBs. Then it
3587  * activates zero-bandwidth alt. setting of the video interface.
3588  *
3589  */
3590 static void usbvision_stop_isoc(struct usb_usbvision *usbvision)
3591 {
3592         int bufIdx, errCode, regValue;
3593
3594         if ((usbvision->streaming == Stream_Off) || (usbvision->dev == NULL))
3595                 return;
3596
3597         /* Unschedule all of the iso td's */
3598         for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
3599                 usb_kill_urb(usbvision->sbuf[bufIdx].urb);
3600                 usb_free_urb(usbvision->sbuf[bufIdx].urb);
3601                 usbvision->sbuf[bufIdx].urb = NULL;
3602         }
3603
3604
3605         PDEBUG(DBG_ISOC, "%s: streaming=Stream_Off\n", __FUNCTION__);
3606         usbvision->streaming = Stream_Off;
3607
3608         if (!usbvision->remove_pending) {
3609
3610                 /* Set packet size to 0 */
3611                 errCode = usb_set_interface(usbvision->dev, usbvision->iface,
3612                                       usbvision->ifaceAltInactive);
3613                 if (errCode < 0) {
3614                         err("%s: usb_set_interface() failed: error %d", __FUNCTION__, errCode);
3615                         usbvision->last_error = errCode;
3616                 }
3617                 regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
3618                 usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
3619                 PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
3620
3621                 usbvision->usb_bandwidth = regValue >> 1;
3622                 PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
3623         }
3624 }
3625
3626 static int usbvision_muxsel(struct usb_usbvision *usbvision, int channel)
3627 {
3628         int mode[4];
3629         int audio[]= {1, 0, 0, 0};
3630         struct v4l2_routing route;
3631         //channel 0 is TV with audiochannel 1 (tuner mono)
3632         //channel 1 is Composite with audio channel 0 (line in)
3633         //channel 2 is S-Video with audio channel 0 (line in)
3634         //channel 3 is additional video inputs to the device with audio channel 0 (line in)
3635
3636         RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs);
3637         usbvision->ctl_input = channel;
3638           route.input = SAA7115_COMPOSITE1;
3639           call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
3640           call_i2c_clients(usbvision, VIDIOC_S_INPUT, &usbvision->ctl_input);
3641
3642         // set the new channel
3643         // Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video
3644         // Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red
3645
3646         switch (usbvision_device_data[usbvision->DevModel].Codec) {
3647                 case CODEC_SAA7113:
3648                         if (SwitchSVideoInput) { // To handle problems with S-Video Input for some devices.  Use SwitchSVideoInput parameter when loading the module.
3649                                 mode[2] = 1;
3650                         }
3651                         else {
3652                                 mode[2] = 7;
3653                         }
3654                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
3655                                 mode[0] = 0; mode[1] = 2; mode[3] = 3;  // Special for four input devices
3656                         }
3657                         else {
3658                                 mode[0] = 0; mode[1] = 2; //modes for regular saa7113 devices
3659                         }
3660                         break;
3661                 case CODEC_SAA7111:
3662                         mode[0] = 0; mode[1] = 1; mode[2] = 7; //modes for saa7111
3663                         break;
3664                 default:
3665                         mode[0] = 0; mode[1] = 1; mode[2] = 7; //default modes
3666         }
3667         route.input = mode[channel];
3668         call_i2c_clients(usbvision, VIDIOC_INT_S_VIDEO_ROUTING,&route);
3669         usbvision->channel = channel;
3670         usbvision_set_audio(usbvision, audio[channel]);
3671         return 0;
3672 }
3673
3674
3675 /*
3676  * usbvision_open()
3677  *
3678  * This is part of Video 4 Linux API. The driver can be opened by one
3679  * client only (checks internal counter 'usbvision->user'). The procedure
3680  * then allocates buffers needed for video processing.
3681  *
3682  */
3683 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
3684 {
3685         struct video_device *dev = video_devdata(file);
3686         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
3687         const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE;
3688         int i, errCode = 0;
3689
3690         PDEBUG(DBG_IO, "open");
3691
3692
3693         if (timer_pending(&usbvision->powerOffTimer)) {
3694                 del_timer(&usbvision->powerOffTimer);
3695         }
3696
3697         if (usbvision->user)
3698                 errCode = -EBUSY;
3699         else {
3700                 /* Clean pointers so we know if we allocated something */
3701                 for (i = 0; i < USBVISION_NUMSBUF; i++)
3702                         usbvision->sbuf[i].data = NULL;
3703
3704                 /* Allocate memory for the frame buffers */
3705                 usbvision->max_frame_size = MAX_FRAME_SIZE;
3706                 usbvision->fbuf_size = USBVISION_NUMFRAMES * usbvision->max_frame_size;
3707                 usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size);
3708                 usbvision->scratch = vmalloc(scratch_buf_size);
3709                 scratch_reset(usbvision);
3710                 if ((usbvision->fbuf == NULL) || (usbvision->scratch == NULL)) {
3711                         err("%s: unable to allocate %d bytes for fbuf and %d bytes for scratch",
3712                                         __FUNCTION__, usbvision->fbuf_size, scratch_buf_size);
3713                         errCode = -ENOMEM;
3714                 }
3715                 else {
3716                         spin_lock_init(&usbvision->queue_lock);
3717                         init_waitqueue_head(&usbvision->wait_frame);
3718                         init_waitqueue_head(&usbvision->wait_stream);
3719
3720                         /* Allocate all buffers */
3721                         for (i = 0; i < USBVISION_NUMFRAMES; i++) {
3722                                 usbvision->frame[i].index = i;
3723                                 usbvision->frame[i].grabstate = FrameState_Unused;
3724                                 usbvision->frame[i].data = usbvision->fbuf +
3725                                     i * MAX_FRAME_SIZE;
3726                                 /*
3727                                  * Set default sizes in case IOCTL
3728                                  * (VIDIOCMCAPTURE)
3729                                  * is not used (using read() instead).
3730                                  */
3731                                 usbvision->stretch_width = 1;
3732                                 usbvision->stretch_height = 1;
3733                                 usbvision->frame[i].width = usbvision->curwidth;
3734                                 usbvision->frame[i].height = usbvision->curheight;
3735                                 usbvision->frame[i].bytes_read = 0;
3736                         }
3737                         if (dga) { //set default for DGA
3738                                 usbvision->overlay_frame.grabstate = FrameState_Unused;
3739                                 usbvision->overlay_frame.scanstate = ScanState_Scanning;
3740                                 usbvision->overlay_frame.data = NULL;
3741                                 usbvision->overlay_frame.width = usbvision->curwidth;
3742                                 usbvision->overlay_frame.height = usbvision->curheight;
3743                                 usbvision->overlay_frame.bytes_read = 0;
3744                         }
3745                         for (i = 0; i < USBVISION_NUMSBUF; i++) {
3746                                 usbvision->sbuf[i].data = kzalloc(sb_size, GFP_KERNEL);
3747                                 if (usbvision->sbuf[i].data == NULL) {
3748                                         err("%s: unable to allocate %d bytes for sbuf", __FUNCTION__, sb_size);
3749                                         errCode = -ENOMEM;
3750                                         break;
3751                                 }
3752                         }
3753                 }
3754                 if ((!errCode) && (usbvision->isocMode==ISOC_MODE_COMPRESS)) {
3755                         int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2;
3756                         usbvision->IntraFrameBuffer = vmalloc(IFB_size);
3757                         if (usbvision->IntraFrameBuffer == NULL) {
3758                                 err("%s: unable to allocate %d for compr. frame buffer", __FUNCTION__, IFB_size);
3759                                 errCode = -ENOMEM;
3760                         }
3761
3762                 }
3763                 if (errCode) {
3764                         /* Have to free all that memory */
3765                         if (usbvision->fbuf != NULL) {
3766                                 usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
3767                                 usbvision->fbuf = NULL;
3768                         }
3769                         if (usbvision->scratch != NULL) {
3770                                 vfree(usbvision->scratch);
3771                                 usbvision->scratch = NULL;
3772                         }
3773                         for (i = 0; i < USBVISION_NUMSBUF; i++) {
3774                                 if (usbvision->sbuf[i].data != NULL) {
3775                                         kfree(usbvision->sbuf[i].data);
3776                                         usbvision->sbuf[i].data = NULL;
3777                                 }
3778                         }
3779                         if (usbvision->IntraFrameBuffer != NULL) {
3780                                 vfree(usbvision->IntraFrameBuffer);
3781                                 usbvision->IntraFrameBuffer = NULL;
3782                         }
3783                 }
3784         }
3785
3786         /* If so far no errors then we shall start the camera */
3787         if (!errCode) {
3788                 down(&usbvision->lock);
3789                 if (usbvision->power == 0) {
3790                         usbvision_power_on(usbvision);
3791                         usbvision_init_i2c(usbvision);
3792                 }
3793
3794                 /* Send init sequence only once, it's large! */
3795                 if (!usbvision->initialized) {
3796                         int setup_ok = 0;
3797                         setup_ok = usbvision_setup(usbvision);
3798                         if (setup_ok)
3799                                 usbvision->initialized = 1;
3800                         else
3801                                 errCode = -EBUSY;
3802                 }
3803
3804                 if (!errCode) {
3805                         usbvision_begin_streaming(usbvision);
3806                         errCode = usbvision_init_isoc(usbvision);
3807                         /* device needs to be initialized before isoc transfer */
3808                         usbvision_muxsel(usbvision,0);
3809                         usbvision->user++;
3810                 }
3811                 else {
3812                         if (PowerOnAtOpen) {
3813                                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
3814                                 usbvision_power_off(usbvision);
3815                                 usbvision->initialized = 0;
3816                         }
3817                 }
3818                 up(&usbvision->lock);
3819         }
3820
3821         if (errCode) {
3822         }
3823
3824         /* prepare queues */
3825         usbvision_empty_framequeues(usbvision);
3826
3827         PDEBUG(DBG_IO, "success");
3828         return errCode;
3829 }
3830
3831 /*
3832  * usbvision_v4l2_close()
3833  *
3834  * This is part of Video 4 Linux API. The procedure
3835  * stops streaming and deallocates all buffers that were earlier
3836  * allocated in usbvision_v4l2_open().
