V4L/DVB: Remove obsolete w9968cf v4l1 driver
Amerigo Wang [Fri, 28 May 2010 09:41:07 +0000 (06:41 -0300)]
>From a97df96226e89d3539be93ddb5a8df3a2f7edcb6 Mon Sep 17 00:00:00 2001

obsolete v4l1 driver replaced by gspca_ov519

Signed-off-by: Amerigo Wang <amwang@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Documentation/feature-removal-schedule.txt
drivers/media/video/Kconfig
drivers/media/video/Makefile
drivers/media/video/w9968cf.c [deleted file]
drivers/media/video/w9968cf.h [deleted file]
drivers/media/video/w9968cf_decoder.h [deleted file]
drivers/media/video/w9968cf_vpp.h [deleted file]

index 79ef731..d4c9894 100644 (file)
@@ -459,14 +459,6 @@ Who:       Corentin Chary <corentin.chary@gmail.com>
 
 ----------------------------
 
-What:  w9968cf v4l1 driver
-When:  2.6.35
-Files: drivers/media/video/w9968cf*.[ch]
-Why:   obsolete v4l1 driver replaced by gspca_ov519
-Who:   Hans de Goede <hdegoede@redhat.com>
-
-----------------------------
-
 What:  ovcamchip sensor framework
 When:  2.6.35
 Files: drivers/media/video/ovcamchip/*
index 901ddd1..6088959 100644 (file)
@@ -1018,28 +1018,6 @@ config VIDEO_OVCAMCHIP
          To compile this driver as a module, choose M here: the
          module will be called ovcamchip.
 
-config USB_W9968CF
-       tristate "USB W996[87]CF JPEG Dual Mode Camera support (DEPRECATED)"
-       depends on VIDEO_V4L1 && I2C && VIDEO_OVCAMCHIP
-       default n
-       ---help---
-         This driver is DEPRECATED please use the gspca ov519 module
-         instead. Note that for the w9968cf support of the gspca module
-         you need atleast version 0.6.3 of libv4l.
-
-         Say Y here if you want support for cameras based on OV681 or
-         Winbond W9967CF/W9968CF JPEG USB Dual Mode Camera Chips.
-
-         This driver has an optional plugin, which is distributed as a
-         separate module only (released under GPL). It allows to use higher
-         resolutions and framerates, but cannot be included in the official
-         Linux kernel for performance purposes.
-
-         See <file:Documentation/video4linux/w9968cf.txt> for more info.
-
-         To compile this driver as a module, choose M here: the
-         module will be called w9968cf.
-
 config USB_SE401
        tristate "USB SE401 Camera support"
        depends on VIDEO_V4L1
index 82aef40..bb702c9 100644 (file)
@@ -129,7 +129,6 @@ obj-$(CONFIG_VIDEO_CAFE_CCIC) += cafe_ccic.o
 obj-$(CONFIG_USB_DABUSB)        += dabusb.o
 obj-$(CONFIG_USB_SE401)         += se401.o
 obj-$(CONFIG_USB_STV680)        += stv680.o
-obj-$(CONFIG_USB_W9968CF)       += w9968cf.o
 obj-$(CONFIG_USB_ZR364XX)       += zr364xx.o
 obj-$(CONFIG_USB_STKWEBCAM)     += stkwebcam.o
 
diff --git a/drivers/media/video/w9968cf.c b/drivers/media/video/w9968cf.c
deleted file mode 100644 (file)
index 591fc6d..0000000
+++ /dev/null
@@ -1,3619 +0,0 @@
-/***************************************************************************
- * Video4Linux driver for W996[87]CF JPEG USB Dual Mode Camera Chip.       *
- *                                                                         *
- * Copyright (C) 2002-2004 by Luca Risolia <luca.risolia@studio.unibo.it>  *
- *                                                                         *
- * - Memory management code from bttv driver by Ralph Metzler,             *
- *   Marcus Metzler and Gerd Knorr.                                        *
- * - I2C interface to kernel, high-level image sensor control routines and *
- *   some symbolic names from OV511 driver by Mark W. McClelland.          *
- * - Low-level I2C fast write function by Piotr Czerczak.                  *
- * - Low-level I2C read function by Frederic Jouault.                      *
- *                                                                         *
- * This program is free software; you can redistribute it and/or modify    *
- * it under the terms of the GNU General Public License as published by    *
- * the Free Software Foundation; either version 2 of the License, or       *
- * (at your option) any later version.                                     *
- *                                                                         *
- * This program is distributed in the hope that it will be useful,         *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
- * GNU General Public License for more details.                            *
- *                                                                         *
- * You should have received a copy of the GNU General Public License       *
- * along with this program; if not, write to the Free Software             *
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
- ***************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/kmod.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/ioctl.h>
-#include <linux/delay.h>
-#include <linux/stddef.h>
-#include <asm/page.h>
-#include <asm/uaccess.h>
-#include <linux/page-flags.h>
-#include <linux/videodev.h>
-#include <media/v4l2-ioctl.h>
-
-#include "w9968cf.h"
-#include "w9968cf_decoder.h"
-
-static struct w9968cf_vpp_t* w9968cf_vpp;
-static DECLARE_WAIT_QUEUE_HEAD(w9968cf_vppmod_wait);
-
-static LIST_HEAD(w9968cf_dev_list); /* head of V4L registered cameras list */
-static DEFINE_MUTEX(w9968cf_devlist_mutex); /* semaphore for list traversal */
-
-static DECLARE_RWSEM(w9968cf_disconnect); /* prevent races with open() */
-
-
-/****************************************************************************
- * Module macros and parameters                                             *
- ****************************************************************************/
-
-MODULE_DEVICE_TABLE(usb, winbond_id_table);
-
-MODULE_AUTHOR(W9968CF_MODULE_AUTHOR" "W9968CF_AUTHOR_EMAIL);
-MODULE_DESCRIPTION(W9968CF_MODULE_NAME);
-MODULE_VERSION(W9968CF_MODULE_VERSION);
-MODULE_LICENSE(W9968CF_MODULE_LICENSE);
-MODULE_SUPPORTED_DEVICE("Video");
-
-static unsigned short simcams = W9968CF_SIMCAMS;
-static short video_nr[]={[0 ... W9968CF_MAX_DEVICES-1] = -1}; /*-1=first free*/
-static unsigned int packet_size[] = {[0 ... W9968CF_MAX_DEVICES-1] =
-                                    W9968CF_PACKET_SIZE};
-static unsigned short max_buffers[] = {[0 ... W9968CF_MAX_DEVICES-1] =
-                                      W9968CF_BUFFERS};
-static int double_buffer[] = {[0 ... W9968CF_MAX_DEVICES-1] =
-                             W9968CF_DOUBLE_BUFFER};
-static int clamping[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_CLAMPING};
-static unsigned short filter_type[]= {[0 ... W9968CF_MAX_DEVICES-1] =
-                                     W9968CF_FILTER_TYPE};
-static int largeview[]= {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_LARGEVIEW};
-static unsigned short decompression[] = {[0 ... W9968CF_MAX_DEVICES-1] =
-                                        W9968CF_DECOMPRESSION};
-static int upscaling[]= {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_UPSCALING};
-static unsigned short force_palette[] = {[0 ... W9968CF_MAX_DEVICES-1] = 0};
-static int force_rgb[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_FORCE_RGB};
-static int autobright[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_AUTOBRIGHT};
-static int autoexp[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_AUTOEXP};
-static unsigned short lightfreq[] = {[0 ... W9968CF_MAX_DEVICES-1] =
-                                    W9968CF_LIGHTFREQ};
-static int bandingfilter[] = {[0 ... W9968CF_MAX_DEVICES-1]=
-                             W9968CF_BANDINGFILTER};
-static short clockdiv[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_CLOCKDIV};
-static int backlight[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_BACKLIGHT};
-static int mirror[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_MIRROR};
-static int monochrome[] = {[0 ... W9968CF_MAX_DEVICES-1]=W9968CF_MONOCHROME};
-static unsigned int brightness[] = {[0 ... W9968CF_MAX_DEVICES-1] =
-                                   W9968CF_BRIGHTNESS};
-static unsigned int hue[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_HUE};
-static unsigned int colour[]={[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_COLOUR};
-static unsigned int contrast[] = {[0 ... W9968CF_MAX_DEVICES-1] =
-                                 W9968CF_CONTRAST};
-static unsigned int whiteness[] = {[0 ... W9968CF_MAX_DEVICES-1] =
-                                  W9968CF_WHITENESS};
-#ifdef W9968CF_DEBUG
-static unsigned short debug = W9968CF_DEBUG_LEVEL;
-static int specific_debug = W9968CF_SPECIFIC_DEBUG;
-#endif
-
-static unsigned int param_nv[24]; /* number of values per parameter */
-
-module_param(simcams, ushort, 0644);
-module_param_array(video_nr, short, &param_nv[0], 0444);
-module_param_array(packet_size, uint, &param_nv[1], 0444);
-module_param_array(max_buffers, ushort, &param_nv[2], 0444);
-module_param_array(double_buffer, bool, &param_nv[3], 0444);
-module_param_array(clamping, bool, &param_nv[4], 0444);
-module_param_array(filter_type, ushort, &param_nv[5], 0444);
-module_param_array(largeview, bool, &param_nv[6], 0444);
-module_param_array(decompression, ushort, &param_nv[7], 0444);
-module_param_array(upscaling, bool, &param_nv[8], 0444);
-module_param_array(force_palette, ushort, &param_nv[9], 0444);
-module_param_array(force_rgb, ushort, &param_nv[10], 0444);
-module_param_array(autobright, bool, &param_nv[11], 0444);
-module_param_array(autoexp, bool, &param_nv[12], 0444);
-module_param_array(lightfreq, ushort, &param_nv[13], 0444);
-module_param_array(bandingfilter, bool, &param_nv[14], 0444);
-module_param_array(clockdiv, short, &param_nv[15], 0444);
-module_param_array(backlight, bool, &param_nv[16], 0444);
-module_param_array(mirror, bool, &param_nv[17], 0444);
-module_param_array(monochrome, bool, &param_nv[18], 0444);
-module_param_array(brightness, uint, &param_nv[19], 0444);
-module_param_array(hue, uint, &param_nv[20], 0444);
-module_param_array(colour, uint, &param_nv[21], 0444);
-module_param_array(contrast, uint, &param_nv[22], 0444);
-module_param_array(whiteness, uint, &param_nv[23], 0444);
-#ifdef W9968CF_DEBUG
-module_param(debug, ushort, 0644);
-module_param(specific_debug, bool, 0644);
-#endif
-
-MODULE_PARM_DESC(simcams,
-                "\n<n> Number of cameras allowed to stream simultaneously."
-                "\nn may vary from 0 to "
-                __MODULE_STRING(W9968CF_MAX_DEVICES)"."
-                "\nDefault value is "__MODULE_STRING(W9968CF_SIMCAMS)"."
-                "\n");
-MODULE_PARM_DESC(video_nr,
-                "\n<-1|n[,...]> Specify V4L minor mode number."
-                "\n -1 = use next available (default)"
-                "\n  n = use minor number n (integer >= 0)"
-                "\nYou can specify up to "__MODULE_STRING(W9968CF_MAX_DEVICES)
-                " cameras this way."
-                "\nFor example:"
-                "\nvideo_nr=-1,2,-1 would assign minor number 2 to"
-                "\nthe second camera and use auto for the first"
-                "\none and for every other camera."
-                "\n");
-MODULE_PARM_DESC(packet_size,
-                "\n<n[,...]> Specify the maximum data payload"
-                "\nsize in bytes for alternate settings, for each device."
-                "\nn is scaled between 63 and 1023 "
-                "(default is "__MODULE_STRING(W9968CF_PACKET_SIZE)")."
-                "\n");
-MODULE_PARM_DESC(max_buffers,
-                "\n<n[,...]> For advanced users."
-                "\nSpecify the maximum number of video frame buffers"
-                "\nto allocate for each device, from 2 to "
-                __MODULE_STRING(W9968CF_MAX_BUFFERS)
-                ". (default is "__MODULE_STRING(W9968CF_BUFFERS)")."
-                "\n");
-MODULE_PARM_DESC(double_buffer,
-                "\n<0|1[,...]> "
-                "Hardware double buffering: 0 disabled, 1 enabled."
-                "\nIt should be enabled if you want smooth video output: if"
-                "\nyou obtain out of sync. video, disable it, or try to"
-                "\ndecrease the 'clockdiv' module parameter value."
-                "\nDefault value is "__MODULE_STRING(W9968CF_DOUBLE_BUFFER)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(clamping,
-                "\n<0|1[,...]> Video data clamping: 0 disabled, 1 enabled."
-                "\nDefault value is "__MODULE_STRING(W9968CF_CLAMPING)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(filter_type,
-                "\n<0|1|2[,...]> Video filter type."
-                "\n0 none, 1 (1-2-1) 3-tap filter, "
-                "2 (2-3-6-3-2) 5-tap filter."
-                "\nDefault value is "__MODULE_STRING(W9968CF_FILTER_TYPE)
-                " for every device."
-                "\nThe filter is used to reduce noise and aliasing artifacts"
-                "\nproduced by the CCD or CMOS image sensor, and the scaling"
-                " process."
-                "\n");
-MODULE_PARM_DESC(largeview,
-                "\n<0|1[,...]> Large view: 0 disabled, 1 enabled."
-                "\nDefault value is "__MODULE_STRING(W9968CF_LARGEVIEW)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(upscaling,
-                "\n<0|1[,...]> Software scaling (for non-compressed video):"
-                "\n0 disabled, 1 enabled."
-                "\nDisable it if you have a slow CPU or you don't have"
-                " enough memory."
-                "\nDefault value is "__MODULE_STRING(W9968CF_UPSCALING)
-                " for every device."
-                "\nIf 'w9968cf-vpp' is not present, this parameter is"
-                " set to 0."
-                "\n");
-MODULE_PARM_DESC(decompression,
-                "\n<0|1|2[,...]> Software video decompression:"
-                "\n- 0 disables decompression (doesn't allow formats needing"
-                " decompression)"
-                "\n- 1 forces decompression (allows formats needing"
-                " decompression only);"
-                "\n- 2 allows any permitted formats."
-                "\nFormats supporting compressed video are YUV422P and"
-                " YUV420P/YUV420 "
-                "\nin any resolutions where both width and height are "
-                "a multiple of 16."
-                "\nDefault value is "__MODULE_STRING(W9968CF_DECOMPRESSION)
-                " for every device."
-                "\nIf 'w9968cf-vpp' is not present, forcing decompression is "
-                "\nnot allowed; in this case this parameter is set to 2."
-                "\n");
-MODULE_PARM_DESC(force_palette,
-                "\n<0"
-                "|" __MODULE_STRING(VIDEO_PALETTE_UYVY)
-                "|" __MODULE_STRING(VIDEO_PALETTE_YUV420)
-                "|" __MODULE_STRING(VIDEO_PALETTE_YUV422P)
-                "|" __MODULE_STRING(VIDEO_PALETTE_YUV420P)
-                "|" __MODULE_STRING(VIDEO_PALETTE_YUYV)
-                "|" __MODULE_STRING(VIDEO_PALETTE_YUV422)
-                "|" __MODULE_STRING(VIDEO_PALETTE_GREY)
-                "|" __MODULE_STRING(VIDEO_PALETTE_RGB555)
-                "|" __MODULE_STRING(VIDEO_PALETTE_RGB565)
-                "|" __MODULE_STRING(VIDEO_PALETTE_RGB24)
-                "|" __MODULE_STRING(VIDEO_PALETTE_RGB32)
-                "[,...]>"
-                " Force picture palette."
-                "\nIn order:"
-                "\n- 0 allows any of the following formats:"
-                "\n- UYVY    16 bpp - Original video, compression disabled"
-                "\n- YUV420  12 bpp - Original video, compression enabled"
-                "\n- YUV422P 16 bpp - Original video, compression enabled"
-                "\n- YUV420P 12 bpp - Original video, compression enabled"
-                "\n- YUVY    16 bpp - Software conversion from UYVY"
-                "\n- YUV422  16 bpp - Software conversion from UYVY"
-                "\n- GREY     8 bpp - Software conversion from UYVY"
-                "\n- RGB555  16 bpp - Software conversion from UYVY"
-                "\n- RGB565  16 bpp - Software conversion from UYVY"
-                "\n- RGB24   24 bpp - Software conversion from UYVY"
-                "\n- RGB32   32 bpp - Software conversion from UYVY"
-                "\nWhen not 0, this parameter will override 'decompression'."
-                "\nDefault value is 0 for every device."
-                "\nInitial palette is "
-                __MODULE_STRING(W9968CF_PALETTE_DECOMP_ON)"."
-                "\nIf 'w9968cf-vpp' is not present, this parameter is"
-                " set to 9 (UYVY)."
-                "\n");
-MODULE_PARM_DESC(force_rgb,
-                "\n<0|1[,...]> Read RGB video data instead of BGR:"
-                "\n 1 = use RGB component ordering."
-                "\n 0 = use BGR component ordering."
-                "\nThis parameter has effect when using RGBX palettes only."
-                "\nDefault value is "__MODULE_STRING(W9968CF_FORCE_RGB)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(autobright,
-                "\n<0|1[,...]> Image sensor automatically changes brightness:"
-                "\n 0 = no, 1 = yes"
-                "\nDefault value is "__MODULE_STRING(W9968CF_AUTOBRIGHT)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(autoexp,
-                "\n<0|1[,...]> Image sensor automatically changes exposure:"
-                "\n 0 = no, 1 = yes"
-                "\nDefault value is "__MODULE_STRING(W9968CF_AUTOEXP)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(lightfreq,
-                "\n<50|60[,...]> Light frequency in Hz:"
-                "\n 50 for European and Asian lighting,"
-                " 60 for American lighting."
-                "\nDefault value is "__MODULE_STRING(W9968CF_LIGHTFREQ)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(bandingfilter,
-                "\n<0|1[,...]> Banding filter to reduce effects of"
-                " fluorescent lighting:"
-                "\n 0 disabled, 1 enabled."
-                "\nThis filter tries to reduce the pattern of horizontal"
-                "\nlight/dark bands caused by some (usually fluorescent)"
-                " lighting."
-                "\nDefault value is "__MODULE_STRING(W9968CF_BANDINGFILTER)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(clockdiv,
-                "\n<-1|n[,...]> "
-                "Force pixel clock divisor to a specific value (for experts):"
-                "\n  n may vary from 0 to 127."
-                "\n -1 for automatic value."
-                "\nSee also the 'double_buffer' module parameter."
-                "\nDefault value is "__MODULE_STRING(W9968CF_CLOCKDIV)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(backlight,
-                "\n<0|1[,...]> Objects are lit from behind:"
-                "\n 0 = no, 1 = yes"
-                "\nDefault value is "__MODULE_STRING(W9968CF_BACKLIGHT)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(mirror,
-                "\n<0|1[,...]> Reverse image horizontally:"
-                "\n 0 = no, 1 = yes"
-                "\nDefault value is "__MODULE_STRING(W9968CF_MIRROR)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(monochrome,
-                "\n<0|1[,...]> Use image sensor as monochrome sensor:"
-                "\n 0 = no, 1 = yes"
-                "\nNot all the sensors support monochrome color."
-                "\nDefault value is "__MODULE_STRING(W9968CF_MONOCHROME)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(brightness,
-                "\n<n[,...]> Set picture brightness (0-65535)."
-                "\nDefault value is "__MODULE_STRING(W9968CF_BRIGHTNESS)
-                " for every device."
-                "\nThis parameter has no effect if 'autobright' is enabled."
-                "\n");
-MODULE_PARM_DESC(hue,
-                "\n<n[,...]> Set picture hue (0-65535)."
-                "\nDefault value is "__MODULE_STRING(W9968CF_HUE)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(colour,
-                "\n<n[,...]> Set picture saturation (0-65535)."
-                "\nDefault value is "__MODULE_STRING(W9968CF_COLOUR)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(contrast,
-                "\n<n[,...]> Set picture contrast (0-65535)."
-                "\nDefault value is "__MODULE_STRING(W9968CF_CONTRAST)
-                " for every device."
-                "\n");
-MODULE_PARM_DESC(whiteness,
-                "\n<n[,...]> Set picture whiteness (0-65535)."
-                "\nDefault value is "__MODULE_STRING(W9968CF_WHITENESS)
-                " for every device."
-                "\n");
-#ifdef W9968CF_DEBUG
-MODULE_PARM_DESC(debug,
-                "\n<n> Debugging information level, from 0 to 6:"
-                "\n0 = none (use carefully)"
-                "\n1 = critical errors"
-                "\n2 = significant informations"
-                "\n3 = configuration or general messages"
-                "\n4 = warnings"
-                "\n5 = called functions"
-                "\n6 = function internals"
-                "\nLevel 5 and 6 are useful for testing only, when only "
-                "one device is used."
-                "\nDefault value is "__MODULE_STRING(W9968CF_DEBUG_LEVEL)"."
-                "\n");
-MODULE_PARM_DESC(specific_debug,
-                "\n<0|1> Enable or disable specific debugging messages:"
-                "\n0 = print messages concerning every level"
-                " <= 'debug' level."
-                "\n1 = print messages concerning the level"
-                " indicated by 'debug'."
-                "\nDefault value is "
-                __MODULE_STRING(W9968CF_SPECIFIC_DEBUG)"."
-                "\n");
-#endif /* W9968CF_DEBUG */
-
-
-
-/****************************************************************************
- * Some prototypes                                                          *
- ****************************************************************************/
-
-/* Video4linux interface */
-static const struct v4l2_file_operations w9968cf_fops;
-static int w9968cf_open(struct file *);
-static int w9968cf_release(struct file *);
-static int w9968cf_mmap(struct file *, struct vm_area_struct *);
-static long w9968cf_ioctl(struct file *, unsigned, unsigned long);
-static ssize_t w9968cf_read(struct file *, char __user *, size_t, loff_t *);
-static long w9968cf_v4l_ioctl(struct file *, unsigned int,
-                            void __user *);
-
-/* USB-specific */
-static int w9968cf_start_transfer(struct w9968cf_device*);
-static int w9968cf_stop_transfer(struct w9968cf_device*);
-static int w9968cf_write_reg(struct w9968cf_device*, u16 value, u16 index);
-static int w9968cf_read_reg(struct w9968cf_device*, u16 index);
-static int w9968cf_write_fsb(struct w9968cf_device*, u16* data);
-static int w9968cf_write_sb(struct w9968cf_device*, u16 value);
-static int w9968cf_read_sb(struct w9968cf_device*);
-static int w9968cf_upload_quantizationtables(struct w9968cf_device*);
-static void w9968cf_urb_complete(struct urb *urb);
-
-/* Low-level I2C (SMBus) I/O */
-static int w9968cf_smbus_start(struct w9968cf_device*);
-static int w9968cf_smbus_stop(struct w9968cf_device*);
-static int w9968cf_smbus_write_byte(struct w9968cf_device*, u8 v);
-static int w9968cf_smbus_read_byte(struct w9968cf_device*, u8* v);
-static int w9968cf_smbus_write_ack(struct w9968cf_device*);
-static int w9968cf_smbus_read_ack(struct w9968cf_device*);
-static int w9968cf_smbus_refresh_bus(struct w9968cf_device*);
-static int w9968cf_i2c_adap_read_byte(struct w9968cf_device* cam,
-                                     u16 address, u8* value);
-static int w9968cf_i2c_adap_read_byte_data(struct w9968cf_device*, u16 address,
-                                          u8 subaddress, u8* value);
-static int w9968cf_i2c_adap_write_byte(struct w9968cf_device*,
-                                      u16 address, u8 subaddress);
-static int w9968cf_i2c_adap_fastwrite_byte_data(struct w9968cf_device*,
-                                               u16 address, u8 subaddress,
-                                               u8 value);
-
-/* I2C interface to kernel */
-static int w9968cf_i2c_init(struct w9968cf_device*);
-static int w9968cf_i2c_smbus_xfer(struct i2c_adapter*, u16 addr,
-                                 unsigned short flags, char read_write,
-                                 u8 command, int size, union i2c_smbus_data*);
-static u32 w9968cf_i2c_func(struct i2c_adapter*);
-
-/* Memory management */
-static void* rvmalloc(unsigned long size);
-static void rvfree(void *mem, unsigned long size);
-static void w9968cf_deallocate_memory(struct w9968cf_device*);
-static int  w9968cf_allocate_memory(struct w9968cf_device*);
-
-/* High-level image sensor control functions */
-static int w9968cf_sensor_set_control(struct w9968cf_device*,int cid,int val);
-static int w9968cf_sensor_get_control(struct w9968cf_device*,int cid,int *val);
-static int w9968cf_sensor_cmd(struct w9968cf_device*,
-                             unsigned int cmd, void *arg);
-static int w9968cf_sensor_init(struct w9968cf_device*);
-static int w9968cf_sensor_update_settings(struct w9968cf_device*);
-static int w9968cf_sensor_get_picture(struct w9968cf_device*);
-static int w9968cf_sensor_update_picture(struct w9968cf_device*,
-                                        struct video_picture pict);
-
-/* Other helper functions */
-static void w9968cf_configure_camera(struct w9968cf_device*,struct usb_device*,
-                                    enum w9968cf_model_id,
-                                    const unsigned short dev_nr);
-static void w9968cf_adjust_configuration(struct w9968cf_device*);
-static int w9968cf_turn_on_led(struct w9968cf_device*);
-static int w9968cf_init_chip(struct w9968cf_device*);
-static inline u16 w9968cf_valid_palette(u16 palette);
-static inline u16 w9968cf_valid_depth(u16 palette);
-static inline u8 w9968cf_need_decompression(u16 palette);
-static int w9968cf_set_picture(struct w9968cf_device*, struct video_picture);
-static int w9968cf_set_window(struct w9968cf_device*, struct video_window);
-static int w9968cf_postprocess_frame(struct w9968cf_device*,
-                                    struct w9968cf_frame_t*);
-static int w9968cf_adjust_window_size(struct w9968cf_device*, u32 *w, u32 *h);
-static void w9968cf_init_framelist(struct w9968cf_device*);
-static void w9968cf_push_frame(struct w9968cf_device*, u8 f_num);
-static void w9968cf_pop_frame(struct w9968cf_device*,struct w9968cf_frame_t**);
-static void w9968cf_release_resources(struct w9968cf_device*);
-
-
-
-/****************************************************************************
- * Symbolic names                                                           *
- ****************************************************************************/
-
-/* Used to represent a list of values and their respective symbolic names */
-struct w9968cf_symbolic_list {
-       const int num;
-       const char *name;
-};
-
-/*--------------------------------------------------------------------------
-  Returns the name of the matching element in the symbolic_list array. The
-  end of the list must be marked with an element that has a NULL name.