3837  *
3838  */
3839 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
3840 {
3841         struct video_device *dev = video_devdata(file);
3842         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
3843         int i;
3844
3845         PDEBUG(DBG_IO, "close");
3846         down(&usbvision->lock);
3847
3848         usbvision_audio_off(usbvision);
3849         usbvision_restart_isoc(usbvision);
3850         usbvision_stop_isoc(usbvision);
3851
3852         if (usbvision->IntraFrameBuffer != NULL) {
3853                 vfree(usbvision->IntraFrameBuffer);
3854                 usbvision->IntraFrameBuffer = NULL;
3855         }
3856
3857         usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
3858         vfree(usbvision->scratch);
3859         for (i = 0; i < USBVISION_NUMSBUF; i++)
3860                 kfree(usbvision->sbuf[i].data);
3861
3862         usbvision->user--;
3863
3864         if (PowerOnAtOpen) {
3865                 mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
3866                 usbvision->initialized = 0;
3867         }
3868
3869         up(&usbvision->lock);
3870
3871         if (usbvision->remove_pending) {
3872                 info("%s: Final disconnect", __FUNCTION__);
3873                 usbvision_release(usbvision);
3874         }
3875
3876         PDEBUG(DBG_IO, "success");
3877
3878
3879         return 0;
3880 }
3881
3882
3883 /*
3884  * usbvision_ioctl()
3885  *
3886  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
3887  *
3888  */
3889 static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
3890                                  unsigned int cmd, void *arg)
3891 {
3892         struct video_device *dev = video_devdata(file);
3893         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
3894
3895         if (!USBVISION_IS_OPERATIONAL(usbvision))
3896                 return -EFAULT;
3897
3898         //      if (debug & DBG_IOCTL) v4l_printk_ioctl(cmd);
3899
3900         switch (cmd) {
3901
3902 #ifdef CONFIG_VIDEO_ADV_DEBUG
3903                 /* ioctls to allow direct acces to the NT100x registers */
3904                 case VIDIOC_INT_G_REGISTER:
3905                 {
3906                         struct v4l2_register *reg = arg;
3907                         int errCode;
3908
3909                         if (reg->i2c_id != 0)
3910                                 return -EINVAL;
3911                         /* NT100x has a 8-bit register space */
3912                         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
3913                         if (errCode < 0) {
3914                                 err("%s: VIDIOC_INT_G_REGISTER failed: error %d", __FUNCTION__, errCode);
3915                         }
3916                         else {
3917                                 reg->val=(unsigned char)errCode;
3918                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_G_REGISTER reg=0x%02X, value=0x%02X",
3919                                                         (unsigned int)reg->reg, reg->val);
3920                                 errCode = 0; // No error
3921                         }
3922                         return errCode;
3923                 }
3924                 case VIDIOC_INT_S_REGISTER:
3925                 {
3926                         struct v4l2_register *reg = arg;
3927                         int errCode;
3928
3929                         if (reg->i2c_id != 0)
3930                                 return -EINVAL;
3931                         if (!capable(CAP_SYS_ADMIN))
3932                                 return -EPERM;
3933                         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
3934                         if (errCode < 0) {
3935                                 err("%s: VIDIOC_INT_S_REGISTER failed: error %d", __FUNCTION__, errCode);
3936                         }
3937                         else {
3938                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_S_REGISTER reg=0x%02X, value=0x%02X",
3939                                                         (unsigned int)reg->reg, reg->val);
3940                                 errCode = 0;
3941                         }
3942                         return 0;
3943                 }
3944 #endif
3945                 case VIDIOC_QUERYCAP:
3946                 {
3947                         struct v4l2_capability *vc=arg;
3948
3949                         memset(vc, 0, sizeof(*vc));
3950                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
3951                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
3952                                 sizeof(vc->card));
3953                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
3954                                 sizeof(vc->bus_info));
3955                         vc->version = USBVISION_DRIVER_VERSION;
3956                         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
3957                                 V4L2_CAP_AUDIO |
3958                                 V4L2_CAP_READWRITE |
3959                                 V4L2_CAP_STREAMING |
3960                                 (dga ? (V4L2_FBUF_CAP_LIST_CLIPPING | V4L2_CAP_VIDEO_OVERLAY) : 0) |
3961                                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
3962                         PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
3963                         return 0;
3964                 }
3965                 case VIDIOC_ENUMINPUT:
3966                 {
3967                         struct v4l2_input *vi = arg;
3968                         int chan;
3969
3970                         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
3971                                 return -EINVAL;
3972                         if (usbvision->have_tuner) {
3973                                 chan = vi->index;
3974                         }
3975                         else {
3976                                 chan = vi->index + 1; //skip Television string
3977                         }
3978                         switch(chan) {
3979                                 case 0:
3980                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
3981                                                 strcpy(vi->name, "White Video Input");
3982                                         }
3983                                         else {
3984                                                 strcpy(vi->name, "Television");
3985                                                 vi->type = V4L2_INPUT_TYPE_TUNER;
3986                                                 vi->audioset = 1;
3987                                                 vi->tuner = chan;
3988                                                 vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
3989                                         }
3990                                         break;
3991                                 case 1:
3992                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
3993                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
3994                                                 strcpy(vi->name, "Green Video Input");
3995                                         }
3996                                         else {
3997                                                 strcpy(vi->name, "Composite Video Input");
3998                                         }
3999                                         vi->std = V4L2_STD_PAL;
4000                                         break;
4001                                 case 2:
4002                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
4003                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
4004                                                 strcpy(vi->name, "Yellow Video Input");
4005                                         }
4006                                         else {
4007                                         strcpy(vi->name, "S-Video Input");
4008                                         }
4009                                         vi->std = V4L2_STD_PAL;
4010                                         break;
4011                                 case 3:
4012                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
4013                                         strcpy(vi->name, "Red Video Input");
4014                                         vi->std = V4L2_STD_PAL;
4015                                         break;
4016                         }
4017                         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);
4018                         return 0;
4019                 }
4020                 case VIDIOC_ENUMSTD:
4021                 {
4022                         struct v4l2_standard *e = arg;
4023                         unsigned int i;
4024                         int ret;
4025
4026                         i = e->index;
4027                         if (i >= TVNORMS)
4028                                 return -EINVAL;
4029                         ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
4030                                                        tvnorms[e->index].name);
4031                         e->index = i;
4032                         if (ret < 0)
4033                                 return ret;
4034                         return 0;
4035                 }
4036                 case VIDIOC_G_INPUT:
4037                 {
4038                         int *input = arg;
4039                         *input = usbvision->ctl_input;
4040                         return 0;
4041                 }
4042                 case VIDIOC_S_INPUT:
4043                 {
4044                         int *input = arg;
4045                         if ((*input >= usbvision->video_inputs) || (*input < 0) )
4046                                 return -EINVAL;
4047                         usbvision->ctl_input = *input;
4048
4049                         down(&usbvision->lock);
4050                         usbvision_muxsel(usbvision, usbvision->ctl_input);
4051                         usbvision_set_input(usbvision);
4052                         usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
4053                         up(&usbvision->lock);
4054                         return 0;
4055                 }
4056                 case VIDIOC_G_STD:
4057                 {
4058                         v4l2_std_id *id = arg;
4059
4060                         *id = usbvision->tvnorm->id;
4061
4062                         PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
4063                         return 0;
4064                 }
4065                 case VIDIOC_S_STD:
4066                 {
4067                         v4l2_std_id *id = arg;
4068                         unsigned int i;
4069
4070                         for (i = 0; i < TVNORMS; i++)
4071                                 if (*id == tvnorms[i].id)
4072                                         break;
4073                         if (i == TVNORMS)
4074                                 for (i = 0; i < TVNORMS; i++)
4075                                         if (*id & tvnorms[i].id)
4076                                                 break;
4077                         if (i == TVNORMS)
4078                                 return -EINVAL;
4079
4080                         down(&usbvision->lock);
4081                         usbvision->tvnorm = &tvnorms[i];
4082
4083                         call_i2c_clients(usbvision, VIDIOC_S_STD,
4084                                          &usbvision->tvnorm->id);
4085
4086                         up(&usbvision->lock);
4087
4088                         PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
4089                         return 0;
4090                 }
4091                 case VIDIOC_G_TUNER:
4092                 {
4093                         struct v4l2_tuner *vt = arg;
4094
4095                         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
4096                                 return -EINVAL;
4097                         strcpy(vt->name, "Television");
4098                         /* Let clients fill in the remainder of this struct */
4099                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
4100
4101                         PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
4102                         return 0;
4103                 }
4104                 case VIDIOC_S_TUNER:
4105                 {
4106                         struct v4l2_tuner *vt = arg;
4107
4108                         // Only no or one tuner for now
4109                         if (!usbvision->have_tuner || vt->index)
4110                                 return -EINVAL;
4111                         /* let clients handle this */
4112                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
4113
4114                         PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
4115                         return 0;
4116                 }
4117                 case VIDIOC_G_FREQUENCY:
4118                 {
4119                         struct v4l2_frequency *freq = arg;
4120
4121                         freq->tuner = 0; // Only one tuner
4122                         freq->type = V4L2_TUNER_ANALOG_TV;
4123                         freq->frequency = usbvision->freq;
4124                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
4125                         return 0;
4126                 }
4127                 case VIDIOC_S_FREQUENCY:
4128                 {
4129                         struct v4l2_frequency *freq = arg;
4130
4131                         // Only no or one tuner for now
4132                         if (!usbvision->have_tuner || freq->tuner)
4133                                 return -EINVAL;
4134
4135                         usbvision->freq = freq->frequency;
4136                         call_i2c_clients(usbvision, cmd, freq);
4137                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
4138                         return 0;
4139                 }
4140                 case VIDIOC_G_AUDIO:
4141                 {
4142                         struct v4l2_audio *v = arg;
4143                         memset(v,0, sizeof(v));
4144                         strcpy(v->name, "TV");
4145                         PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
4146                         // FIXME: no more processings ???