-  --------------------------------------------------------------------------*/
-static inline const char *
-symbolic(struct w9968cf_symbolic_list list[], const int num)
-{
-       int i;
-
-       for (i = 0; list[i].name != NULL; i++)
-               if (list[i].num == num)
-                       return (list[i].name);
-
-       return "Unknown";
-}
-
-static struct w9968cf_symbolic_list camlist[] = {
-       { W9968CF_MOD_GENERIC, "W996[87]CF JPEG USB Dual Mode Camera" },
-       { W9968CF_MOD_CLVBWGP, "Creative Labs Video Blaster WebCam Go Plus" },
-
-       /* Other cameras (having the same descriptors as Generic W996[87]CF) */
-       { W9968CF_MOD_ADPVDMA, "Aroma Digi Pen VGA Dual Mode ADG-5000" },
-       { W9986CF_MOD_AAU, "AVerMedia AVerTV USB" },
-       { W9968CF_MOD_CLVBWG, "Creative Labs Video Blaster WebCam Go" },
-       { W9968CF_MOD_LL, "Lebon LDC-035A" },
-       { W9968CF_MOD_EEEMC, "Ezonics EZ-802 EZMega Cam" },
-       { W9968CF_MOD_OOE, "OmniVision OV8610-EDE" },
-       { W9968CF_MOD_ODPVDMPC, "OPCOM Digi Pen VGA Dual Mode Pen Camera" },
-       { W9968CF_MOD_PDPII, "Pretec Digi Pen-II" },
-       { W9968CF_MOD_PDP480, "Pretec DigiPen-480" },
-
-       {  -1, NULL }
-};
-
-static struct w9968cf_symbolic_list senlist[] = {
-       { CC_OV76BE,   "OV76BE" },
-       { CC_OV7610,   "OV7610" },
-       { CC_OV7620,   "OV7620" },
-       { CC_OV7620AE, "OV7620AE" },
-       { CC_OV6620,   "OV6620" },
-       { CC_OV6630,   "OV6630" },
-       { CC_OV6630AE, "OV6630AE" },
-       { CC_OV6630AF, "OV6630AF" },
-       { -1, NULL }
-};
-
-/* Video4Linux1 palettes */
-static struct w9968cf_symbolic_list v4l1_plist[] = {
-       { VIDEO_PALETTE_GREY,    "GREY" },
-       { VIDEO_PALETTE_HI240,   "HI240" },
-       { VIDEO_PALETTE_RGB565,  "RGB565" },
-       { VIDEO_PALETTE_RGB24,   "RGB24" },
-       { VIDEO_PALETTE_RGB32,   "RGB32" },
-       { VIDEO_PALETTE_RGB555,  "RGB555" },
-       { VIDEO_PALETTE_YUV422,  "YUV422" },
-       { VIDEO_PALETTE_YUYV,    "YUYV" },
-       { VIDEO_PALETTE_UYVY,    "UYVY" },
-       { VIDEO_PALETTE_YUV420,  "YUV420" },
-       { VIDEO_PALETTE_YUV411,  "YUV411" },
-       { VIDEO_PALETTE_RAW,     "RAW" },
-       { VIDEO_PALETTE_YUV422P, "YUV422P" },
-       { VIDEO_PALETTE_YUV411P, "YUV411P" },
-       { VIDEO_PALETTE_YUV420P, "YUV420P" },
-       { VIDEO_PALETTE_YUV410P, "YUV410P" },
-       { -1, NULL }
-};
-
-/* Decoder error codes: */
-static struct w9968cf_symbolic_list decoder_errlist[] = {
-       { W9968CF_DEC_ERR_CORRUPTED_DATA, "Corrupted data" },
-       { W9968CF_DEC_ERR_BUF_OVERFLOW,   "Buffer overflow" },
-       { W9968CF_DEC_ERR_NO_SOI,         "SOI marker not found" },
-       { W9968CF_DEC_ERR_NO_SOF0,        "SOF0 marker not found" },
-       { W9968CF_DEC_ERR_NO_SOS,         "SOS marker not found" },
-       { W9968CF_DEC_ERR_NO_EOI,         "EOI marker not found" },
-       { -1, NULL }
-};
-
-/* URB error codes: */
-static struct w9968cf_symbolic_list urb_errlist[] = {
-       { -ENOMEM,    "No memory for allocation of internal structures" },
-       { -ENOSPC,    "The host controller's bandwidth is already consumed" },
-       { -ENOENT,    "URB was canceled by unlink_urb" },
-       { -EXDEV,     "ISO transfer only partially completed" },
-       { -EAGAIN,    "Too match scheduled for the future" },
-       { -ENXIO,     "URB already queued" },
-       { -EFBIG,     "Too much ISO frames requested" },
-       { -ENOSR,     "Buffer error (overrun)" },
-       { -EPIPE,     "Specified endpoint is stalled (device not responding)"},
-       { -EOVERFLOW, "Babble (too much data)" },
-       { -EPROTO,    "Bit-stuff error (bad cable?)" },
-       { -EILSEQ,    "CRC/Timeout" },
-       { -ETIME,     "Device does not respond to token" },
-       { -ETIMEDOUT, "Device does not respond to command" },
-       { -1, NULL }
-};
-
-/****************************************************************************
- * Memory management functions                                              *
- ****************************************************************************/
-static void* rvmalloc(unsigned long size)
-{
-       void* mem;
-       unsigned long adr;
-
-       size = PAGE_ALIGN(size);
-       mem = vmalloc_32(size);
-       if (!mem)
-               return NULL;
-
-       memset(mem, 0, size); /* Clear the ram out, no junk to the user */
-       adr = (unsigned long) mem;
-       while (size > 0) {
-               SetPageReserved(vmalloc_to_page((void *)adr));
-               adr += PAGE_SIZE;
-               size -= PAGE_SIZE;
-       }
-
-       return mem;
-}
-
-
-static void rvfree(void* mem, unsigned long size)
-{
-       unsigned long adr;
-
-       if (!mem)
-               return;
-
-       adr = (unsigned long) mem;
-       while ((long) size > 0) {
-               ClearPageReserved(vmalloc_to_page((void *)adr));
-               adr += PAGE_SIZE;
-               size -= PAGE_SIZE;
-       }
-       vfree(mem);
-}
-
-
-/*--------------------------------------------------------------------------
-  Deallocate previously allocated memory.
-  --------------------------------------------------------------------------*/
-static void w9968cf_deallocate_memory(struct w9968cf_device* cam)
-{
-       u8 i;
-
-       /* Free the isochronous transfer buffers */
-       for (i = 0; i < W9968CF_URBS; i++) {
-               kfree(cam->transfer_buffer[i]);
-               cam->transfer_buffer[i] = NULL;
-       }
-
-       /* Free temporary frame buffer */
-       if (cam->frame_tmp.buffer) {
-               rvfree(cam->frame_tmp.buffer, cam->frame_tmp.size);
-               cam->frame_tmp.buffer = NULL;
-       }
-
-       /* Free helper buffer */
-       if (cam->frame_vpp.buffer) {
-               rvfree(cam->frame_vpp.buffer, cam->frame_vpp.size);
-               cam->frame_vpp.buffer = NULL;
-       }
-
-       /* Free video frame buffers */
-       if (cam->frame[0].buffer) {
-               rvfree(cam->frame[0].buffer, cam->nbuffers*cam->frame[0].size);
-               cam->frame[0].buffer = NULL;
-       }
-
-       cam->nbuffers = 0;
-
-       DBG(5, "Memory successfully deallocated")
-}
-
-
-/*--------------------------------------------------------------------------
-  Allocate memory buffers for USB transfers and video frames.
-  This function is called by open() only.
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_allocate_memory(struct w9968cf_device* cam)
-{
-       const u16 p_size = wMaxPacketSize[cam->altsetting-1];
-       void* buff = NULL;
-       unsigned long hw_bufsize, vpp_bufsize;
-       u8 i, bpp;
-
-       /* NOTE: Deallocation is done elsewhere in case of error */
-
-       /* Calculate the max amount of raw data per frame from the device */
-       hw_bufsize = cam->maxwidth*cam->maxheight*2;
-
-       /* Calculate the max buf. size needed for post-processing routines */
-       bpp = (w9968cf_vpp) ? 4 : 2;
-       if (cam->upscaling)
-               vpp_bufsize = max(W9968CF_MAX_WIDTH*W9968CF_MAX_HEIGHT*bpp,
-                                 cam->maxwidth*cam->maxheight*bpp);
-       else
-               vpp_bufsize = cam->maxwidth*cam->maxheight*bpp;
-
-       /* Allocate memory for the isochronous transfer buffers */
-       for (i = 0; i < W9968CF_URBS; i++) {
-               if (!(cam->transfer_buffer[i] =
-                     kzalloc(W9968CF_ISO_PACKETS*p_size, GFP_KERNEL))) {
-                       DBG(1, "Couldn't allocate memory for the isochronous "
-                              "transfer buffers (%u bytes)",
-                           p_size * W9968CF_ISO_PACKETS)
-                       return -ENOMEM;
-               }
-       }
-
-       /* Allocate memory for the temporary frame buffer */
-       if (!(cam->frame_tmp.buffer = rvmalloc(hw_bufsize))) {
-               DBG(1, "Couldn't allocate memory for the temporary "
-                      "video frame buffer (%lu bytes)", hw_bufsize)
-               return -ENOMEM;
-       }
-       cam->frame_tmp.size = hw_bufsize;
-       cam->frame_tmp.number = -1;
-
-       /* Allocate memory for the helper buffer */
-       if (w9968cf_vpp) {
-               if (!(cam->frame_vpp.buffer = rvmalloc(vpp_bufsize))) {
-                       DBG(1, "Couldn't allocate memory for the helper buffer"
-                              " (%lu bytes)", vpp_bufsize)
-                       return -ENOMEM;
-               }
-               cam->frame_vpp.size = vpp_bufsize;
-       } else
-               cam->frame_vpp.buffer = NULL;
-
-       /* Allocate memory for video frame buffers */
-       cam->nbuffers = cam->max_buffers;
-       while (cam->nbuffers >= 2) {
-               if ((buff = rvmalloc(cam->nbuffers * vpp_bufsize)))
-                       break;
-               else
-                       cam->nbuffers--;
-       }
-
-       if (!buff) {
-               DBG(1, "Couldn't allocate memory for the video frame buffers")
-               cam->nbuffers = 0;
-               return -ENOMEM;
-       }
-
-       if (cam->nbuffers != cam->max_buffers)
-               DBG(2, "Couldn't allocate memory for %u video frame buffers. "
-                      "Only memory for %u buffers has been allocated",
-                   cam->max_buffers, cam->nbuffers)
-
-       for (i = 0; i < cam->nbuffers; i++) {
-               cam->frame[i].buffer = buff + i*vpp_bufsize;
-               cam->frame[i].size = vpp_bufsize;
-               cam->frame[i].number = i;
-               /* Circular list */
-               if (i != cam->nbuffers-1)
-                       cam->frame[i].next = &cam->frame[i+1];
-               else
-                       cam->frame[i].next = &cam->frame[0];
-               cam->frame[i].status = F_UNUSED;
-       }
-
-       DBG(5, "Memory successfully allocated")
-       return 0;
-}
-
-
-
-/****************************************************************************
- * USB-specific functions                                                   *
- ****************************************************************************/
-
-/*--------------------------------------------------------------------------
-  This is an handler function which is called after the URBs are completed.
-  It collects multiple data packets coming from the camera by putting them
-  into frame buffers: one or more zero data length data packets are used to
-  mark the end of a video frame; the first non-zero data packet is the start
-  of the next video frame; if an error is encountered in a packet, the entire
-  video frame is discarded and grabbed again.
-  If there are no requested frames in the FIFO list, packets are collected into
-  a temporary buffer.
-  --------------------------------------------------------------------------*/
-static void w9968cf_urb_complete(struct urb *urb)
-{
-       struct w9968cf_device* cam = (struct w9968cf_device*)urb->context;
-       struct w9968cf_frame_t** f;
-       unsigned int len, status;
-       void* pos;
-       u8 i;
-       int err = 0;
-
-       if ((!cam->streaming) || cam->disconnected) {
-               DBG(4, "Got interrupt, but not streaming")
-               return;
-       }
-
-       /* "(*f)" will be used instead of "cam->frame_current" */
-       f = &cam->frame_current;
-
-       /* If a frame has been requested and we are grabbing into
-          the temporary frame, we'll switch to that requested frame */
-       if ((*f) == &cam->frame_tmp && *cam->requested_frame) {
-               if (cam->frame_tmp.status == F_GRABBING) {
-                       w9968cf_pop_frame(cam, &cam->frame_current);
-                       (*f)->status = F_GRABBING;
-                       (*f)->length = cam->frame_tmp.length;
-                       memcpy((*f)->buffer, cam->frame_tmp.buffer,
-                              (*f)->length);
-                       DBG(6, "Switched from temp. frame to frame #%d",
-                           (*f)->number)
-               }
-       }
-
-       for (i = 0; i < urb->number_of_packets; i++) {
-               len = urb->iso_frame_desc[i].actual_length;
-               status = urb->iso_frame_desc[i].status;
-               pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer;
-
-               if (status && len != 0) {
-                       DBG(4, "URB failed, error in data packet "
-                              "(error #%u, %s)",
-                           status, symbolic(urb_errlist, status))
-                       (*f)->status = F_ERROR;
-                       continue;
-               }
-
-               if (len) { /* start of frame */
-
-                       if ((*f)->status == F_UNUSED) {
-                               (*f)->status = F_GRABBING;
-                               (*f)->length = 0;
-                       }
-
-                       /* Buffer overflows shouldn't happen, however...*/
-                       if ((*f)->length + len > (*f)->size) {
-                               DBG(4, "Buffer overflow: bad data packets")
-                               (*f)->status = F_ERROR;
-                       }
-
-                       if ((*f)->status == F_GRABBING) {
-                               memcpy((*f)->buffer + (*f)->length, pos, len);
-                               (*f)->length += len;
-                       }
-
-               } else if ((*f)->status == F_GRABBING) { /* end of frame */
-
-                       DBG(6, "Frame #%d successfully grabbed", (*f)->number)
-
-                       if (cam->vpp_flag & VPP_DECOMPRESSION) {
-                               err = w9968cf_vpp->check_headers((*f)->buffer,
-                                                                (*f)->length);
-                               if (err) {
-                                       DBG(4, "Skip corrupted frame: %s",
-                                           symbolic(decoder_errlist, err))
-                                       (*f)->status = F_UNUSED;
-                                       continue; /* grab this frame again */
-                               }
-                       }
-
-                       (*f)->status = F_READY;
-                       (*f)->queued = 0;
-
-                       /* Take a pointer to the new frame from the FIFO list.
-                          If the list is empty,we'll use the temporary frame*/
-                       if (*cam->requested_frame)
-                               w9968cf_pop_frame(cam, &cam->frame_current);
-                       else {
-                               cam->frame_current = &cam->frame_tmp;
-                               (*f)->status = F_UNUSED;
-                       }
-
-               } else if ((*f)->status == F_ERROR)
-                       (*f)->status = F_UNUSED; /* grab it again */
-
-               PDBGG("Frame length %lu | pack.#%u | pack.len. %u | state %d",
-                     (unsigned long)(*f)->length, i, len, (*f)->status)
-
-       } /* end for */
-
-       /* Resubmit this URB */
-       urb->dev = cam->usbdev;
-       urb->status = 0;
-       spin_lock(&cam->urb_lock);
-       if (cam->streaming)
-               if ((err = usb_submit_urb(urb, GFP_ATOMIC))) {
-                       cam->misconfigured = 1;
-                       DBG(1, "Couldn't resubmit the URB: error %d, %s",
-                           err, symbolic(urb_errlist, err))
-               }
-       spin_unlock(&cam->urb_lock);
-
-       /* Wake up the user process */
-       wake_up_interruptible(&cam->wait_queue);
-}
-
-
-/*---------------------------------------------------------------------------
-  Setup the URB structures for the isochronous transfer.
-  Submit the URBs so that the data transfer begins.
-  Return 0 on success, a negative number otherwise.