4147                         return 0;
4148                 }
4149                 case VIDIOC_S_AUDIO:
4150                 {
4151                         struct v4l2_audio *v = arg;
4152                         if(v->index) {
4153                                 return -EINVAL;
4154                         }
4155                         PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
4156                         // FIXME: void function ???
4157                         return 0;
4158                 }
4159                 case VIDIOC_QUERYCTRL:
4160                 {
4161                         struct v4l2_queryctrl *ctrl = arg;
4162                         int id=ctrl->id;
4163
4164                         memset(ctrl,0,sizeof(*ctrl));
4165                         ctrl->id=id;
4166
4167                         call_i2c_clients(usbvision, cmd, arg);
4168
4169                         if (ctrl->type)
4170                                 return 0;
4171                         else
4172                                 return -EINVAL;
4173
4174                         PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
4175                 }
4176                 case VIDIOC_G_CTRL:
4177                 {
4178                         struct v4l2_control *ctrl = arg;
4179
4180                         PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
4181                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
4182                         return 0;
4183                 }
4184                 case VIDIOC_S_CTRL:
4185                 {
4186                         struct v4l2_control *ctrl = arg;
4187
4188                         PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
4189                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
4190                         return 0;
4191                 }
4192                 case VIDIOC_REQBUFS:
4193                 {
4194                         struct v4l2_requestbuffers *vr = arg;
4195                         int ret;
4196
4197                         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
4198
4199                         // Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
4200                         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
4201                            (vr->memory != V4L2_MEMORY_MMAP))
4202                                 return -EINVAL;
4203
4204                         // FIXME : before this, we must control if buffers are still mapped.
4205                         // Then interrupt streaming if so...
4206                         if(usbvision->streaming == Stream_On) {
4207                                 if ((ret = usbvision_stream_interrupt(usbvision)))
4208                                     return ret;
4209                         }
4210
4211                         usbvision_empty_framequeues(usbvision);
4212
4213                         usbvision->curFrame = NULL;
4214
4215                         PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
4216                         return 0;
4217                 }
4218                 case VIDIOC_QUERYBUF:
4219                 {
4220                         struct v4l2_buffer *vb = arg;
4221                         struct usbvision_frame *frame;
4222
4223                         // FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
4224
4225                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
4226                                 return -EINVAL;
4227                         }
4228                         if(vb->index>=USBVISION_NUMFRAMES)  {
4229                                 return -EINVAL;
4230                         }
4231                         // Updating the corresponding frame state
4232                         vb->flags = 0;
4233                         frame = &usbvision->frame[vb->index];
4234                         if(frame->grabstate >= FrameState_Ready)
4235                                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
4236                         if(frame->grabstate >= FrameState_Done)
4237                                 vb->flags |= V4L2_BUF_FLAG_DONE;
4238                         if(frame->grabstate == FrameState_Unused)
4239                                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
4240                         vb->memory = V4L2_MEMORY_MMAP;
4241
4242                         vb->m.offset = vb->index*MAX_FRAME_SIZE;
4243
4244                         vb->memory = V4L2_MEMORY_MMAP;
4245                         vb->field = V4L2_FIELD_NONE;
4246                         vb->length = MAX_FRAME_SIZE;
4247                         vb->timestamp = usbvision->frame[vb->index].timestamp;
4248                         vb->sequence = usbvision->frame[vb->index].sequence;
4249                         return 0;
4250                 }
4251                 case VIDIOC_QBUF:
4252                 {
4253                         struct v4l2_buffer *vb = arg;
4254                         struct usbvision_frame *frame;
4255                         unsigned long lock_flags;
4256
4257                         // FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
4258                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
4259                                 return -EINVAL;
4260                         }
4261                         if(vb->index>=USBVISION_NUMFRAMES)  {
4262                                 return -EINVAL;
4263                         }
4264
4265                         frame = &usbvision->frame[vb->index];
4266
4267                         if (frame->grabstate != FrameState_Unused) {
4268                                 return -EAGAIN;
4269                         }
4270
4271                         /* Mark it as ready and enqueue frame */
4272                         frame->grabstate = FrameState_Ready;
4273                         frame->scanstate = ScanState_Scanning;
4274                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
4275
4276                         vb->flags &= ~V4L2_BUF_FLAG_DONE;
4277
4278                         /* set v4l2_format index */
4279                         frame->v4l2_format = usbvision->palette;
4280
4281                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
4282                         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
4283                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
4284
4285                         PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
4286                         return 0;
4287                 }
4288                 case VIDIOC_DQBUF:
4289                 {
4290                         struct v4l2_buffer *vb = arg;
4291                         int ret;
4292                         struct usbvision_frame *f;
4293                         unsigned long lock_flags;
4294
4295                         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
4296                                 return -EINVAL;
4297
4298                         if (list_empty(&(usbvision->outqueue))) {
4299                                 if (usbvision->streaming == Stream_Idle)
4300                                         return -EINVAL;
4301                                 ret = wait_event_interruptible
4302                                         (usbvision->wait_frame,
4303                                          !list_empty(&(usbvision->outqueue)));
4304                                 if (ret)
4305                                         return ret;
4306                         }
4307
4308                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
4309                         f = list_entry(usbvision->outqueue.next,
4310                                        struct usbvision_frame, frame);
4311                         list_del(usbvision->outqueue.next);
4312                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
4313
4314                         f->grabstate = FrameState_Unused;
4315
4316                         vb->memory = V4L2_MEMORY_MMAP;
4317                         vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
4318                         vb->index = f->index;
4319                         vb->sequence = f->sequence;
4320                         vb->timestamp = f->timestamp;
4321                         vb->field = V4L2_FIELD_NONE;
4322                         vb->bytesused = f->scanlength;
4323
4324                         if(debug & DBG_IOCTL) { // do not spend computing time for debug stuff if not needed !