-  ---------------------------------------------------------------------------*/
-static int w9968cf_start_transfer(struct w9968cf_device* cam)
-{
-       struct usb_device *udev = cam->usbdev;
-       struct urb* urb;
-       const u16 p_size = wMaxPacketSize[cam->altsetting-1];
-       u16 w, h, d;
-       int vidcapt;
-       u32 t_size;
-       int err = 0;
-       s8 i, j;
-
-       for (i = 0; i < W9968CF_URBS; i++) {
-               urb = usb_alloc_urb(W9968CF_ISO_PACKETS, GFP_KERNEL);
-               if (!urb) {
-                       for (j = 0; j < i; j++)
-                               usb_free_urb(cam->urb[j]);
-                       DBG(1, "Couldn't allocate the URB structures")
-                       return -ENOMEM;
-               }
-
-               cam->urb[i] = urb;
-               urb->dev = udev;
-               urb->context = (void*)cam;
-               urb->pipe = usb_rcvisocpipe(udev, 1);
-               urb->transfer_flags = URB_ISO_ASAP;
-               urb->number_of_packets = W9968CF_ISO_PACKETS;
-               urb->complete = w9968cf_urb_complete;
-               urb->transfer_buffer = cam->transfer_buffer[i];
-               urb->transfer_buffer_length = p_size*W9968CF_ISO_PACKETS;
-               urb->interval = 1;
-               for (j = 0; j < W9968CF_ISO_PACKETS; j++) {
-                       urb->iso_frame_desc[j].offset = p_size*j;
-                       urb->iso_frame_desc[j].length = p_size;
-               }
-       }
-
-       /* Transfer size per frame, in WORD ! */
-       d = cam->hw_depth;
-       w = cam->hw_width;
-       h = cam->hw_height;
-
-       t_size = (w*h*d)/16;
-
-       err = w9968cf_write_reg(cam, 0xbf17, 0x00); /* reset everything */
-       err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* normal operation */
-
-       /* Transfer size */
-       err += w9968cf_write_reg(cam, t_size & 0xffff, 0x3d); /* low bits */
-       err += w9968cf_write_reg(cam, t_size >> 16, 0x3e);    /* high bits */
-
-       if (cam->vpp_flag & VPP_DECOMPRESSION)
-               err += w9968cf_upload_quantizationtables(cam);
-
-       vidcapt = w9968cf_read_reg(cam, 0x16); /* read picture settings */
-       err += w9968cf_write_reg(cam, vidcapt|0x8000, 0x16); /* capt. enable */
-
-       err += usb_set_interface(udev, 0, cam->altsetting);
-       err += w9968cf_write_reg(cam, 0x8a05, 0x3c); /* USB FIFO enable */
-
-       if (err || (vidcapt < 0)) {
-               for (i = 0; i < W9968CF_URBS; i++)
-                       usb_free_urb(cam->urb[i]);
-               DBG(1, "Couldn't tell the camera to start the data transfer")
-               return err;
-       }
-
-       w9968cf_init_framelist(cam);
-
-       /* Begin to grab into the temporary buffer */
-       cam->frame_tmp.status = F_UNUSED;
-       cam->frame_tmp.queued = 0;
-       cam->frame_current = &cam->frame_tmp;
-
-       if (!(cam->vpp_flag & VPP_DECOMPRESSION))
-               DBG(5, "Isochronous transfer size: %lu bytes/frame",
-                   (unsigned long)t_size*2)
-
-       DBG(5, "Starting the isochronous transfer...")
-
-       cam->streaming = 1;
-
-       /* Submit the URBs */
-       for (i = 0; i < W9968CF_URBS; i++) {
-               err = usb_submit_urb(cam->urb[i], GFP_KERNEL);
-               if (err) {
-                       cam->streaming = 0;
-                       for (j = i-1; j >= 0; j--) {
-                               usb_kill_urb(cam->urb[j]);
-                               usb_free_urb(cam->urb[j]);
-                       }
-                       DBG(1, "Couldn't send a transfer request to the "
-                              "USB core (error #%d, %s)", err,
-                           symbolic(urb_errlist, err))
-                       return err;
-               }
-       }
-
-       return 0;
-}
-
-
-/*--------------------------------------------------------------------------
-  Stop the isochronous transfer and set alternate setting to 0 (0Mb/s).
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_stop_transfer(struct w9968cf_device* cam)
-{
-       struct usb_device *udev = cam->usbdev;
-       unsigned long lock_flags;
-       int err = 0;
-       s8 i;
-
-       if (!cam->streaming)
-               return 0;
-
-       /* This avoids race conditions with usb_submit_urb()
-          in the URB completition handler */
-       spin_lock_irqsave(&cam->urb_lock, lock_flags);
-       cam->streaming = 0;
-       spin_unlock_irqrestore(&cam->urb_lock, lock_flags);
-
-       for (i = W9968CF_URBS-1; i >= 0; i--)
-               if (cam->urb[i]) {
-                       usb_kill_urb(cam->urb[i]);
-                       usb_free_urb(cam->urb[i]);
-                       cam->urb[i] = NULL;
-               }
-
-       if (cam->disconnected)
-               goto exit;
-
-       err = w9968cf_write_reg(cam, 0x0a05, 0x3c); /* stop USB transfer */
-       err += usb_set_interface(udev, 0, 0); /* 0 Mb/s */
-       err += w9968cf_write_reg(cam, 0x0000, 0x39); /* disable JPEG encoder */
-       err += w9968cf_write_reg(cam, 0x0000, 0x16); /* stop video capture */
-
-       if (err) {
-               DBG(2, "Failed to tell the camera to stop the isochronous "
-                      "transfer. However this is not a critical error.")
-               return -EIO;
-       }
-
-exit:
-       DBG(5, "Isochronous transfer stopped")
-       return 0;
-}
-
-
-/*--------------------------------------------------------------------------
-  Write a W9968CF register.
-  Return 0 on success, -1 otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_write_reg(struct w9968cf_device* cam, u16 value, u16 index)
-{
-       struct usb_device* udev = cam->usbdev;
-       int res;
-
-       res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0,
-                             USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
-                             value, index, NULL, 0, W9968CF_USB_CTRL_TIMEOUT);
-
-       if (res < 0)
-               DBG(4, "Failed to write a register "
-                      "(value 0x%04X, index 0x%02X, error #%d, %s)",
-                   value, index, res, symbolic(urb_errlist, res))
-
-       return (res >= 0) ? 0 : -1;
-}
-
-
-/*--------------------------------------------------------------------------
-  Read a W9968CF register.
-  Return the register value on success, -1 otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_read_reg(struct w9968cf_device* cam, u16 index)
-{
-       struct usb_device* udev = cam->usbdev;
-       u16* buff = cam->control_buffer;
-       int res;
-
-       res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 1,
-                             USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-                             0, index, buff, 2, W9968CF_USB_CTRL_TIMEOUT);
-
-       if (res < 0)
-               DBG(4, "Failed to read a register "
-                      "(index 0x%02X, error #%d, %s)",
-                   index, res, symbolic(urb_errlist, res))
-
-       return (res >= 0) ? (int)(*buff) : -1;
-}
-
-
-/*--------------------------------------------------------------------------
-  Write 64-bit data to the fast serial bus registers.
-  Return 0 on success, -1 otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_write_fsb(struct w9968cf_device* cam, u16* data)
-{
-       struct usb_device* udev = cam->usbdev;
-       u16 value;
-       int res;
-
-       value = *data++;
-
-       res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0,
-                             USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
-                             value, 0x06, data, 6, W9968CF_USB_CTRL_TIMEOUT);
-
-       if (res < 0)
-               DBG(4, "Failed to write the FSB registers "
-                      "(error #%d, %s)", res, symbolic(urb_errlist, res))
-
-       return (res >= 0) ? 0 : -1;
-}
-
-
-/*--------------------------------------------------------------------------
-  Write data to the serial bus control register.
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_write_sb(struct w9968cf_device* cam, u16 value)
-{
-       int err = 0;
-
-       err = w9968cf_write_reg(cam, value, 0x01);
-       udelay(W9968CF_I2C_BUS_DELAY);
-
-       return err;
-}
-
-
-/*--------------------------------------------------------------------------
-  Read data from the serial bus control register.
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_read_sb(struct w9968cf_device* cam)
-{
-       int v = 0;
-
-       v = w9968cf_read_reg(cam, 0x01);
-       udelay(W9968CF_I2C_BUS_DELAY);
-
-       return v;
-}
-
-
-/*--------------------------------------------------------------------------
-  Upload quantization tables for the JPEG compression.
-  This function is called by w9968cf_start_transfer().
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_upload_quantizationtables(struct w9968cf_device* cam)
-{
-       u16 a, b;
-       int err = 0, i, j;
-
-       err += w9968cf_write_reg(cam, 0x0010, 0x39); /* JPEG clock enable */
-
-       for (i = 0, j = 0; i < 32; i++, j += 2) {
-               a = Y_QUANTABLE[j] | ((unsigned)(Y_QUANTABLE[j+1]) << 8);
-               b = UV_QUANTABLE[j] | ((unsigned)(UV_QUANTABLE[j+1]) << 8);
-               err += w9968cf_write_reg(cam, a, 0x40+i);
-               err += w9968cf_write_reg(cam, b, 0x60+i);
-       }
-       err += w9968cf_write_reg(cam, 0x0012, 0x39); /* JPEG encoder enable */
-
-       return err;
-}
-
-
-
-/****************************************************************************
- * Low-level I2C I/O functions.                                             *
- * The adapter supports the following I2C transfer functions:               *
- * i2c_adap_fastwrite_byte_data() (at 400 kHz bit frequency only)           *
- * i2c_adap_read_byte_data()                                                *
- * i2c_adap_read_byte()                                                     *
- ****************************************************************************/
-
-static int w9968cf_smbus_start(struct w9968cf_device* cam)
-{
-       int err = 0;
-
-       err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */
-       err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */
-
-       return err;
-}
-
-
-static int w9968cf_smbus_stop(struct w9968cf_device* cam)
-{
-       int err = 0;
-
-       err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */
-       err += w9968cf_write_sb(cam, 0x0013); /* SDE=1, SDA=1, SCL=1 */
-
-       return err;
-}
-
-
-static int w9968cf_smbus_write_byte(struct w9968cf_device* cam, u8 v)
-{
-       u8 bit;
-       int err = 0, sda;
-
-       for (bit = 0 ; bit < 8 ; bit++) {
-               sda = (v & 0x80) ? 2 : 0;
-               v <<= 1;
-               /* SDE=1, SDA=sda, SCL=0 */
-               err += w9968cf_write_sb(cam, 0x10 | sda);
-               /* SDE=1, SDA=sda, SCL=1 */
-               err += w9968cf_write_sb(cam, 0x11 | sda);
-               /* SDE=1, SDA=sda, SCL=0 */
-               err += w9968cf_write_sb(cam, 0x10 | sda);
-       }
-
-       return err;
-}
-
-
-static int w9968cf_smbus_read_byte(struct w9968cf_device* cam, u8* v)
-{
-       u8 bit;
-       int err = 0;
-
-       *v = 0;
-       for (bit = 0 ; bit < 8 ; bit++) {
-               *v <<= 1;
-               err += w9968cf_write_sb(cam, 0x0013);
-               *v |= (w9968cf_read_sb(cam) & 0x0008) ? 1 : 0;
-               err += w9968cf_write_sb(cam, 0x0012);
-       }
-
-       return err;
-}
-
-
-static int w9968cf_smbus_write_ack(struct w9968cf_device* cam)
-{
-       int err = 0;
-
-       err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */
-       err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */
-       err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */
-
-       return err;
-}
-
-
-static int w9968cf_smbus_read_ack(struct w9968cf_device* cam)
-{
-       int err = 0, sda;
-
-       err += w9968cf_write_sb(cam, 0x0013); /* SDE=1, SDA=1, SCL=1 */
-       sda = (w9968cf_read_sb(cam) & 0x08) ? 1 : 0; /* sda = SDA */
-       err += w9968cf_write_sb(cam, 0x0012); /* SDE=1, SDA=1, SCL=0 */
-       if (sda < 0)
-               err += sda;
-       if (sda == 1) {
-               DBG(6, "Couldn't receive the ACK")
-               err += -1;
-       }
-
-       return err;
-}
-
-
-/* This seems to refresh the communication through the serial bus */
-static int w9968cf_smbus_refresh_bus(struct w9968cf_device* cam)
-{
-       int err = 0, j;
-
-       for (j = 1; j <= 10; j++) {
-               err = w9968cf_write_reg(cam, 0x0020, 0x01);
-               err += w9968cf_write_reg(cam, 0x0000, 0x01);
-               if (err)
-                       break;
-       }
-
-       return err;
-}
-
-
-/* SMBus protocol: S Addr Wr [A] Subaddr [A] Value [A] P */
-static int
-w9968cf_i2c_adap_fastwrite_byte_data(struct w9968cf_device* cam,
-                                    u16 address, u8 subaddress,u8 value)
-{
-       u16* data = cam->data_buffer;
-       int err = 0;
-
-       err += w9968cf_smbus_refresh_bus(cam);
-
-       /* Enable SBUS outputs */
-       err += w9968cf_write_sb(cam, 0x0020);
-
-       data[0] = 0x082f | ((address & 0x80) ? 0x1500 : 0x0);
-       data[0] |= (address & 0x40) ? 0x4000 : 0x0;
-       data[1] = 0x2082 | ((address & 0x40) ? 0x0005 : 0x0);
-       data[1] |= (address & 0x20) ? 0x0150 : 0x0;
-       data[1] |= (address & 0x10) ? 0x5400 : 0x0;
-       data[2] = 0x8208 | ((address & 0x08) ? 0x0015 : 0x0);
-       data[2] |= (address & 0x04) ? 0x0540 : 0x0;
-       data[2] |= (address & 0x02) ? 0x5000 : 0x0;
-       data[3] = 0x1d20 | ((address & 0x02) ? 0x0001 : 0x0);
-       data[3] |= (address & 0x01) ? 0x0054 : 0x0;
-
-       err += w9968cf_write_fsb(cam, data);
-
-       data[0] = 0x8208 | ((subaddress & 0x80) ? 0x0015 : 0x0);
-       data[0] |= (subaddress & 0x40) ? 0x0540 : 0x0;
-       data[0] |= (subaddress & 0x20) ? 0x5000 : 0x0;
-       data[1] = 0x0820 | ((subaddress & 0x20) ? 0x0001 : 0x0);
-       data[1] |= (subaddress & 0x10) ? 0x0054 : 0x0;
-       data[1] |= (subaddress & 0x08) ? 0x1500 : 0x0;
-       data[1] |= (subaddress & 0x04) ? 0x4000 : 0x0;
-       data[2] = 0x2082 | ((subaddress & 0x04) ? 0x0005 : 0x0);
-       data[2] |= (subaddress & 0x02) ? 0x0150 : 0x0;
-       data[2] |= (subaddress & 0x01) ? 0x5400 : 0x0;
-       data[3] = 0x001d;
-
-       err += w9968cf_write_fsb(cam, data);
-
-       data[0] = 0x8208 | ((value & 0x80) ? 0x0015 : 0x0);
-       data[0] |= (value & 0x40) ? 0x0540 : 0x0;
-       data[0] |= (value & 0x20) ? 0x5000 : 0x0;
-       data[1] = 0x0820 | ((value & 0x20) ? 0x0001 : 0x0);
-       data[1] |= (value & 0x10) ? 0x0054 : 0x0;
-       data[1] |= (value & 0x08) ? 0x1500 : 0x0;
-       data[1] |= (value & 0x04) ? 0x4000 : 0x0;
-       data[2] = 0x2082 | ((value & 0x04) ? 0x0005 : 0x0);
-       data[2] |= (value & 0x02) ? 0x0150 : 0x0;
-       data[2] |= (value & 0x01) ? 0x5400 : 0x0;
-       data[3] = 0xfe1d;
-
-       err += w9968cf_write_fsb(cam, data);
-
-       /* Disable SBUS outputs */
-       err += w9968cf_write_sb(cam, 0x0000);
-
-       if (!err)
-               DBG(5, "I2C write byte data done, addr.0x%04X, subaddr.0x%02X "
-                      "value 0x%02X", address, subaddress, value)
-       else
-               DBG(5, "I2C write byte data failed, addr.0x%04X, "
-                      "subaddr.0x%02X, value 0x%02X",
-                   address, subaddress, value)
-
-       return err;
-}
-
-
-/* SMBus protocol: S Addr Wr [A] Subaddr [A] P S Addr+1 Rd [A] [Value] NA P */
-static int
-w9968cf_i2c_adap_read_byte_data(struct w9968cf_device* cam,
-                               u16 address, u8 subaddress,
-                               u8* value)
-{
-       int err = 0;
-
-       /* Serial data enable */
-       err += w9968cf_write_sb(cam, 0x0013); /* don't change ! */
-
-       err += w9968cf_smbus_start(cam);
-       err += w9968cf_smbus_write_byte(cam, address);
-       err += w9968cf_smbus_read_ack(cam);
-       err += w9968cf_smbus_write_byte(cam, subaddress);
-       err += w9968cf_smbus_read_ack(cam);
-       err += w9968cf_smbus_stop(cam);
-       err += w9968cf_smbus_start(cam);
-       err += w9968cf_smbus_write_byte(cam, address + 1);
-       err += w9968cf_smbus_read_ack(cam);
-       err += w9968cf_smbus_read_byte(cam, value);
-       err += w9968cf_smbus_write_ack(cam);
-       err += w9968cf_smbus_stop(cam);
-
-       /* Serial data disable */
-       err += w9968cf_write_sb(cam, 0x0000);
-
-       if (!err)
-               DBG(5, "I2C read byte data done, addr.0x%04X, "
-                      "subaddr.0x%02X, value 0x%02X",
-                   address, subaddress, *value)
-       else
-               DBG(5, "I2C read byte data failed, addr.0x%04X, "
-                      "subaddr.0x%02X, wrong value 0x%02X",
-                   address, subaddress, *value)
-
-       return err;
-}
-
-
-/* SMBus protocol: S Addr+1 Rd [A] [Value] NA P */
-static int
-w9968cf_i2c_adap_read_byte(struct w9968cf_device* cam,
-                          u16 address, u8* value)
-{
-       int err = 0;
-
-       /* Serial data enable */
-       err += w9968cf_write_sb(cam, 0x0013);
-
-       err += w9968cf_smbus_start(cam);
-       err += w9968cf_smbus_write_byte(cam, address + 1);
-       err += w9968cf_smbus_read_ack(cam);
-       err += w9968cf_smbus_read_byte(cam, value);
-       err += w9968cf_smbus_write_ack(cam);
-       err += w9968cf_smbus_stop(cam);
-
-       /* Serial data disable */
-       err += w9968cf_write_sb(cam, 0x0000);
-
-       if (!err)
-               DBG(5, "I2C read byte done, addr.0x%04X, "
-                      "value 0x%02X", address, *value)
-       else
-               DBG(5, "I2C read byte failed, addr.0x%04X, "
-                      "wrong value 0x%02X", address, *value)
-
-       return err;
-}
-
-
-/* SMBus protocol: S Addr Wr [A] Value [A] P */
-static int
-w9968cf_i2c_adap_write_byte(struct w9968cf_device* cam,
-                           u16 address, u8 value)
-{
-       DBG(4, "i2c_write_byte() is an unsupported transfer mode")
-       return -EINVAL;
-}
-
-
-
-/****************************************************************************
- * I2C interface to kernel                                                  *
- ****************************************************************************/
-
-static int
-w9968cf_i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
-                      unsigned short flags, char read_write, u8 command,
-                      int size, union i2c_smbus_data *data)
-{
-       struct v4l2_device *v4l2_dev = i2c_get_adapdata(adapter);
-       struct w9968cf_device *cam = to_cam(v4l2_dev);
-       u8 i;
-       int err = 0;
-
-       if (size == I2C_SMBUS_BYTE) {
-               /* Why addr <<= 1? See OVXXX0_SID defines in ovcamchip.h */
-               addr <<= 1;
-
-               if (read_write == I2C_SMBUS_WRITE)
-                       err = w9968cf_i2c_adap_write_byte(cam, addr, command);
-               else if (read_write == I2C_SMBUS_READ)
-                       for (i = 1; i <= W9968CF_I2C_RW_RETRIES; i++) {
-                               err = w9968cf_i2c_adap_read_byte(cam, addr,
-                                                        &data->byte);
-                               if (err) {
-                                       if (w9968cf_smbus_refresh_bus(cam)) {
-                                               err = -EIO;
-                                               break;
-                                       }
-                               } else
-                                       break;
-                       }
-       } else if (size == I2C_SMBUS_BYTE_DATA) {
-               addr <<= 1;
-
-               if (read_write == I2C_SMBUS_WRITE)
-                       err = w9968cf_i2c_adap_fastwrite_byte_data(cam, addr,
-                                                         command, data->byte);
-               else if (read_write == I2C_SMBUS_READ) {
-                       for (i = 1; i <= W9968CF_I2C_RW_RETRIES; i++) {
-                               err = w9968cf_i2c_adap_read_byte_data(cam,addr,
-                                                        command, &data->byte);
-                               if (err) {
-                                       if (w9968cf_smbus_refresh_bus(cam)) {
-                                               err = -EIO;
-                                               break;
-                                       }
-                               } else
-                                       break;
-                       }
-
-               } else
-                       return -EINVAL;
-
-       } else {
-               DBG(4, "Unsupported I2C transfer mode (%d)", size)
-               return -EINVAL;
-       }
-       return err;
-}
-
-
-static u32 w9968cf_i2c_func(struct i2c_adapter* adap)
-{
-       return I2C_FUNC_SMBUS_READ_BYTE |
-              I2C_FUNC_SMBUS_READ_BYTE_DATA  |
-              I2C_FUNC_SMBUS_WRITE_BYTE_DATA;
-}
-
-
-static int w9968cf_i2c_init(struct w9968cf_device* cam)
-{
-       int err = 0;
-
-       static struct i2c_algorithm algo = {
-               .smbus_xfer =    w9968cf_i2c_smbus_xfer,
-               .functionality = w9968cf_i2c_func,
-       };
-
-       static struct i2c_adapter adap = {
-               .owner =             THIS_MODULE,
-               .algo =              &algo,
-       };
-
-       memcpy(&cam->i2c_adapter, &adap, sizeof(struct i2c_adapter));
-       strcpy(cam->i2c_adapter.name, "w9968cf");
-       cam->i2c_adapter.dev.parent = &cam->usbdev->dev;
-       i2c_set_adapdata(&cam->i2c_adapter, &cam->v4l2_dev);
-
-       DBG(6, "Registering I2C adapter with kernel...")
-
-       err = i2c_add_adapter(&cam->i2c_adapter);
-       if (err)
-               DBG(1, "Failed to register the I2C adapter")
-       else
-               DBG(5, "I2C adapter registered")
-
-       return err;
-}
-
-
-
-/****************************************************************************
- * Helper functions                                                         *
- ****************************************************************************/
-
-/*--------------------------------------------------------------------------
-  Turn on the LED on some webcams. A beep should be heard too.
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_turn_on_led(struct w9968cf_device* cam)
-{
-       int err = 0;
-
-       err += w9968cf_write_reg(cam, 0xff00, 0x00); /* power-down */
-       err += w9968cf_write_reg(cam, 0xbf17, 0x00); /* reset everything */
-       err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* normal operation */
-       err += w9968cf_write_reg(cam, 0x0010, 0x01); /* serial bus, SDS high */
-       err += w9968cf_write_reg(cam, 0x0000, 0x01); /* serial bus, SDS low */
-       err += w9968cf_write_reg(cam, 0x0010, 0x01); /* ..high 'beep-beep' */
-
-       if (err)
-               DBG(2, "Couldn't turn on the LED")
-
-       DBG(5, "LED turned on")
-
-       return err;
-}
-
-
-/*--------------------------------------------------------------------------
-  Write some registers for the device initialization.
-  This function is called once on open().
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_init_chip(struct w9968cf_device* cam)
-{
-       unsigned long hw_bufsize = cam->maxwidth*cam->maxheight*2,
-                     y0 = 0x0000,
-                     u0 = y0 + hw_bufsize/2,
-                     v0 = u0 + hw_bufsize/4,
-                     y1 = v0 + hw_bufsize/4,
-                     u1 = y1 + hw_bufsize/2,
-                     v1 = u1 + hw_bufsize/4;
-       int err = 0;
-
-       err += w9968cf_write_reg(cam, 0xff00, 0x00); /* power off */
-       err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* power on */
-
-       err += w9968cf_write_reg(cam, 0x405d, 0x03); /* DRAM timings */
-       err += w9968cf_write_reg(cam, 0x0030, 0x04); /* SDRAM timings */
-
-       err += w9968cf_write_reg(cam, y0 & 0xffff, 0x20); /* Y buf.0, low */
-       err += w9968cf_write_reg(cam, y0 >> 16, 0x21);    /* Y buf.0, high */
-       err += w9968cf_write_reg(cam, u0 & 0xffff, 0x24); /* U buf.0, low */
-       err += w9968cf_write_reg(cam, u0 >> 16, 0x25);    /* U buf.0, high */
-       err += w9968cf_write_reg(cam, v0 & 0xffff, 0x28); /* V buf.0, low */
-       err += w9968cf_write_reg(cam, v0 >> 16, 0x29);    /* V buf.0, high */
-
-       err += w9968cf_write_reg(cam, y1 & 0xffff, 0x22); /* Y buf.1, low */
-       err += w9968cf_write_reg(cam, y1 >> 16, 0x23);    /* Y buf.1, high */
-       err += w9968cf_write_reg(cam, u1 & 0xffff, 0x26); /* U buf.1, low */
-       err += w9968cf_write_reg(cam, u1 >> 16, 0x27);    /* U buf.1, high */
-       err += w9968cf_write_reg(cam, v1 & 0xffff, 0x2a); /* V buf.1, low */
-       err += w9968cf_write_reg(cam, v1 >> 16, 0x2b);    /* V buf.1, high */
-
-       err += w9968cf_write_reg(cam, y1 & 0xffff, 0x32); /* JPEG buf 0 low */
-       err += w9968cf_write_reg(cam, y1 >> 16, 0x33);    /* JPEG buf 0 high */
-
-       err += w9968cf_write_reg(cam, y1 & 0xffff, 0x34); /* JPEG buf 1 low */
-       err += w9968cf_write_reg(cam, y1 >> 16, 0x35);    /* JPEG bug 1 high */
-
-       err += w9968cf_write_reg(cam, 0x0000, 0x36);/* JPEG restart interval */
-       err += w9968cf_write_reg(cam, 0x0804, 0x37);/*JPEG VLE FIFO threshold*/
-       err += w9968cf_write_reg(cam, 0x0000, 0x38);/* disable hw up-scaling */
-       err += w9968cf_write_reg(cam, 0x0000, 0x3f); /* JPEG/MCTL test data */
-
-       err += w9968cf_set_picture(cam, cam->picture); /* this before */
-       err += w9968cf_set_window(cam, cam->window);
-
-       if (err)
-               DBG(1, "Chip initialization failed")
-       else
-               DBG(5, "Chip successfully initialized")
-
-       return err;
-}
-
-
-/*--------------------------------------------------------------------------
-  Return non-zero if the palette is supported, 0 otherwise.
-  --------------------------------------------------------------------------*/
-static inline u16 w9968cf_valid_palette(u16 palette)
-{
-       u8 i = 0;
-       while (w9968cf_formatlist[i].palette != 0) {
-               if (palette == w9968cf_formatlist[i].palette)
-                       return palette;
-               i++;
-       }
-       return 0;
-}
-
-
-/*--------------------------------------------------------------------------
-  Return the depth corresponding to the given palette.
-  Palette _must_ be supported !
-  --------------------------------------------------------------------------*/
-static inline u16 w9968cf_valid_depth(u16 palette)
-{
-       u8 i=0;
-       while (w9968cf_formatlist[i].palette != palette)
-               i++;
-
-       return w9968cf_formatlist[i].depth;
-}
-
-
-/*--------------------------------------------------------------------------
-  Return non-zero if the format requires decompression, 0 otherwise.
-  --------------------------------------------------------------------------*/
-static inline u8 w9968cf_need_decompression(u16 palette)
-{
-       u8 i = 0;
-       while (w9968cf_formatlist[i].palette != 0) {
-               if (palette == w9968cf_formatlist[i].palette)
-                       return w9968cf_formatlist[i].compression;
-               i++;
-       }
-       return 0;
-}
-
-
-/*--------------------------------------------------------------------------
-  Change the picture settings of the camera.
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int
-w9968cf_set_picture(struct w9968cf_device* cam, struct video_picture pict)
-{
-       u16 fmt, hw_depth, hw_palette, reg_v = 0x0000;
-       int err = 0;
-
-       /* Make sure we are using a valid depth */
-       pict.depth = w9968cf_valid_depth(pict.palette);
-
-       fmt = pict.palette;
-
-       hw_depth = pict.depth; /* depth used by the winbond chip */
-       hw_palette = pict.palette; /* palette used by the winbond chip */
-
-       /* VS & HS polarities */
-       reg_v = (cam->vs_polarity << 12) | (cam->hs_polarity << 11);
-
-       switch (fmt)
-       {
-               case VIDEO_PALETTE_UYVY:
-                       reg_v |= 0x0000;
-                       cam->vpp_flag = VPP_NONE;
-                       break;
-               case VIDEO_PALETTE_YUV422P:
-                       reg_v |= 0x0002;
-                       cam->vpp_flag = VPP_DECOMPRESSION;
-                       break;
-               case VIDEO_PALETTE_YUV420:
-               case VIDEO_PALETTE_YUV420P:
-                       reg_v |= 0x0003;
-                       cam->vpp_flag = VPP_DECOMPRESSION;
-                       break;
-               case VIDEO_PALETTE_YUYV:
-               case VIDEO_PALETTE_YUV422:
-                       reg_v |= 0x0000;
-                       cam->vpp_flag = VPP_SWAP_YUV_BYTES;
-                       hw_palette = VIDEO_PALETTE_UYVY;
-                       break;
-               /* Original video is used instead of RGBX palettes.