4325                                 if(usbvision_counter == 100) {
4326                                         PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF delta=%d",(unsigned)(jiffies-usbvision_timestamp));
4327                                         usbvision_counter = 0;
4328                                         usbvision_timestamp = jiffies;
4329                                 }
4330                                 else {
4331                                         usbvision_counter++;
4332                                 }
4333                                 PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF frame #%d",vb->index);
4334                         }
4335                         return 0;
4336                 }
4337                 case VIDIOC_STREAMON:
4338                 {
4339                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
4340
4341                         usbvision->streaming = Stream_On;
4342
4343                         if(debug & DBG_IOCTL) usbvision_timestamp = jiffies;
4344
4345                         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
4346
4347                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
4348
4349                         return 0;
4350                 }
4351                 case VIDIOC_STREAMOFF:
4352                 {
4353                         int *type = arg;
4354                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
4355
4356                         if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
4357                                 return -EINVAL;
4358
4359                         if(usbvision->streaming == Stream_On) {
4360                                 usbvision_stream_interrupt(usbvision);
4361                                 // Stop all video streamings
4362                                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
4363                         }
4364                         usbvision_empty_framequeues(usbvision);
4365
4366                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
4367                         return 0;
4368                 }
4369                 case VIDIOC_G_FBUF:
4370                 {
4371                         struct v4l2_framebuffer *vb = arg;
4372
4373                         if (dga) {
4374                                 *vb = usbvision->vid_buf;
4375                         }
4376                         else {
4377                                 memset(vb, 0, sizeof(vb)); //dga not supported, not used
4378                         }
4379                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FBUF base=%p, width=%d, height=%d, pixelformat=%d, bpl=%d",
4380                                vb->base, vb->fmt.width, vb->fmt.height, vb->fmt.pixelformat,vb->fmt.bytesperline);
4381                         return 0;
4382                 }
4383                 case VIDIOC_S_FBUF:
4384                 {
4385                         struct v4l2_framebuffer *vb = arg;
4386                         int formatIdx;
4387
4388                         if (dga == 0) {
4389                                 return -EINVAL;
4390                         }
4391
4392                         if(!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_ADMIN)) {
4393                                 return -EPERM;
4394                         }
4395
4396                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FBUF base=%p, width=%d, height=%d, pixelformat=%d, bpl=%d",
4397                                vb->base, vb->fmt.width, vb->fmt.height, vb->fmt.pixelformat,vb->fmt.bytesperline);
4398
4399                         for (formatIdx=0; formatIdx <= USBVISION_SUPPORTED_PALETTES; formatIdx++) {
4400                                 if (formatIdx == USBVISION_SUPPORTED_PALETTES) {
4401                                         return -EINVAL; // no matching video_format
4402                                 }
4403                                 if ((vb->fmt.pixelformat == usbvision_v4l2_format[formatIdx].format) &&
4404                                     (usbvision_v4l2_format[formatIdx].supported)) {
4405                                         break; //found matching video_format
4406                                 }
4407                         }
4408
4409                         if (vb->fmt.bytesperline<1) {
4410                                 return -EINVAL;
4411                         }
4412                         if (usbvision->overlay) {
4413                                 return -EBUSY;
4414                         }
4415                         down(&usbvision->lock);
4416                         if (usbvision->overlay_base) {
4417                                 iounmap(usbvision->overlay_base);
4418                                 usbvision->vid_buf_valid = 0;
4419                         }
4420                         usbvision->overlay_base = ioremap((ulong)vb->base, vb->fmt.height * vb->fmt.bytesperline);
4421                         if (usbvision->overlay_base) {
4422                                 usbvision->vid_buf_valid = 1;
4423                         }
4424                         usbvision->vid_buf = *vb;
4425                         usbvision->overlay_frame.v4l2_format = usbvision_v4l2_format[formatIdx];
4426                         up(&usbvision->lock);
4427                         return 0;
4428                 }
4429                 case VIDIOC_ENUM_FMT:
4430                 {
4431                         struct v4l2_fmtdesc *vfd = arg;
4432
4433                         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
4434                                 return -EINVAL;
4435                         }
4436                         vfd->flags = 0;
4437                         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
4438                         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
4439                         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
4440                         memset(vfd->reserved, 0, sizeof(vfd->reserved));
4441                         return 0;
4442                 }
4443                 case VIDIOC_G_FMT:
4444                 {
4445                         struct v4l2_format *vf = arg;
4446
4447                         switch (vf->type) {
4448                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4449                                 {
4450                                         vf->fmt.pix.width = usbvision->curwidth;
4451                                         vf->fmt.pix.height = usbvision->curheight;
4452                                         vf->fmt.pix.pixelformat = usbvision->palette.format;
4453                                         vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
4454                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
4455                                         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
4456                                         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
4457                                 }
4458                                 return 0;
4459                                 default:
4460                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
4461                                         return -EINVAL;
4462                         }
4463                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d",vf->fmt.win.w.width, vf->fmt.win.w.height);
4464                         return 0;
4465                 }
4466                 case VIDIOC_TRY_FMT:
4467                 case VIDIOC_S_FMT:
4468                 {
4469                         struct v4l2_format *vf = arg;
4470                         struct v4l2_clip *vc=NULL;
4471                         int on,formatIdx;
4472
4473                         switch(vf->type) {
4474                                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
4475                                 {
4476                                         if (vf->fmt.win.clipcount>256) {
4477                                                 return -EDOM;   /* Too many clips! */
4478                                         }
4479                                         // Do every clips.
4480                                         vc = vmalloc(sizeof(struct v4l2_clip)*(vf->fmt.win.clipcount+4));
4481                                         if (vc == NULL) {
4482                                                 return -ENOMEM;
4483                                         }
4484                                         if (vf->fmt.win.clipcount && copy_from_user(vc,vf->fmt.win.clips,sizeof(struct v4l2_clip)*vf->fmt.win.clipcount)) {
4485                                                 return -EFAULT;
4486                                         }
4487                                         on = usbvision->overlay;        // Save overlay state
4488                                         if (on) {
4489                                                 usbvision_cap(usbvision, 0);
4490                                         }
4491
4492                                         // strange, it seems xawtv sometimes calls us with 0
4493                                         // width and/or height. Ignore these values
4494                                         if (vf->fmt.win.w.left == 0) {
4495                                                 vf->fmt.win.w.left = usbvision->vid_win.fmt.win.w.left;
4496                                         }
4497                                         if (vf->fmt.win.w.top == 0) {
4498                                                 vf->fmt.win.w.top = usbvision->vid_win.fmt.win.w.top;
4499                                         }
4500
4501                                         // by now we are committed to the new data...
4502                                         down(&usbvision->lock);
4503                                         RESTRICT_TO_RANGE(vf->fmt.win.w.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
4504                                         RESTRICT_TO_RANGE(vf->fmt.win.w.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
4505                                         usbvision->vid_win = *vf;
4506                                         usbvision->overlay_frame.width = vf->fmt.win.w.width;
4507                                         usbvision->overlay_frame.height = vf->fmt.win.w.height;
4508                                         usbvision_set_output(usbvision, vf->fmt.win.w.width, vf->fmt.win.w.height);
4509                                         up(&usbvision->lock);
4510
4511                                         // Impose display clips
4512                                         if (vf->fmt.win.w.left+vf->fmt.win.w.width > (unsigned int)usbvision->vid_buf.fmt.width) {
4513                                                 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);
4514                                         }
4515                                         if (vf->fmt.win.w.top+vf->fmt.win.w.height > (unsigned int)usbvision->vid_buf.fmt.height) {
4516                                                 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);
4517                                         }
4518
4519                                         // built the requested clipping zones
4520                                         usbvision_built_overlay(usbvision, vf->fmt.win.clipcount, vc);
4521                                         vfree(vc);
4522
4523                                         // restore overlay state
4524                                         if (on) {
4525                                                 usbvision_cap(usbvision, 1);
4526                                         }
4527                                         usbvision->vid_win_valid = 1;
4528                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT overlay x=%d, y=%d, w=%d, h=%d, chroma=%x, clips=%d",
4529                                                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);
4530                                         return 0;
4531                                 }
4532                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
4533                                 {
4534                                         /* Find requested format in available ones */
4535                                         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
4536                                                 if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
4537                                                         usbvision->palette = usbvision_v4l2_format[formatIdx];
4538                                                         break;
4539                                                 }
4540                                         }
4541                                         /* robustness */
4542                                         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
4543                                                 return -EINVAL;
4544                                         }
4545                                         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
4546                                         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
4547                                         // by now we are committed to the new data...
4548                                         down(&usbvision->lock);
4549                                         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
4550                                         up(&usbvision->lock);
4551
4552                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
4553                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
4554                                         return 0;
4555                                 }
4556                                 default:
4557                                         return -EINVAL;
4558                         }
4559                 }
4560                 case VIDIOC_OVERLAY:
4561                 {
4562                         int *v = arg;
4563
4564                         if ( (dga == 0) &&
4565                              (usbvision->palette.format != V4L2_PIX_FMT_YVU420) &&
4566                              (usbvision->palette.format != V4L2_PIX_FMT_YUV422P) ) {
4567                                 PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY  DGA disabled");
4568                                 return -EINVAL;
4569                         }
4570
4571                         if (*v == 0) {
4572                                 usbvision_cap(usbvision, 0);
4573                         }
4574                         else {
4575                                 // are VIDIOCSFBUF and VIDIOCSWIN done?
4576                                 if ((usbvision->vid_buf_valid == 0) || (usbvision->vid_win_valid == 0)) {
4577                                         PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY  vid_buf_valid %d; vid_win_valid %d",
4578                                                usbvision->vid_buf_valid, usbvision->vid_win_valid);
4579                                         return -EINVAL;
4580                                 }
4581                                 usbvision_cap(usbvision, 1);
4582                         }
4583                         PDEBUG(DBG_IOCTL, "VIDIOC_OVERLAY %s", (*v)?"on":"off");
4584                         return 0;
4585                 }
4586                 default:
4587                         return -ENOIOCTLCMD;
4588         }
4589         return 0;
4590 }
4591
4592 static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
4593                        unsigned int cmd, unsigned long arg)
4594 {
4595         return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
4596 }
4597
4598
4599 static ssize_t usbvision_v4l2_read(struct file *file, char *buf,
4600                       size_t count, loff_t *ppos)
4601 {
4602         struct video_device *dev = video_devdata(file);
4603         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
4604         int noblock = file->f_flags & O_NONBLOCK;
4605         unsigned long lock_flags;
4606
4607         int frmx = -1;
4608         int ret,i;
4609         struct usbvision_frame *frame;
4610
4611         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
4612
4613         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
4614                 return -EFAULT;
4615
4616         /* no stream is running, make it running ! */
4617         usbvision->streaming = Stream_On;
4618         call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
4619
4620         /* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
4621         for(i=0;i<USBVISION_NUMFRAMES;i++) {
4622                 frame = &usbvision->frame[i];
4623                 if(frame->grabstate == FrameState_Unused) {
4624                         /* Mark it as ready and enqueue frame */
4625                         frame->grabstate = FrameState_Ready;
4626                         frame->scanstate = ScanState_Scanning;
4627                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
4628
4629                         /* set v4l2_format index */
4630                         frame->v4l2_format = usbvision->palette;
4631
4632                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
4633                         list_add_tail(&frame->frame, &usbvision->inqueue);
4634                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
4635                 }
4636         }
4637
4638         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
4639         if (list_empty(&(usbvision->outqueue))) {
4640                 if(noblock)
4641                         return -EAGAIN;
4642
4643                 ret = wait_event_interruptible
4644                         (usbvision->wait_frame,
4645                          !list_empty(&(usbvision->outqueue)));
4646                 if (ret)
4647                         return ret;
4648         }
4649
4650         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
4651         frame = list_entry(usbvision->outqueue.next,
4652                            struct usbvision_frame, frame);
4653         list_del(usbvision->outqueue.next);
4654         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
4655
4656         if(debug & DBG_IOCTL) { // do not spend computing time for debug stuff if not needed !
4657                 if(usbvision_counter == 100) {
4658                         PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF delta=%d",(unsigned)(jiffies-usbvision_timestamp));
4659                         usbvision_counter = 0;
4660                         usbvision_timestamp = jiffies;
4661                 }
4662                 else {
4663                         usbvision_counter++;
4664                 }
4665         }
4666
4667         /* An error returns an empty frame */
4668         if (frame->grabstate == FrameState_Error) {
4669                 frame->bytes_read = 0;
4670                 return 0;
4671         }
4672
4673         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
4674                        frame->index, frame->bytes_read, frame->scanlength);
4675
4676         /* copy bytes to user space; we allow for partials reads */
4677         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
4678                 count = frame->scanlength - frame->bytes_read;
4679
4680         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
4681                 return -EFAULT;
4682         }
4683
4684         frame->bytes_read += count;
4685         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
4686                        (unsigned long)count, frame->bytes_read);
4687
4688         // For now, forget the frame if it has not been read in one shot.
4689 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
4690                 frame->bytes_read = 0;
4691
4692                 /* Mark it as available to be used again. */
4693                 usbvision->frame[frmx].grabstate = FrameState_Unused;
4694 /*      } */
4695
4696         return count;
4697 }
4698
4699 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
4700 {
4701         unsigned long size = vma->vm_end - vma->vm_start,
4702                 start = vma->vm_start;
4703         void *pos;
4704         u32 i;
4705
4706         struct video_device *dev = video_devdata(file);
4707         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
4708
4709         if (!USBVISION_IS_OPERATIONAL(usbvision))
4710                 return -EFAULT;
4711
4712         if (!(vma->vm_flags & VM_WRITE) ||
4713             size != PAGE_ALIGN(usbvision->max_frame_size)) {
4714                 return -EINVAL;
4715         }
4716
4717         for (i = 0; i < USBVISION_NUMFRAMES; i++) {
4718                 if (((usbvision->max_frame_size*i) >> PAGE_SHIFT) == vma->vm_pgoff)
4719                         break;
4720         }
4721         if (i == USBVISION_NUMFRAMES) {
4722                 PDEBUG(DBG_FUNC, "mmap: user supplied mapping address is out of range");
4723                 return -EINVAL;
4724         }
4725
4726         /* VM_IO is eventually going to replace PageReserved altogether */
4727         vma->vm_flags |= VM_IO;
4728         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
4729
4730         pos = usbvision->frame[i].data;
4731         while (size > 0) {
4732
4733                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
4734                         PDEBUG(DBG_FUNC, "mmap: vm_insert_page failed");
4735                         return -EAGAIN;
4736                 }
4737                 start += PAGE_SIZE;
4738                 pos += PAGE_SIZE;
4739                 size -= PAGE_SIZE;
4740         }
4741
4742         return 0;
4743 }
4744
4745
4746 /*
4747  * Here comes the stuff for radio on usbvision based devices
4748  *
4749  */
4750 static int usbvision_radio_open(struct inode *inode, struct file *file)
4751 {
4752         struct video_device *dev = video_devdata(file);
4753         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
4754         struct v4l2_frequency freq;
4755         int errCode = 0;
4756
4757         PDEBUG(DBG_RIO, "%s:", __FUNCTION__);
4758
4759         down(&usbvision->lock);
4760
4761         if (usbvision->user) {
4762                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
4763                 errCode = -EBUSY;
4764         }
4765         else {
4766                 if(PowerOnAtOpen) {
4767                         if (timer_pending(&usbvision->powerOffTimer)) {
4768                                 del_timer(&usbvision->powerOffTimer);
4769                         }
4770                         if (usbvision->power == 0) {
4771                                 usbvision_power_on(usbvision);
4772                                 usbvision_init_i2c(usbvision);
4773                         }
4774                 }
4775
4776                 // If so far no errors then we shall start the radio
4777                 usbvision->radio = 1;
4778                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
4779                 freq.frequency = 1517; //SWR3 @ 94.8MHz
4780                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
4781                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
4782                 usbvision->user++;
4783         }
4784
4785         if (errCode) {
4786                 if (PowerOnAtOpen) {
4787                         usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
4788                         usbvision_power_off(usbvision);
4789                         usbvision->initialized = 0;
4790                 }
4791         }
4792         up(&usbvision->lock);
4793         return errCode;
4794 }
4795
4796
4797 static int usbvision_radio_close(struct inode *inode, struct file *file)
4798 {
4799         struct video_device *dev = video_devdata(file);
4800         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
4801         int errCode = 0;
4802
4803         PDEBUG(DBG_RIO, "");
4804
4805         down(&usbvision->lock);
4806
4807         usbvision_audio_off(usbvision);
4808         usbvision->radio=0;
4809         usbvision->user--;
4810
4811         if (PowerOnAtOpen) {
4812                 mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
4813                 usbvision->initialized = 0;
4814         }
4815
4816         up(&usbvision->lock);
4817
4818         if (usbvision->remove_pending) {
4819                 info("%s: Final disconnect", __FUNCTION__);
4820                 usbvision_release(usbvision);
4821         }
4822
4823
4824         PDEBUG(DBG_RIO, "success");
4825
4826         return errCode;
4827 }
4828
4829 static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
4830                                  unsigned int cmd, void *arg)
4831 {
4832         struct video_device *dev = video_devdata(file);
4833         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
4834
4835         if (!USBVISION_IS_OPERATIONAL(usbvision))
4836                 return -EIO;
4837
4838         switch (cmd) {
4839                 case VIDIOC_QUERYCAP:
4840                 {
4841                         struct v4l2_capability *vc=arg;
4842
4843                         memset(vc, 0, sizeof(*vc));
4844                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
4845                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
4846                                 sizeof(vc->card));
4847                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
4848                                 sizeof(vc->bus_info));
4849                         vc->version = USBVISION_DRIVER_VERSION;
4850                         vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
4851                         PDEBUG(DBG_RIO, "VIDIOC_QUERYCAP");
4852                         return 0;
4853                 }
4854                 case VIDIOC_QUERYCTRL:
4855                 {
4856                         struct v4l2_queryctrl *ctrl = arg;
4857                         int id=ctrl->id;
4858
4859                         memset(ctrl,0,sizeof(*ctrl));
4860                         ctrl->id=id;
4861
4862                         call_i2c_clients(usbvision, cmd, arg);
4863                         PDEBUG(DBG_RIO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
4864
4865                         if (ctrl->type)
4866                                 return 0;
4867                         else
4868                                 return -EINVAL;
4869
4870                 }
4871                 case VIDIOC_G_CTRL:
4872                 {
4873                         struct v4l2_control *ctrl = arg;
4874
4875                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
4876                         PDEBUG(DBG_RIO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
4877                         return 0;
4878                 }
4879                 case VIDIOC_S_CTRL:
4880                 {
4881                         struct v4l2_control *ctrl = arg;
4882
4883                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
4884                         PDEBUG(DBG_RIO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
4885                         return 0;
4886                 }
4887                 case VIDIOC_G_TUNER:
4888                 {
4889                         struct v4l2_tuner *t = arg;
4890
4891                         if (t->index > 0)
4892                                 return -EINVAL;
4893
4894                         memset(t,0,sizeof(*t));
4895                         strcpy(t->name, "Radio");
4896                         t->type = V4L2_TUNER_RADIO;
4897
4898                         /* Let clients fill in the remainder of this struct */
4899                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
4900                         PDEBUG(DBG_RIO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
4901                         return 0;
4902                 }
4903                 case VIDIOC_S_TUNER:
4904                 {
4905                         struct v4l2_tuner *vt = arg;
4906
4907                         // Only no or one tuner for now
4908                         if (!usbvision->have_tuner || vt->index)
4909                                 return -EINVAL;
4910                         /* let clients handle this */
4911                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
4912
4913                         PDEBUG(DBG_RIO, "VIDIOC_S_TUNER");
4914                         return 0;
4915                 }
4916                 case VIDIOC_G_AUDIO:
4917                 {
4918                         struct v4l2_audio *a = arg;
4919
4920                         memset(a,0,sizeof(*a));
4921                         strcpy(a->name,"Radio");
4922                         PDEBUG(DBG_RIO, "VIDIOC_G_AUDIO");
4923                         return 0;
4924                 }
4925                 case VIDIOC_S_AUDIO:
4926                 case VIDIOC_S_INPUT:
4927                 case VIDIOC_S_STD:
4928                 return 0;
4929
4930                 case VIDIOC_G_FREQUENCY:
4931                 {
4932                         struct v4l2_frequency *f = arg;
4933
4934                         memset(f,0,sizeof(*f));
4935
4936                         f->type = V4L2_TUNER_RADIO;
4937                         f->frequency = usbvision->freq;
4938                         call_i2c_clients(usbvision, cmd, f);
4939                         PDEBUG(DBG_RIO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
4940
4941                         return 0;
4942                 }
4943                 case VIDIOC_S_FREQUENCY:
4944                 {
4945                         struct v4l2_frequency *f = arg;
4946
4947                         if (f->tuner != 0)
4948                                 return -EINVAL;
4949                         usbvision->freq = f->frequency;
4950                         call_i2c_clients(usbvision, cmd, f);
4951                         PDEBUG(DBG_RIO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
4952
4953                         return 0;
4954                 }
4955                 default:
4956                 {
4957                         PDEBUG(DBG_RIO, "%s: Unknown command %x", __FUNCTION__, cmd);
4958                         return -ENOIOCTLCMD;
4959                 }
4960         }
4961         return 0;
4962 }
4963
4964
4965 static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
4966                        unsigned int cmd, unsigned long arg)
4967 {
4968         return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
4969 }
4970
4971
4972 /*
4973  * Here comes the stuff for vbi on usbvision based devices