-                  Software conversion later. */
-               case VIDEO_PALETTE_GREY:
-               case VIDEO_PALETTE_RGB555:
-               case VIDEO_PALETTE_RGB565:
-               case VIDEO_PALETTE_RGB24:
-               case VIDEO_PALETTE_RGB32:
-                       reg_v |= 0x0000; /* UYVY 16 bit is used */
-                       hw_depth = 16;
-                       hw_palette = VIDEO_PALETTE_UYVY;
-                       cam->vpp_flag = VPP_UYVY_TO_RGBX;
-                       break;
-       }
-
-       /* NOTE: due to memory issues, it is better to disable the hardware
-                double buffering during compression */
-       if (cam->double_buffer && !(cam->vpp_flag & VPP_DECOMPRESSION))
-               reg_v |= 0x0080;
-
-       if (cam->clamping)
-               reg_v |= 0x0020;
-
-       if (cam->filter_type == 1)
-               reg_v |= 0x0008;
-       else if (cam->filter_type == 2)
-               reg_v |= 0x000c;
-
-       if ((err = w9968cf_write_reg(cam, reg_v, 0x16)))
-               goto error;
-
-       if ((err = w9968cf_sensor_update_picture(cam, pict)))
-               goto error;
-
-       /* If all went well, update the device data structure */
-       memcpy(&cam->picture, &pict, sizeof(pict));
-       cam->hw_depth = hw_depth;
-       cam->hw_palette = hw_palette;
-
-       /* Settings changed, so we clear the frame buffers */
-       memset(cam->frame[0].buffer, 0, cam->nbuffers*cam->frame[0].size);
-
-       DBG(4, "Palette is %s, depth is %u bpp",
-           symbolic(v4l1_plist, pict.palette), pict.depth)
-
-       return 0;
-
-error:
-       DBG(1, "Failed to change picture settings")
-       return err;
-}
-
-
-/*--------------------------------------------------------------------------
-  Change the capture area size of the camera.
-  This function _must_ be called _after_ w9968cf_set_picture().
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int
-w9968cf_set_window(struct w9968cf_device* cam, struct video_window win)
-{
-       u16 x, y, w, h, scx, scy, cw, ch, ax, ay;
-       unsigned long fw, fh;
-       struct ovcamchip_window s_win;
-       int err = 0;
-
-       /* Work around to avoid FP arithmetics */
-       #define SC(x) ((x) << 10)
-       #define UNSC(x) ((x) >> 10)
-
-       /* Make sure we are using a supported resolution */
-       if ((err = w9968cf_adjust_window_size(cam, &win.width, &win.height)))
-               goto error;
-
-       /* Scaling factors */
-       fw = SC(win.width) / cam->maxwidth;
-       fh = SC(win.height) / cam->maxheight;
-
-       /* Set up the width and height values used by the chip */
-       if ((win.width > cam->maxwidth) || (win.height > cam->maxheight)) {
-               cam->vpp_flag |= VPP_UPSCALE;
-               /* Calculate largest w,h mantaining the same w/h ratio */
-               w = (fw >= fh) ? cam->maxwidth : SC(win.width)/fh;
-               h = (fw >= fh) ? SC(win.height)/fw : cam->maxheight;
-               if (w < cam->minwidth) /* just in case */
-                       w = cam->minwidth;
-               if (h < cam->minheight) /* just in case */
-                       h = cam->minheight;
-       } else {
-               cam->vpp_flag &= ~VPP_UPSCALE;
-               w = win.width;
-               h = win.height;
-       }
-
-       /* x,y offsets of the cropped area */
-       scx = cam->start_cropx;
-       scy = cam->start_cropy;
-
-       /* Calculate cropped area manteining the right w/h ratio */
-       if (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE)) {
-               cw = (fw >= fh) ? cam->maxwidth : SC(win.width)/fh;
-               ch = (fw >= fh) ? SC(win.height)/fw : cam->maxheight;
-       } else {
-               cw = w;
-               ch = h;
-       }
-
-       /* Setup the window of the sensor */
-       s_win.format = VIDEO_PALETTE_UYVY;
-       s_win.width = cam->maxwidth;
-       s_win.height = cam->maxheight;
-       s_win.quarter = 0; /* full progressive video */
-
-       /* Center it */
-       s_win.x = (s_win.width - cw) / 2;
-       s_win.y = (s_win.height - ch) / 2;
-
-       /* Clock divisor */
-       if (cam->clockdiv >= 0)
-               s_win.clockdiv = cam->clockdiv; /* manual override */
-       else
-               switch (cam->sensor) {
-                       case CC_OV6620:
-                               s_win.clockdiv = 0;
-                               break;
-                       case CC_OV6630:
-                               s_win.clockdiv = 0;
-                               break;
-                       case CC_OV76BE:
-                       case CC_OV7610:
-                       case CC_OV7620:
-                               s_win.clockdiv = 0;
-                               break;
-                       default:
-                               s_win.clockdiv = W9968CF_DEF_CLOCKDIVISOR;
-               }
-
-       /* We have to scale win.x and win.y offsets */
-       if ( (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE))
-            || (cam->vpp_flag & VPP_UPSCALE) ) {
-               ax = SC(win.x)/fw;
-               ay = SC(win.y)/fh;
-       } else {
-               ax = win.x;
-               ay = win.y;
-       }
-
-       if ((ax + cw) > cam->maxwidth)
-               ax = cam->maxwidth - cw;
-
-       if ((ay + ch) > cam->maxheight)
-               ay = cam->maxheight - ch;
-
-       /* Adjust win.x, win.y */
-       if ( (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE))
-            || (cam->vpp_flag & VPP_UPSCALE) ) {
-               win.x = UNSC(ax*fw);
-               win.y = UNSC(ay*fh);
-       } else {
-               win.x = ax;
-               win.y = ay;
-       }
-
-       /* Offsets used by the chip */
-       x = ax + s_win.x;
-       y = ay + s_win.y;
-
-       /* Go ! */
-       if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_S_MODE, &s_win)))
-               goto error;
-
-       err += w9968cf_write_reg(cam, scx + x, 0x10);
-       err += w9968cf_write_reg(cam, scy + y, 0x11);
-       err += w9968cf_write_reg(cam, scx + x + cw, 0x12);
-       err += w9968cf_write_reg(cam, scy + y + ch, 0x13);
-       err += w9968cf_write_reg(cam, w, 0x14);
-       err += w9968cf_write_reg(cam, h, 0x15);
-
-       /* JPEG width & height */
-       err += w9968cf_write_reg(cam, w, 0x30);
-       err += w9968cf_write_reg(cam, h, 0x31);
-
-       /* Y & UV frame buffer strides (in WORD) */
-       if (cam->vpp_flag & VPP_DECOMPRESSION) {
-               err += w9968cf_write_reg(cam, w/2, 0x2c);
-               err += w9968cf_write_reg(cam, w/4, 0x2d);
-       } else
-               err += w9968cf_write_reg(cam, w, 0x2c);
-
-       if (err)
-               goto error;
-
-       /* If all went well, update the device data structure */
-       memcpy(&cam->window, &win, sizeof(win));
-       cam->hw_width = w;
-       cam->hw_height = h;
-
-       /* Settings changed, so we clear the frame buffers */
-       memset(cam->frame[0].buffer, 0, cam->nbuffers*cam->frame[0].size);
-
-       DBG(4, "The capture area is %dx%d, Offset (x,y)=(%u,%u)",
-           win.width, win.height, win.x, win.y)
-
-       PDBGG("x=%u ,y=%u, w=%u, h=%u, ax=%u, ay=%u, s_win.x=%u, s_win.y=%u, "
-             "cw=%u, ch=%u, win.x=%u, win.y=%u, win.width=%u, win.height=%u",
-             x, y, w, h, ax, ay, s_win.x, s_win.y, cw, ch, win.x, win.y,
-             win.width, win.height)
-
-       return 0;
-
-error:
-       DBG(1, "Failed to change the capture area size")
-       return err;
-}
-
-
-/*--------------------------------------------------------------------------
-  Adjust the asked values for window width and height.
-  Return 0 on success, -1 otherwise.
-  --------------------------------------------------------------------------*/
-static int
-w9968cf_adjust_window_size(struct w9968cf_device *cam, u32 *width, u32 *height)
-{
-       unsigned int maxw, maxh, align;
-
-       maxw = cam->upscaling && !(cam->vpp_flag & VPP_DECOMPRESSION) &&
-              w9968cf_vpp ? max((u16)W9968CF_MAX_WIDTH, cam->maxwidth)
-                          : cam->maxwidth;
-       maxh = cam->upscaling && !(cam->vpp_flag & VPP_DECOMPRESSION) &&
-              w9968cf_vpp ? max((u16)W9968CF_MAX_HEIGHT, cam->maxheight)
-                          : cam->maxheight;
-       align = (cam->vpp_flag & VPP_DECOMPRESSION) ? 4 : 0;
-
-       v4l_bound_align_image(width, cam->minwidth, maxw, align,
-                             height, cam->minheight, maxh, align, 0);
-
-       PDBGG("Window size adjusted w=%u, h=%u ", *width, *height)
-
-       return 0;
-}
-
-
-/*--------------------------------------------------------------------------
-  Initialize the FIFO list of requested frames.
-  --------------------------------------------------------------------------*/
-static void w9968cf_init_framelist(struct w9968cf_device* cam)
-{
-       u8 i;
-
-       for (i = 0; i < cam->nbuffers; i++) {
-               cam->requested_frame[i] = NULL;
-               cam->frame[i].queued = 0;
-               cam->frame[i].status = F_UNUSED;
-       }
-}
-
-
-/*--------------------------------------------------------------------------
-  Add a frame in the FIFO list of requested frames.
-  This function is called in process context.
-  --------------------------------------------------------------------------*/
-static void w9968cf_push_frame(struct w9968cf_device* cam, u8 f_num)
-{
-       u8 f;
-       unsigned long lock_flags;
-
-       spin_lock_irqsave(&cam->flist_lock, lock_flags);
-
-       for (f=0; cam->requested_frame[f] != NULL; f++);
-       cam->requested_frame[f] = &cam->frame[f_num];
-       cam->frame[f_num].queued = 1;
-       cam->frame[f_num].status = F_UNUSED; /* clear the status */
-
-       spin_unlock_irqrestore(&cam->flist_lock, lock_flags);
-
-       DBG(6, "Frame #%u pushed into the FIFO list. Position %u", f_num, f)
-}
-
-
-/*--------------------------------------------------------------------------
-  Read, store and remove the first pointer in the FIFO list of requested
-  frames. This function is called in interrupt context.
-  --------------------------------------------------------------------------*/
-static void
-w9968cf_pop_frame(struct w9968cf_device* cam, struct w9968cf_frame_t** framep)
-{
-       u8 i;
-
-       spin_lock(&cam->flist_lock);
-
-       *framep = cam->requested_frame[0];
-
-       /* Shift the list of pointers */
-       for (i = 0; i < cam->nbuffers-1; i++)
-               cam->requested_frame[i] = cam->requested_frame[i+1];
-       cam->requested_frame[i] = NULL;
-
-       spin_unlock(&cam->flist_lock);
-
-       DBG(6,"Popped frame #%d from the list", (*framep)->number)
-}
-
-
-/*--------------------------------------------------------------------------
-  High-level video post-processing routine on grabbed frames.
-  Return 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int
-w9968cf_postprocess_frame(struct w9968cf_device* cam,
-                         struct w9968cf_frame_t* fr)
-{
-       void *pIn = fr->buffer, *pOut = cam->frame_vpp.buffer, *tmp;
-       u16 w = cam->window.width,
-           h = cam->window.height,
-           d = cam->picture.depth,
-           fmt = cam->picture.palette,
-           rgb = cam->force_rgb,
-           hw_w = cam->hw_width,
-           hw_h = cam->hw_height,
-           hw_d = cam->hw_depth;
-       int err = 0;
-
-       #define _PSWAP(pIn, pOut) {tmp = (pIn); (pIn) = (pOut); (pOut) = tmp;}
-
-       if (cam->vpp_flag & VPP_DECOMPRESSION) {
-               memcpy(pOut, pIn, fr->length);
-               _PSWAP(pIn, pOut)
-               err = w9968cf_vpp->decode(pIn, fr->length, hw_w, hw_h, pOut);
-               PDBGG("Compressed frame length: %lu",(unsigned long)fr->length)
-               fr->length = (hw_w*hw_h*hw_d)/8;
-               _PSWAP(pIn, pOut)
-               if (err) {
-                       DBG(4, "An error occurred while decoding the frame: "
-                              "%s", symbolic(decoder_errlist, err))
-                       return err;
-               } else
-                       DBG(6, "Frame decoded")
-       }
-
-       if (cam->vpp_flag & VPP_SWAP_YUV_BYTES) {
-               w9968cf_vpp->swap_yuvbytes(pIn, fr->length);
-               DBG(6, "Original UYVY component ordering changed")
-       }
-
-       if (cam->vpp_flag & VPP_UPSCALE) {
-               w9968cf_vpp->scale_up(pIn, pOut, hw_w, hw_h, hw_d, w, h);
-               fr->length = (w*h*hw_d)/8;
-               _PSWAP(pIn, pOut)
-               DBG(6, "Vertical up-scaling done: %u,%u,%ubpp->%u,%u",
-                   hw_w, hw_h, hw_d, w, h)
-       }
-
-       if (cam->vpp_flag & VPP_UYVY_TO_RGBX) {
-               w9968cf_vpp->uyvy_to_rgbx(pIn, fr->length, pOut, fmt, rgb);
-               fr->length = (w*h*d)/8;
-               _PSWAP(pIn, pOut)
-               DBG(6, "UYVY-16bit to %s conversion done",
-                   symbolic(v4l1_plist, fmt))
-       }
-
-       if (pOut == fr->buffer)
-               memcpy(fr->buffer, cam->frame_vpp.buffer, fr->length);
-
-       return 0;
-}
-
-
-
-/****************************************************************************
- * Image sensor control routines                                            *
- ****************************************************************************/
-
-static int
-w9968cf_sensor_set_control(struct w9968cf_device* cam, int cid, int val)
-{
-       struct ovcamchip_control ctl;
-       int err;
-
-       ctl.id = cid;
-       ctl.value = val;
-
-       err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_S_CTRL, &ctl);
-
-       return err;
-}
-
-
-static int
-w9968cf_sensor_get_control(struct w9968cf_device* cam, int cid, int* val)
-{
-       struct ovcamchip_control ctl;
-       int err;
-
-       ctl.id = cid;
-
-       err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_G_CTRL, &ctl);
-       if (!err)
-               *val = ctl.value;
-
-       return err;
-}
-
-
-static int
-w9968cf_sensor_cmd(struct w9968cf_device* cam, unsigned int cmd, void* arg)
-{
-       int rc;
-
-       rc = v4l2_subdev_call(cam->sensor_sd, core, ioctl, cmd, arg);
-       /* The I2C driver returns -EPERM on non-supported controls */
-       return (rc < 0 && rc != -EPERM) ? rc : 0;
-}
-
-
-/*--------------------------------------------------------------------------
-  Update some settings of the image sensor.