4974  *
4975  */
4976 static int usbvision_vbi_open(struct inode *inode, struct file *file)
4977 {
4978         struct video_device *dev = video_devdata(file);
4979         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
4980         unsigned long freq;
4981         int errCode = 0;
4982
4983         PDEBUG(DBG_RIO, "%s:", __FUNCTION__);
4984
4985         down(&usbvision->lock);
4986
4987         if (usbvision->user) {
4988                 err("%s: Someone tried to open an already opened USBVision VBI!", __FUNCTION__);
4989                 errCode = -EBUSY;
4990         }
4991         else {
4992                 if(PowerOnAtOpen) {
4993                         if (timer_pending(&usbvision->powerOffTimer)) {
4994                                 del_timer(&usbvision->powerOffTimer);
4995                         }
4996                         if (usbvision->power == 0) {
4997                                 usbvision_power_on(usbvision);
4998                                 usbvision_init_i2c(usbvision);
4999                         }
5000                 }
5001
5002                 // If so far no errors then we shall start the vbi device
5003                 //usbvision->vbi = 1;
5004                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
5005                 freq = 1517; //SWR3 @ 94.8MHz
5006                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
5007                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
5008                 usbvision->user++;
5009         }
5010
5011         if (errCode) {
5012                 if (PowerOnAtOpen) {
5013                         usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
5014                         usbvision_power_off(usbvision);
5015                         usbvision->initialized = 0;
5016                 }
5017         }
5018         up(&usbvision->lock);
5019         return errCode;
5020 }
5021
5022 static int usbvision_vbi_close(struct inode *inode, struct file *file)
5023 {
5024         struct video_device *dev = video_devdata(file);
5025         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
5026         int errCode = 0;
5027
5028         PDEBUG(DBG_RIO, "");
5029
5030         down(&usbvision->lock);
5031
5032         usbvision_audio_off(usbvision);
5033         usbvision->vbi=0;
5034         usbvision->user--;
5035
5036         if (PowerOnAtOpen) {
5037                 mod_timer(&usbvision->powerOffTimer, jiffies + USBVISION_POWEROFF_TIME);
5038                 usbvision->initialized = 0;
5039         }
5040
5041         up(&usbvision->lock);
5042
5043         if (usbvision->remove_pending) {
5044                 info("%s: Final disconnect", __FUNCTION__);
5045                 usbvision_release(usbvision);
5046         }
5047
5048
5049         PDEBUG(DBG_RIO, "success");
5050
5051         return errCode;
5052 }
5053
5054 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
5055                                  unsigned int cmd, void *arg)
5056 {
5057         struct video_device *dev = video_devdata(file);
5058         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
5059
5060         if (!USBVISION_IS_OPERATIONAL(usbvision))
5061                 return -EIO;
5062
5063         switch (cmd) {
5064                 case VIDIOC_QUERYCAP:
5065                 {
5066                         struct v4l2_capability *vc=arg;
5067                         memset(vc, 0, sizeof(struct v4l2_capability));
5068                         strcpy(vc->driver,"usbvision vbi");
5069                         strcpy(vc->card,usbvision->vcap.card);
5070                         strcpy(vc->bus_info,"usb");
5071                         vc->version = USBVISION_DRIVER_VERSION;             /* version */
5072                         vc->capabilities = V4L2_CAP_VBI_CAPTURE;            /* capabilities */
5073                         PDEBUG(DBG_RIO, "%s: VIDIOC_QUERYCAP", __FUNCTION__);
5074                         return 0;
5075                 }
5076                 case VIDIOCGTUNER:
5077                 {
5078                         struct video_tuner *vt = arg;
5079
5080                         if((vt->tuner) || (usbvision->channel)) {       /* Only tuner 0 */
5081                                 return -EINVAL;
5082                         }
5083                         strcpy(vt->name, "vbi");
5084                         // japan:          76.0 MHz -  89.9 MHz
5085                         // western europe: 87.5 MHz - 108.0 MHz
5086                         // russia:         65.0 MHz - 108.0 MHz
5087                         vt->rangelow=(int)(65*16);
5088                         vt->rangehigh=(int)(108*16);
5089                         vt->flags= 0;
5090                         vt->mode = 0;
5091                         call_i2c_clients(usbvision,cmd,vt);
5092                         PDEBUG(DBG_RIO, "%s: VIDIOCGTUNER signal=%d", __FUNCTION__, vt->signal);
5093                         return 0;
5094                 }
5095                 case VIDIOCSTUNER:
5096                 {
5097                         struct video_tuner *vt = arg;
5098
5099                         // Only channel 0 has a tuner
5100                         if((vt->tuner) || (usbvision->channel)) {
5101                                 return -EINVAL;
5102                         }
5103                         PDEBUG(DBG_RIO, "%s: VIDIOCSTUNER", __FUNCTION__);
5104                         return 0;
5105                 }
5106                 case VIDIOCGAUDIO:
5107                 {
5108                         struct video_audio *va = arg;
5109                         memset(va,0, sizeof(struct video_audio));
5110                         call_i2c_clients(usbvision, cmd, va);
5111                         va->flags|=VIDEO_AUDIO_MUTABLE;
5112                         va->volume=1;
5113                         va->step=1;
5114                         strcpy(va->name, "vbi");
5115                         PDEBUG(DBG_RIO, "%s: VIDIOCGAUDIO", __FUNCTION__);
5116                         return 0;
5117                 }
5118                 case VIDIOCSAUDIO:
5119                 {
5120                         struct video_audio *va = arg;
5121                         if(va->audio) {
5122                                 return -EINVAL;
5123                         }
5124
5125                         if(va->flags & VIDEO_AUDIO_MUTE) {
5126                                 if (usbvision_audio_mute(usbvision)) {
5127                                         return -EFAULT;
5128                                 }
5129                         }
5130                         else {
5131                                 if (usbvision_audio_on(usbvision)) {
5132                                         return -EFAULT;
5133                                 }
5134                         }
5135                         PDEBUG(DBG_RIO, "%s: VIDIOCSAUDIO flags=0x%x)", __FUNCTION__, va->flags);
5136                         return 0;
5137                 }
5138                 case VIDIOCGFREQ:
5139                 {
5140                         unsigned long *freq = arg;
5141
5142                         *freq = usbvision->freq;
5143                         PDEBUG(DBG_RIO, "%s: VIDIOCGFREQ freq = %ld00 kHz", __FUNCTION__, (*freq * 10)>>4);
5144                         return 0;
5145                 }
5146                 case VIDIOCSFREQ:
5147                 {
5148                         unsigned long *freq = arg;
5149
5150                         usbvision->freq = *freq;
5151                         call_i2c_clients(usbvision, cmd, freq);
5152                         PDEBUG(DBG_RIO, "%s: VIDIOCSFREQ freq = %ld00 kHz", __FUNCTION__, (*freq * 10)>>4);
5153                         return 0;
5154                 }
5155                 default:
5156                 {
5157                         PDEBUG(DBG_RIO, "%s: Unknown command %d", __FUNCTION__, cmd);
5158                         return -ENOIOCTLCMD;
5159                 }
5160         }
5161         return 0;
5162 }
5163
5164 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
5165                        unsigned int cmd, unsigned long arg)
5166 {
5167         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
5168 }
5169
5170
5171
5172 static void usbvision_configure_video(struct usb_usbvision *usbvision)
5173 {
5174         int model,i;
5175
5176         if (usbvision == NULL)
5177                 return;
5178
5179         model = usbvision->DevModel;
5180         usbvision->depth = 24;
5181         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
5182
5183         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
5184                 usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
5185         } else {
5186                 usbvision->Vin_Reg2_Preset = 0;
5187         }
5188
5189         memset(&usbvision->vcap, 0, sizeof(usbvision->vcap));
5190         strcpy(usbvision->vcap.driver, "USBVision");
5191         strlcpy(usbvision->vcap.bus_info, usbvision->dev->dev.bus_id,
5192                 sizeof(usbvision->vcap.bus_info));
5193         usbvision->vcap.capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
5194                 (dga ? (V4L2_FBUF_CAP_LIST_CLIPPING | V4L2_CAP_VIDEO_OVERLAY) : 0) |
5195                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
5196         usbvision->vcap.version = USBVISION_DRIVER_VERSION;         /* version */
5197
5198         for (i = 0; i < TVNORMS; i++)
5199                 if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
5200                         break;
5201         if (i == TVNORMS)
5202                 i = 0;
5203         usbvision->tvnorm = &tvnorms[i];        /* set default norm */
5204
5205         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
5206         usbvision->ctl_input = 0;
5207
5208         /* This should be here to make i2c clients to be able to register */
5209         usbvision_audio_off(usbvision); //first switch off audio
5210         if (!PowerOnAtOpen) {
5211                 usbvision_power_on(usbvision);  //and then power up the noisy tuner
5212                 usbvision_init_i2c(usbvision);
5213         }
5214 }
5215
5216 //
5217 // Video registration stuff
5218 //
5219
5220 // Video template
5221 static struct file_operations usbvision_fops = {
5222   #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
5223         .owner             = THIS_MODULE,
5224   #endif
5225         .open           = usbvision_v4l2_open,
5226         .release        = usbvision_v4l2_close,
5227         .read           = usbvision_v4l2_read,
5228         .mmap           = usbvision_v4l2_mmap,
5229         .ioctl          = usbvision_v4l2_ioctl,
5230         .llseek         = no_llseek,
5231 };
5232 static struct video_device usbvision_video_template = {
5233   #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
5234         .owner             = THIS_MODULE,
5235   #endif
5236         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
5237         .hardware       = VID_HARDWARE_USBVISION,
5238         .fops           = &usbvision_fops,
5239   #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
5240         .name           = "usbvision-video",
5241         .release        = video_device_release,
5242   #endif
5243         .minor          = -1,
5244 };
5245
5246
5247 // Radio template
5248 static struct file_operations usbvision_radio_fops = {
5249   #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
5250         .owner             = THIS_MODULE,
5251   #endif
5252         .open           = usbvision_radio_open,
5253         .release        = usbvision_radio_close,
5254         .ioctl          = usbvision_radio_ioctl,
5255         .llseek         = no_llseek,
5256 };
5257
5258 static struct video_device usbvision_radio_template=
5259 {
5260   #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
5261         .owner             = THIS_MODULE,
5262   #endif
5263         .type           = VID_TYPE_TUNER,
5264         .hardware       = VID_HARDWARE_USBVISION,
5265         .fops           = &usbvision_radio_fops,
5266   #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
5267         .release        = video_device_release,
5268         .name           = "usbvision-radio",
5269   #endif
5270         .minor          = -1,
5271 };
5272
5273
5274 // vbi template
5275 static struct file_operations usbvision_vbi_fops = {
5276   #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
5277         .owner             = THIS_MODULE,
5278   #endif
5279         .open           = usbvision_vbi_open,
5280         .release        = usbvision_vbi_close,
5281         .ioctl          = usbvision_vbi_ioctl,
5282         .llseek         = no_llseek,
5283 };
5284
5285 static struct video_device usbvision_vbi_template=
5286 {
5287   #if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,31)
5288         .owner             = THIS_MODULE,
5289   #endif
5290         .type           = VID_TYPE_TUNER,
5291         .hardware       = VID_HARDWARE_USBVISION,
5292         .fops           = &usbvision_vbi_fops,
5293   #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
5294         .release        = video_device_release,
5295         .name           = "usbvision-vbi",
5296   #endif
5297         .minor          = -1,
5298 };
5299
5300
5301 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
5302                                         struct video_device *vdev_template,
5303                                         char *name)
5304 {
5305         struct usb_device *usb_dev = usbvision->dev;
5306         struct video_device *vdev;
5307
5308         if (usb_dev == NULL) {
5309                 err("%s: usbvision->dev is not set", __FUNCTION__);
5310                 return NULL;
5311         }
5312
5313         vdev = video_device_alloc();
5314         if (NULL == vdev) {
5315                 return NULL;
5316         }
5317         *vdev = *vdev_template;
5318 //      vdev->minor   = -1;
5319         vdev->dev     = &usb_dev->dev;
5320         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
5321         video_set_drvdata(vdev, usbvision);
5322         return vdev;
5323 }
5324
5325 // unregister video4linux devices
5326 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
5327 {
5328         // vbi Device:
5329         if (usbvision->vbi) {
5330                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
5331                 if (usbvision->vbi->minor != -1) {
5332                         video_unregister_device(usbvision->vbi);
5333                 }
5334                 else {
5335                         video_device_release(usbvision->vbi);
5336                 }
5337                 usbvision->vbi = NULL;
5338         }
5339
5340         // Radio Device:
5341         if (usbvision->rdev) {
5342                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
5343                 if (usbvision->rdev->minor != -1) {
5344                         video_unregister_device(usbvision->rdev);
5345                 }
5346                 else {
5347                         video_device_release(usbvision->rdev);
5348                 }
5349                 usbvision->rdev = NULL;
5350         }
5351
5352         // Video Device:
5353         if (usbvision->vdev) {
5354                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
5355                 if (usbvision->vdev->minor != -1) {
5356                         video_unregister_device(usbvision->vdev);
5357                 }
5358                 else {
5359                         video_device_release(usbvision->vdev);
5360                 }
5361                 usbvision->vdev = NULL;
5362         }
5363 }
5364
5365 // register video4linux devices
5366 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
5367 {
5368         // Video Device:
5369         usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
5370         if (usbvision->vdev == NULL) {
5371                 goto err_exit;
5372         }
5373         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
5374                 goto err_exit;
5375         }
5376         info("USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]", usbvision->nr,usbvision->vdev->minor & 0x1f);
5377
5378         // Radio Device:
5379         if (usbvision_device_data[usbvision->DevModel].Radio) {
5380                 // usbvision has radio
5381                 usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
5382                 if (usbvision->rdev == NULL) {
5383                         goto err_exit;
5384                 }
5385                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
5386                         goto err_exit;
5387                 }
5388                 info("USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]", usbvision->nr, usbvision->rdev->minor & 0x1f);
5389         }
5390         // vbi Device:
5391         if (usbvision_device_data[usbvision->DevModel].vbi) {
5392                 usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
5393                 if (usbvision->vdev == NULL) {
5394                         goto err_exit;
5395                 }
5396                 if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
5397                         goto err_exit;
5398                 }
5399                 info("USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)", usbvision->nr,usbvision->vbi->minor & 0x1f);
5400         }
5401         // all done
5402         return 0;
5403
5404  err_exit:
5405         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
5406         usbvision_unregister_video(usbvision);
5407         return -1;
5408 }
5409
5410 /*
5411  * usbvision_alloc()
5412  *
5413  * This code allocates the struct usb_usbvision. It is filled with default values.
5414  *
5415  * Returns NULL on error, a pointer to usb_usbvision else.
5416  *
5417  */
5418 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
5419 {
5420         struct usb_usbvision *usbvision;
5421
5422         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
5423                 goto err_exit;
5424         }
5425
5426         usbvision->dev = dev;
5427
5428         init_MUTEX(&usbvision->lock);   /* to 1 == available */
5429
5430         // prepare control urb for control messages during interrupts
5431         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
5432         if (usbvision->ctrlUrb == NULL) {
5433                 goto err_exit;
5434         }
5435         init_waitqueue_head(&usbvision->ctrlUrb_wq);
5436         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
5437
5438         init_timer(&usbvision->powerOffTimer);
5439         usbvision->powerOffTimer.data = (long) usbvision;
5440         usbvision->powerOffTimer.function = usbvision_powerOffTimer;
5441
5442         return usbvision;
5443
5444 err_exit:
5445         if (usbvision && usbvision->ctrlUrb) {
5446                 usb_free_urb(usbvision->ctrlUrb);
5447         }
5448         if (usbvision) {
5449                 kfree(usbvision);
5450         }
5451         return NULL;
5452 }
5453
5454 /*
5455  * usbvision_release()
5456  *
5457  * This code does final release of struct usb_usbvision. This happens
5458  * after the device is disconnected -and- all clients closed their files.
5459  *
5460  */
5461 static void usbvision_release(struct usb_usbvision *usbvision)
5462 {
5463         PDEBUG(DBG_PROBE, "");
5464
5465         down(&usbvision->lock);
5466
5467         if (timer_pending(&usbvision->powerOffTimer)) {
5468                 del_timer(&usbvision->powerOffTimer);
5469         }
5470
5471         usbvision->usbvision_used = 0;
5472         usbvision->initialized = 0;
5473
5474         up(&usbvision->lock);
5475
5476         usbvision_remove_sysfs(usbvision->vdev);
5477         usbvision_unregister_video(usbvision);
5478         if(dga) {
5479                 if (usbvision->overlay_base) {
5480                         iounmap(usbvision->overlay_base);
5481                 }
5482         }
5483
5484         if (usbvision->ctrlUrb) {
5485                 usb_free_urb(usbvision->ctrlUrb);
5486         }
5487
5488         kfree(usbvision);
5489
5490         PDEBUG(DBG_PROBE, "success");
5491 }
5492
5493
5494 /*
5495  * usbvision_probe()
5496  *
5497  * This procedure queries device descriptor and accepts the interface
5498  * if it looks like USBVISION video device
5499  *
5500  */
5501 static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
5502 {
5503         struct usb_device *dev = interface_to_usbdev(intf);
5504         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
5505         const struct usb_host_interface *interface;
5506         struct usb_usbvision *usbvision = NULL;
5507         const struct usb_endpoint_descriptor *endpoint;
5508         int model;
5509
5510         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
5511                                         dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
5512         /* Is it an USBVISION video dev? */
5513         model = 0;
5514         for(model = 0; usbvision_device_data[model].idVendor; model++) {
5515                 if (le16_to_cpu(dev->descriptor.idVendor) != usbvision_device_data[model].idVendor) {
5516                         continue;
5517                 }
5518                 if (le16_to_cpu(dev->descriptor.idProduct) != usbvision_device_data[model].idProduct) {
5519                         continue;
5520                 }
5521
5522                 info("%s: %s found", __FUNCTION__, usbvision_device_data[model].ModelString);
5523                 break;
5524         }
5525
5526         if (usbvision_device_data[model].idVendor == 0) {
5527                 return -ENODEV; //no matching device
5528         }
5529         if (usbvision_device_data[model].Interface >= 0) {
5530                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
5531         }
5532         else {
5533                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
5534         }
5535         endpoint = &interface->endpoint[1].desc;
5536         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
5537                 err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
5538                 err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
5539                 return -ENODEV;
5540         }
5541         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
5542                 err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
5543                 return -ENODEV;
5544         }
5545
5546         usb_get_dev(dev);
5547
5548         if ((usbvision = usbvision_alloc(dev)) == NULL) {
5549                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
5550                 return -ENOMEM;
5551         }
5552         if (dev->descriptor.bNumConfigurations > 1) {
5553                 usbvision->bridgeType = BRIDGE_NT1004;
5554         }
5555         else if (usbvision_device_data[model].ModelString == "Dazzle Fusion Model DVC-90 Rev 1 (SECAM)") {
5556                 usbvision->bridgeType = BRIDGE_NT1005;
5557         }
5558         else {
5559                 usbvision->bridgeType = BRIDGE_NT1003;
5560         }
5561         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
5562
5563         down(&usbvision->lock);
5564
5565         usbvision->nr = usbvision_nr++;
5566
5567         usbvision->have_tuner = usbvision_device_data[model].Tuner;
5568         if (usbvision->have_tuner) {
5569                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
5570         }
5571
5572         usbvision->tuner_addr = ADDR_UNSET;
5573
5574         usbvision->DevModel = model;
5575         usbvision->remove_pending = 0;
5576         usbvision->last_error = 0;
5577         usbvision->iface = ifnum;
5578         usbvision->ifaceAltInactive = 0;
5579         usbvision->ifaceAltActive = 1;
5580         usbvision->video_endp = endpoint->bEndpointAddress;
5581         usbvision->isocPacketSize = 0;
5582         usbvision->usb_bandwidth = 0;
5583         usbvision->user = 0;
5584         usbvision->streaming = Stream_Off;
5585         usbvision_register_video(usbvision);
5586         usbvision_configure_video(usbvision);
5587         up(&usbvision->lock);
5588
5589
5590         usb_set_intfdata (intf, usbvision);
5591         usbvision_create_sysfs(usbvision->vdev);
5592
5593         PDEBUG(DBG_PROBE, "success");
5594         return 0;
5595 }
5596
5597
5598 /*
5599  * usbvision_disconnect()
5600  *
5601  * This procedure stops all driver activity, deallocates interface-private
5602  * structure (pointed by 'ptr') and after that driver should be removable
5603  * with no ill consequences.