-  Returns: 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_sensor_update_settings(struct w9968cf_device* cam)
-{
-       int err = 0;
-
-       /* Auto brightness */
-       err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_AUTOBRIGHT,
-                                        cam->auto_brt);
-       if (err)
-               return err;
-
-       /* Auto exposure */
-       err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_AUTOEXP,
-                                        cam->auto_exp);
-       if (err)
-               return err;
-
-       /* Banding filter */
-       err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BANDFILT,
-                                        cam->bandfilt);
-       if (err)
-               return err;
-
-       /* Light frequency */
-       err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_FREQ,
-                                        cam->lightfreq);
-       if (err)
-               return err;
-
-       /* Back light */
-       err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BACKLIGHT,
-                                        cam->backlight);
-       if (err)
-               return err;
-
-       /* Mirror */
-       err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_MIRROR,
-                                        cam->mirror);
-       if (err)
-               return err;
-
-       return 0;
-}
-
-
-/*--------------------------------------------------------------------------
-  Get some current picture settings from the image sensor and update the
-  internal 'picture' structure of the camera.
-  Returns: 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_sensor_get_picture(struct w9968cf_device* cam)
-{
-       int err, v;
-
-       err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_CONT, &v);
-       if (err)
-               return err;
-       cam->picture.contrast = v;
-
-       err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_BRIGHT, &v);
-       if (err)
-               return err;
-       cam->picture.brightness = v;
-
-       err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_SAT, &v);
-       if (err)
-               return err;
-       cam->picture.colour = v;
-
-       err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_HUE, &v);
-       if (err)
-               return err;
-       cam->picture.hue = v;
-
-       DBG(5, "Got picture settings from the image sensor")
-
-       PDBGG("Brightness, contrast, hue, colour, whiteness are "
-             "%u,%u,%u,%u,%u", cam->picture.brightness,cam->picture.contrast,
-             cam->picture.hue, cam->picture.colour, cam->picture.whiteness)
-
-       return 0;
-}
-
-
-/*--------------------------------------------------------------------------
-  Update picture settings of the image sensor.
-  Returns: 0 on success, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int
-w9968cf_sensor_update_picture(struct w9968cf_device* cam,
-                             struct video_picture pict)
-{
-       int err = 0;
-
-       if ((!cam->sensor_initialized)
-           || pict.contrast != cam->picture.contrast) {
-               err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_CONT,
-                                                pict.contrast);
-               if (err)
-                       goto fail;
-               DBG(4, "Contrast changed from %u to %u",
-                   cam->picture.contrast, pict.contrast)
-               cam->picture.contrast = pict.contrast;
-       }
-
-       if (((!cam->sensor_initialized) ||
-           pict.brightness != cam->picture.brightness) && (!cam->auto_brt)) {
-               err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BRIGHT,
-                                                pict.brightness);
-               if (err)
-                       goto fail;
-               DBG(4, "Brightness changed from %u to %u",
-                   cam->picture.brightness, pict.brightness)
-               cam->picture.brightness = pict.brightness;
-       }
-
-       if ((!cam->sensor_initialized) || pict.colour != cam->picture.colour) {
-               err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_SAT,
-                                                pict.colour);
-               if (err)
-                       goto fail;
-               DBG(4, "Colour changed from %u to %u",
-                   cam->picture.colour, pict.colour)
-               cam->picture.colour = pict.colour;
-       }
-
-       if ((!cam->sensor_initialized) || pict.hue != cam->picture.hue) {
-               err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_HUE,
-                                                pict.hue);
-               if (err)
-                       goto fail;
-               DBG(4, "Hue changed from %u to %u",
-                   cam->picture.hue, pict.hue)
-               cam->picture.hue = pict.hue;
-       }
-
-       return 0;
-
-fail:
-       DBG(4, "Failed to change sensor picture setting")
-       return err;
-}
-
-
-
-/****************************************************************************
- * Camera configuration                                                     *
- ****************************************************************************/
-
-/*--------------------------------------------------------------------------
-  This function is called when a supported image sensor is detected.
-  Return 0 if the initialization succeeds, a negative number otherwise.
-  --------------------------------------------------------------------------*/
-static int w9968cf_sensor_init(struct w9968cf_device* cam)
-{
-       int err = 0;
-
-       if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_INITIALIZE,
-                                     &cam->monochrome)))
-               goto error;
-
-       if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_Q_SUBTYPE,
-                                     &cam->sensor)))
-               goto error;
-
-       /* NOTE: Make sure width and height are a multiple of 16 */
-       switch (v4l2_i2c_subdev_addr(cam->sensor_sd)) {
-               case OV6xx0_SID:
-                       cam->maxwidth = 352;
-                       cam->maxheight = 288;
-                       cam->minwidth = 64;
-                       cam->minheight = 48;
-                       break;
-               case OV7xx0_SID:
-                       cam->maxwidth = 640;
-                       cam->maxheight = 480;
-                       cam->minwidth = 64;
-                       cam->minheight = 48;
-                       break;
-               default:
-                       DBG(1, "Not supported image sensor detected for %s",
-                           symbolic(camlist, cam->id))
-                       return -EINVAL;
-       }
-
-       /* These values depend on the ones in the ovxxx0.c sources */
-       switch (cam->sensor) {
-               case CC_OV7620:
-                       cam->start_cropx = 287;
-                       cam->start_cropy = 35;
-                       /* Seems to work around a bug in the image sensor */
-                       cam->vs_polarity = 1;
-                       cam->hs_polarity = 1;
-                       break;
-               default:
-                       cam->start_cropx = 320;
-                       cam->start_cropy = 35;
-                       cam->vs_polarity = 1;
-                       cam->hs_polarity = 0;
-       }
-
-       if ((err = w9968cf_sensor_update_settings(cam)))
-               goto error;
-
-       if ((err = w9968cf_sensor_update_picture(cam, cam->picture)))
-               goto error;
-
-       cam->sensor_initialized = 1;
-
-       DBG(2, "%s image sensor initialized", symbolic(senlist, cam->sensor))
-       return 0;
-
-error:
-       cam->sensor_initialized = 0;
-       cam->sensor = CC_UNKNOWN;
-       DBG(1, "Image sensor initialization failed for %s (%s). "
-              "Try to detach and attach this device again",
-           symbolic(camlist, cam->id), video_device_node_name(cam->v4ldev))
-       return err;
-}
-
-
-/*--------------------------------------------------------------------------
-  Fill some basic fields in the main device data structure.
-  This function is called once on w9968cf_usb_probe() for each recognized
-  camera.
-  --------------------------------------------------------------------------*/
-static void
-w9968cf_configure_camera(struct w9968cf_device* cam,
-                        struct usb_device* udev,
-                        enum w9968cf_model_id mod_id,
-                        const unsigned short dev_nr)
-{
-       mutex_init(&cam->fileop_mutex);
-       init_waitqueue_head(&cam->open);
-       spin_lock_init(&cam->urb_lock);
-       spin_lock_init(&cam->flist_lock);
-
-       cam->users = 0;
-       cam->disconnected = 0;
-       cam->id = mod_id;
-       cam->sensor = CC_UNKNOWN;
-       cam->sensor_initialized = 0;
-
-       /* Calculate the alternate setting number (from 1 to 16)
-          according to the 'packet_size' module parameter */
-       if (packet_size[dev_nr] < W9968CF_MIN_PACKET_SIZE)
-               packet_size[dev_nr] = W9968CF_MIN_PACKET_SIZE;
-       for (cam->altsetting = 1;
-            packet_size[dev_nr] < wMaxPacketSize[cam->altsetting-1];
-            cam->altsetting++);
-
-       cam->max_buffers = (max_buffers[dev_nr] < 2 ||
-                           max_buffers[dev_nr] > W9968CF_MAX_BUFFERS)
-                          ? W9968CF_BUFFERS : (u8)max_buffers[dev_nr];
-
-       cam->double_buffer = (double_buffer[dev_nr] == 0 ||
-                             double_buffer[dev_nr] == 1)
-                            ? (u8)double_buffer[dev_nr]:W9968CF_DOUBLE_BUFFER;
-
-       cam->clamping = (clamping[dev_nr] == 0 || clamping[dev_nr] == 1)
-                       ? (u8)clamping[dev_nr] : W9968CF_CLAMPING;
-
-       cam->filter_type = (filter_type[dev_nr] == 0 ||
-                           filter_type[dev_nr] == 1 ||
-                           filter_type[dev_nr] == 2)
-                          ? (u8)filter_type[dev_nr] : W9968CF_FILTER_TYPE;
-
-       cam->capture = 1;
-
-       cam->largeview = (largeview[dev_nr] == 0 || largeview[dev_nr] == 1)
-                        ? (u8)largeview[dev_nr] : W9968CF_LARGEVIEW;
-
-       cam->decompression = (decompression[dev_nr] == 0 ||
-                             decompression[dev_nr] == 1 ||
-                             decompression[dev_nr] == 2)
-                            ? (u8)decompression[dev_nr]:W9968CF_DECOMPRESSION;
-
-       cam->upscaling = (upscaling[dev_nr] == 0 ||
-                         upscaling[dev_nr] == 1)
-                        ? (u8)upscaling[dev_nr] : W9968CF_UPSCALING;
-
-       cam->auto_brt = (autobright[dev_nr] == 0 || autobright[dev_nr] == 1)
-                       ? (u8)autobright[dev_nr] : W9968CF_AUTOBRIGHT;
-
-       cam->auto_exp = (autoexp[dev_nr] == 0 || autoexp[dev_nr] == 1)
-                       ? (u8)autoexp[dev_nr] : W9968CF_AUTOEXP;
-
-       cam->lightfreq = (lightfreq[dev_nr] == 50 || lightfreq[dev_nr] == 60)
-                        ? (u8)lightfreq[dev_nr] : W9968CF_LIGHTFREQ;
-
-       cam->bandfilt = (bandingfilter[dev_nr] == 0 ||
-                        bandingfilter[dev_nr] == 1)
-                       ? (u8)bandingfilter[dev_nr] : W9968CF_BANDINGFILTER;
-
-       cam->backlight = (backlight[dev_nr] == 0 || backlight[dev_nr] == 1)
-                        ? (u8)backlight[dev_nr] : W9968CF_BACKLIGHT;
-
-       cam->clockdiv = (clockdiv[dev_nr] == -1 || clockdiv[dev_nr] >= 0)
-                       ? (s8)clockdiv[dev_nr] : W9968CF_CLOCKDIV;
-
-       cam->mirror = (mirror[dev_nr] == 0 || mirror[dev_nr] == 1)
-                     ? (u8)mirror[dev_nr] : W9968CF_MIRROR;
-
-       cam->monochrome = (monochrome[dev_nr] == 0 || monochrome[dev_nr] == 1)
-                         ? monochrome[dev_nr] : W9968CF_MONOCHROME;
-
-       cam->picture.brightness = (u16)brightness[dev_nr];
-       cam->picture.hue = (u16)hue[dev_nr];
-       cam->picture.colour = (u16)colour[dev_nr];
-       cam->picture.contrast = (u16)contrast[dev_nr];
-       cam->picture.whiteness = (u16)whiteness[dev_nr];
-       if (w9968cf_valid_palette((u16)force_palette[dev_nr])) {
-               cam->picture.palette = (u16)force_palette[dev_nr];
-               cam->force_palette = 1;
-       } else {
-               cam->force_palette = 0;
-               if (cam->decompression == 0)
-                       cam->picture.palette = W9968CF_PALETTE_DECOMP_OFF;
-               else if (cam->decompression == 1)
-                       cam->picture.palette = W9968CF_PALETTE_DECOMP_FORCE;
-               else
-                       cam->picture.palette = W9968CF_PALETTE_DECOMP_ON;
-       }
-       cam->picture.depth = w9968cf_valid_depth(cam->picture.palette);
-
-       cam->force_rgb = (force_rgb[dev_nr] == 0 || force_rgb[dev_nr] == 1)
-                        ? (u8)force_rgb[dev_nr] : W9968CF_FORCE_RGB;
-
-       cam->window.x = 0;
-       cam->window.y = 0;
-       cam->window.width = W9968CF_WIDTH;
-       cam->window.height = W9968CF_HEIGHT;
-       cam->window.chromakey = 0;
-       cam->window.clipcount = 0;
-       cam->window.flags = 0;
-
-       DBG(3, "%s configured with settings #%u:",
-           symbolic(camlist, cam->id), dev_nr)
-
-       DBG(3, "- Data packet size for USB isochrnous transfer: %u bytes",
-           wMaxPacketSize[cam->altsetting-1])
-
-       DBG(3, "- Number of requested video frame buffers: %u",
-           cam->max_buffers)
-
-       if (cam->double_buffer)
-               DBG(3, "- Hardware double buffering enabled")
-       else
-               DBG(3, "- Hardware double buffering disabled")
-
-       if (cam->filter_type == 0)
-               DBG(3, "- Video filtering disabled")
-       else if (cam->filter_type == 1)
-               DBG(3, "- Video filtering enabled: type 1-2-1")
-       else if (cam->filter_type == 2)
-               DBG(3, "- Video filtering enabled: type 2-3-6-3-2")
-
-       if (cam->clamping)
-               DBG(3, "- Video data clamping (CCIR-601 format) enabled")
-       else
-               DBG(3, "- Video data clamping (CCIR-601 format) disabled")
-
-       if (cam->largeview)
-               DBG(3, "- Large view enabled")
-       else
-               DBG(3, "- Large view disabled")
-
-       if ((cam->decompression) == 0 && (!cam->force_palette))
-               DBG(3, "- Decompression disabled")
-       else if ((cam->decompression) == 1 && (!cam->force_palette))
-               DBG(3, "- Decompression forced")
-       else if ((cam->decompression) == 2 && (!cam->force_palette))
-               DBG(3, "- Decompression allowed")
-
-       if (cam->upscaling)
-               DBG(3, "- Software image scaling enabled")
-       else
-               DBG(3, "- Software image scaling disabled")
-
-       if (cam->force_palette)
-               DBG(3, "- Image palette forced to %s",
-                   symbolic(v4l1_plist, cam->picture.palette))
-
-       if (cam->force_rgb)
-               DBG(3, "- RGB component ordering will be used instead of BGR")
-
-       if (cam->auto_brt)
-               DBG(3, "- Auto brightness enabled")
-       else
-               DBG(3, "- Auto brightness disabled")
-
-       if (cam->auto_exp)
-               DBG(3, "- Auto exposure enabled")
-       else
-               DBG(3, "- Auto exposure disabled")
-
-       if (cam->backlight)
-               DBG(3, "- Backlight exposure algorithm enabled")
-       else
-               DBG(3, "- Backlight exposure algorithm disabled")
-
-       if (cam->mirror)
-               DBG(3, "- Mirror enabled")
-       else
-               DBG(3, "- Mirror disabled")
-
-       if (cam->bandfilt)
-               DBG(3, "- Banding filter enabled")
-       else
-               DBG(3, "- Banding filter disabled")
-
-       DBG(3, "- Power lighting frequency: %u", cam->lightfreq)
-
-       if (cam->clockdiv == -1)
-               DBG(3, "- Automatic clock divisor enabled")
-       else
-               DBG(3, "- Clock divisor: %d", cam->clockdiv)
-
-       if (cam->monochrome)
-               DBG(3, "- Image sensor used as monochrome")
-       else
-               DBG(3, "- Image sensor not used as monochrome")
-}
-
-
-/*--------------------------------------------------------------------------
-  If the video post-processing module is not loaded, some parameters
-  must be overridden.