5604  *
5605  */
5606 static void __devexit usbvision_disconnect(struct usb_interface *intf)
5607 {
5608         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
5609
5610         PDEBUG(DBG_PROBE, "");
5611
5612         if (usbvision == NULL) {
5613                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
5614                 return;
5615         }
5616         usb_set_intfdata (intf, NULL);
5617
5618         down(&usbvision->lock);
5619
5620         // At this time we ask to cancel outstanding URBs
5621         usbvision_stop_isoc(usbvision);
5622
5623         if (usbvision->power) {
5624                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
5625                 usbvision_power_off(usbvision);
5626         }
5627         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
5628
5629         usb_put_dev(usbvision->dev);
5630         usbvision->dev = NULL;  // USB device is no more
5631
5632         up(&usbvision->lock);
5633
5634         if (usbvision->user) {
5635                 info("%s: In use, disconnect pending", __FUNCTION__);
5636                 wake_up_interruptible(&usbvision->wait_frame);
5637                 wake_up_interruptible(&usbvision->wait_stream);
5638         }
5639         else {
5640                 usbvision_release(usbvision);
5641         }
5642
5643         PDEBUG(DBG_PROBE, "success");
5644
5645 }
5646
5647 static struct usb_driver usbvision_driver = {
5648         .name           = "usbvision",
5649         .id_table       = usbvision_table,
5650         .probe          = usbvision_probe,
5651         .disconnect     = usbvision_disconnect
5652 };
5653
5654 /*
5655  * customdevice_process()
5656  *
5657  * This procedure preprocesses CustomDevice parameter if any
5658  *
5659  */
5660 void customdevice_process(void)
5661 {
5662         usbvision_device_data[0]=usbvision_device_data[1];
5663         usbvision_table[0]=usbvision_table[1];
5664
5665         if(CustomDevice)
5666         {
5667                 char *parse=CustomDevice;
5668
5669                 PDEBUG(DBG_PROBE, "CustomDevide=%s", CustomDevice);
5670
5671                 /*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
5672                 usbvision_device_data[0].idVendor;
5673                 usbvision_device_data[0].idProduct;
5674                 usbvision_device_data[0].Interface;
5675                 usbvision_device_data[0].Codec;
5676                 usbvision_device_data[0].VideoChannels;
5677                 usbvision_device_data[0].VideoNorm;
5678                 usbvision_device_data[0].AudioChannels;
5679                 usbvision_device_data[0].Radio;
5680                 usbvision_device_data[0].Tuner;
5681                 usbvision_device_data[0].TunerType;
5682                 usbvision_device_data[0].Vin_Reg1;
5683                 usbvision_device_data[0].Vin_Reg2;
5684                 usbvision_device_data[0].X_Offset;
5685                 usbvision_device_data[0].Y_Offset;
5686                 usbvision_device_data[0].Dvi_yuv;
5687                 usbvision_device_data[0].ModelString;
5688                 */
5689
5690                 rmspace(parse);
5691                 usbvision_device_data[0].ModelString="USBVISION Custom Device";
5692
5693                 parse+=2;
5694                 sscanf(parse,"%x",&usbvision_device_data[0].idVendor);
5695                 goto2next(parse);
5696                 PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_device_data[0].idVendor);
5697                 parse+=2;
5698                 sscanf(parse,"%x",&usbvision_device_data[0].idProduct);
5699                 goto2next(parse);
5700                 PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_device_data[0].idProduct);
5701                 sscanf(parse,"%d",&usbvision_device_data[0].Interface);
5702                 goto2next(parse);
5703                 PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
5704                 sscanf(parse,"%d",&usbvision_device_data[0].Codec);
5705                 goto2next(parse);
5706                 PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
5707                 sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
5708                 goto2next(parse);
5709                 PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
5710
5711                 switch(*parse)
5712                 {
5713                         case 'P':
5714                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL");
5715                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
5716                                 break;
5717
5718                         case 'S':
5719                                 PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
5720                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_SECAM;
5721                                 break;
5722
5723                         case 'N':
5724                                 PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
5725                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_NTSC;
5726                                 break;
5727
5728                         default:
5729                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
5730                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
5731                                 break;
5732                 }
5733                 goto2next(parse);
5734
5735                 sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
5736                 goto2next(parse);
5737                 PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
5738                 sscanf(parse,"%d",&usbvision_device_data[0].Radio);
5739                 goto2next(parse);
5740                 PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
5741                 sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
5742                 goto2next(parse);
5743                 PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
5744                 sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
5745                 goto2next(parse);
5746                 PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
5747                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
5748                 goto2next(parse);
5749                 PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
5750                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
5751                 goto2next(parse);
5752                 PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
5753                 sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
5754                 goto2next(parse);
5755                 PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
5756                 sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
5757                 goto2next(parse);
5758                 PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
5759                 sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
5760                 PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
5761
5762                 //add to usbvision_table also
5763                 usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
5764                 usbvision_table[0].idVendor=usbvision_device_data[0].idVendor;
5765                 usbvision_table[0].idProduct=usbvision_device_data[0].idProduct;
5766
5767         }
5768 }
5769
5770
5771
5772 /*
5773  * usbvision_init()
5774  *
5775  * This code is run to initialize the driver.
5776  *
5777  */
5778 static int __init usbvision_init(void)
5779 {
5780         int errCode;
5781
5782         PDEBUG(DBG_PROBE, "");
5783
5784         PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled");
5785         PDEBUG(DBG_IO,  "IO      debugging is enabled");
5786         PDEBUG(DBG_RIO,  "RIO     debugging is enabled");
5787         PDEBUG(DBG_HEADER, "HEADER  debugging is enabled");
5788         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled");
5789         PDEBUG(DBG_IRQ,  "IRQ     debugging is enabled");
5790         PDEBUG(DBG_ISOC, "ISOC    debugging is enabled");
5791         PDEBUG(DBG_PARSE, "PARSE   debugging is enabled");
5792         PDEBUG(DBG_SCRATCH, "SCRATCH debugging is enabled");
5793         PDEBUG(DBG_FUNC, "FUNC    debugging is enabled");
5794         PDEBUG(DBG_I2C,  "I2C     debugging is enabled");
5795
5796         /* disable planar mode support unless compression enabled */
5797         if (isocMode != ISOC_MODE_COMPRESS ) {
5798                 // FIXME : not the right way to set supported flag
5799                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
5800                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
5801         }
5802
5803         customdevice_process();
5804
5805         errCode = usb_register(&usbvision_driver);
5806
5807         if (errCode == 0) {
5808                 info(DRIVER_DESC " : " DRIVER_VERSION);
5809                 PDEBUG(DBG_PROBE, "success");
5810         }
5811         return errCode;
5812 }
5813
5814 static void __exit usbvision_exit(void)
5815 {
5816  PDEBUG(DBG_PROBE, "");
5817
5818  usb_deregister(&usbvision_driver);
5819  PDEBUG(DBG_PROBE, "success");
5820 }
5821
5822 module_init(usbvision_init);
5823 module_exit(usbvision_exit);
5824
5825 /*
5826  * Overrides for Emacs so that we follow Linus's tabbing style.
5827  * ---------------------------------------------------------------------------
5828  * Local variables:
5829  * c-basic-offset: 8
5830  * End:
5831  */