-  --------------------------------------------------------------------------*/
-static void w9968cf_adjust_configuration(struct w9968cf_device* cam)
-{
-       if (!w9968cf_vpp) {
-               if (cam->decompression == 1) {
-                       cam->decompression = 2;
-                       DBG(2, "Video post-processing module not found: "
-                              "'decompression' parameter forced to 2")
-               }
-               if (cam->upscaling) {
-                       cam->upscaling = 0;
-                       DBG(2, "Video post-processing module not found: "
-                              "'upscaling' parameter forced to 0")
-               }
-               if (cam->picture.palette != VIDEO_PALETTE_UYVY) {
-                       cam->force_palette = 0;
-                       DBG(2, "Video post-processing module not found: "
-                              "'force_palette' parameter forced to 0")
-               }
-               cam->picture.palette = VIDEO_PALETTE_UYVY;
-               cam->picture.depth = w9968cf_valid_depth(cam->picture.palette);
-       }
-}
-
-
-/*--------------------------------------------------------------------------
-  Release the resources used by the driver.
-  This function is called on disconnect
-  (or on close if deallocation has been deferred)
-  --------------------------------------------------------------------------*/
-static void w9968cf_release_resources(struct w9968cf_device* cam)
-{
-       mutex_lock(&w9968cf_devlist_mutex);
-
-       DBG(2, "V4L device deregistered: %s",
-           video_device_node_name(cam->v4ldev))
-
-       video_unregister_device(cam->v4ldev);
-       list_del(&cam->v4llist);
-       i2c_del_adapter(&cam->i2c_adapter);
-       w9968cf_deallocate_memory(cam);
-       kfree(cam->control_buffer);
-       kfree(cam->data_buffer);
-       v4l2_device_unregister(&cam->v4l2_dev);
-
-       mutex_unlock(&w9968cf_devlist_mutex);
-}
-
-
-
-/****************************************************************************
- * Video4Linux interface                                                    *
- ****************************************************************************/
-
-static int w9968cf_open(struct file *filp)
-{
-       struct w9968cf_device* cam;
-       int err;
-
-       /* This the only safe way to prevent race conditions with disconnect */
-       if (!down_read_trylock(&w9968cf_disconnect))
-               return -EAGAIN;
-
-       cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));
-
-       mutex_lock(&cam->dev_mutex);
-
-       if (cam->sensor == CC_UNKNOWN) {
-               DBG(2, "No supported image sensor has been detected by the "
-                      "'ovcamchip' module for the %s (%s). Make sure "
-                      "it is loaded *before* (re)connecting the camera.",
-                   symbolic(camlist, cam->id),
-                   video_device_node_name(cam->v4ldev))
-               mutex_unlock(&cam->dev_mutex);
-               up_read(&w9968cf_disconnect);
-               return -ENODEV;
-       }
-
-       if (cam->users) {
-               DBG(2, "%s (%s) has been already occupied by '%s'",
-                   symbolic(camlist, cam->id),
-                   video_device_node_name(cam->v4ldev), cam->command)
-               if ((filp->f_flags & O_NONBLOCK)||(filp->f_flags & O_NDELAY)) {
-                       mutex_unlock(&cam->dev_mutex);
-                       up_read(&w9968cf_disconnect);
-                       return -EWOULDBLOCK;
-               }
-               mutex_unlock(&cam->dev_mutex);
-               err = wait_event_interruptible_exclusive(cam->open,
-                                                        cam->disconnected ||
-                                                        !cam->users);
-               if (err) {
-                       up_read(&w9968cf_disconnect);
-                       return err;
-               }
-               if (cam->disconnected) {
-                       up_read(&w9968cf_disconnect);
-                       return -ENODEV;
-               }
-               mutex_lock(&cam->dev_mutex);
-       }
-
-       DBG(5, "Opening '%s', %s ...",
-           symbolic(camlist, cam->id), video_device_node_name(cam->v4ldev))
-
-       cam->streaming = 0;
-       cam->misconfigured = 0;
-
-       w9968cf_adjust_configuration(cam);
-
-       if ((err = w9968cf_allocate_memory(cam)))
-               goto deallocate_memory;
-
-       if ((err = w9968cf_init_chip(cam)))
-               goto deallocate_memory;
-
-       if ((err = w9968cf_start_transfer(cam)))
-               goto deallocate_memory;
-
-       filp->private_data = cam;
-
-       cam->users++;
-       strcpy(cam->command, current->comm);
-
-       init_waitqueue_head(&cam->wait_queue);
-
-       DBG(5, "Video device is open")
-
-       mutex_unlock(&cam->dev_mutex);
-       up_read(&w9968cf_disconnect);
-
-       return 0;
-
-deallocate_memory:
-       w9968cf_deallocate_memory(cam);
-       DBG(2, "Failed to open the video device")
-       mutex_unlock(&cam->dev_mutex);
-       up_read(&w9968cf_disconnect);
-       return err;
-}
-
-
-static int w9968cf_release(struct file *filp)
-{
-       struct w9968cf_device* cam;
-
-       cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));
-
-       mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */
-
-       w9968cf_stop_transfer(cam);
-
-       if (cam->disconnected) {
-               w9968cf_release_resources(cam);
-               mutex_unlock(&cam->dev_mutex);
-               kfree(cam);
-               return 0;
-       }
-
-       cam->users--;
-       w9968cf_deallocate_memory(cam);
-       wake_up_interruptible_nr(&cam->open, 1);
-
-       DBG(5, "Video device closed")
-       mutex_unlock(&cam->dev_mutex);
-       return 0;
-}
-
-
-static ssize_t
-w9968cf_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
-{
-       struct w9968cf_device* cam;
-       struct w9968cf_frame_t* fr;
-       int err = 0;
-
-       cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));
-
-       if (filp->f_flags & O_NONBLOCK)
-               return -EWOULDBLOCK;
-
-       if (mutex_lock_interruptible(&cam->fileop_mutex))
-               return -ERESTARTSYS;
-
-       if (cam->disconnected) {
-               DBG(2, "Device not present")
-               mutex_unlock(&cam->fileop_mutex);
-               return -ENODEV;
-       }
-
-       if (cam->misconfigured) {
-               DBG(2, "The camera is misconfigured. Close and open it again.")
-               mutex_unlock(&cam->fileop_mutex);
-               return -EIO;
-       }
-
-       if (!cam->frame[0].queued)
-               w9968cf_push_frame(cam, 0);
-
-       if (!cam->frame[1].queued)
-               w9968cf_push_frame(cam, 1);
-
-       err = wait_event_interruptible(cam->wait_queue,
-                                      cam->frame[0].status == F_READY ||
-                                      cam->frame[1].status == F_READY ||
-                                      cam->disconnected);
-       if (err) {
-               mutex_unlock(&cam->fileop_mutex);
-               return err;
-       }
-       if (cam->disconnected) {
-               mutex_unlock(&cam->fileop_mutex);
-               return -ENODEV;
-       }
-
-       fr = (cam->frame[0].status == F_READY) ? &cam->frame[0]:&cam->frame[1];
-
-       if (w9968cf_vpp)
-               w9968cf_postprocess_frame(cam, fr);
-
-       if (count > fr->length)
-               count = fr->length;
-
-       if (copy_to_user(buf, fr->buffer, count)) {
-               fr->status = F_UNUSED;
-               mutex_unlock(&cam->fileop_mutex);
-               return -EFAULT;
-       }
-       *f_pos += count;
-
-       fr->status = F_UNUSED;
-
-       DBG(5, "%zu bytes read", count)
-
-       mutex_unlock(&cam->fileop_mutex);
-       return count;
-}
-
-
-static int w9968cf_mmap(struct file* filp, struct vm_area_struct *vma)
-{
-       struct w9968cf_device* cam = (struct w9968cf_device*)
-                                    video_get_drvdata(video_devdata(filp));
-       unsigned long vsize = vma->vm_end - vma->vm_start,
-                     psize = cam->nbuffers * cam->frame[0].size,
-                     start = vma->vm_start,
-                     pos = (unsigned long)cam->frame[0].buffer,
-                     page;
-
-       if (cam->disconnected) {
-               DBG(2, "Device not present")
-               return -ENODEV;
-       }
-
-       if (cam->misconfigured) {
-               DBG(2, "The camera is misconfigured. Close and open it again")
-               return -EIO;
-       }
-
-       PDBGG("mmapping %lu bytes...", vsize)
-
-       if (vsize > psize - (vma->vm_pgoff << PAGE_SHIFT))
-               return -EINVAL;
-
-       while (vsize > 0) {
-               page = vmalloc_to_pfn((void *)pos);
-               if (remap_pfn_range(vma, start, page + vma->vm_pgoff,
-                                               PAGE_SIZE, vma->vm_page_prot))
-                       return -EAGAIN;
-               start += PAGE_SIZE;
-               pos += PAGE_SIZE;
-               vsize -= PAGE_SIZE;
-       }
-
-       DBG(5, "mmap method successfully called")
-       return 0;
-}
-
-
-static long
-w9968cf_ioctl(struct file *filp,
-             unsigned int cmd, unsigned long arg)
-{
-       struct w9968cf_device* cam;
-       long err;
-
-       cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));
-
-       if (mutex_lock_interruptible(&cam->fileop_mutex))
-               return -ERESTARTSYS;
-
-       if (cam->disconnected) {
-               DBG(2, "Device not present")
-               mutex_unlock(&cam->fileop_mutex);
-               return -ENODEV;
-       }
-
-       if (cam->misconfigured) {
-               DBG(2, "The camera is misconfigured. Close and open it again.")
-               mutex_unlock(&cam->fileop_mutex);
-               return -EIO;
-       }
-
-       err = w9968cf_v4l_ioctl(filp, cmd, (void __user *)arg);
-
-       mutex_unlock(&cam->fileop_mutex);
-       return err;
-}
-
-
-static long w9968cf_v4l_ioctl(struct file *filp,
-                            unsigned int cmd, void __user *arg)
-{
-       struct w9968cf_device* cam;
-       const char* v4l1_ioctls[] = {
-               "?", "CGAP", "GCHAN", "SCHAN", "GTUNER", "STUNER",
-               "GPICT", "SPICT", "CCAPTURE", "GWIN", "SWIN", "GFBUF",
-               "SFBUF", "KEY", "GFREQ", "SFREQ", "GAUDIO", "SAUDIO",
-               "SYNC", "MCAPTURE", "GMBUF", "GUNIT", "GCAPTURE", "SCAPTURE",
-               "SPLAYMODE", "SWRITEMODE", "GPLAYINFO", "SMICROCODE",
-               "GVBIFMT", "SVBIFMT"
-       };
-
-       #define V4L1_IOCTL(cmd) \
-               ((_IOC_NR((cmd)) < ARRAY_SIZE(v4l1_ioctls)) ? \
-               v4l1_ioctls[_IOC_NR((cmd))] : "?")
-
-       cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp));
-
-       switch (cmd) {
-
-       case VIDIOCGCAP: /* get video capability */
-       {
-               struct video_capability cap = {
-                       .type = VID_TYPE_CAPTURE | VID_TYPE_SCALES,
-                       .channels = 1,
-                       .audios = 0,
-                       .minwidth = cam->minwidth,
-                       .minheight = cam->minheight,
-               };
-               sprintf(cap.name, "W996[87]CF USB Camera");
-               cap.maxwidth = (cam->upscaling && w9968cf_vpp)
-                              ? max((u16)W9968CF_MAX_WIDTH, cam->maxwidth)
-                                : cam->maxwidth;
-               cap.maxheight = (cam->upscaling && w9968cf_vpp)
-                               ? max((u16)W9968CF_MAX_HEIGHT, cam->maxheight)
-                                 : cam->maxheight;
-
-               if (copy_to_user(arg, &cap, sizeof(cap)))
-                       return -EFAULT;
-
-               DBG(5, "VIDIOCGCAP successfully called")
-               return 0;
-       }
-
-       case VIDIOCGCHAN: /* get video channel informations */
-       {
-               struct video_channel chan;
-               if (copy_from_user(&chan, arg, sizeof(chan)))
-                       return -EFAULT;
-
-               if (chan.channel != 0)
-                       return -EINVAL;
-
-               strcpy(chan.name, "Camera");
-               chan.tuners = 0;
-               chan.flags = 0;
-               chan.type = VIDEO_TYPE_CAMERA;
-               chan.norm = VIDEO_MODE_AUTO;
-
-               if (copy_to_user(arg, &chan, sizeof(chan)))
-                       return -EFAULT;
-
-               DBG(5, "VIDIOCGCHAN successfully called")
-               return 0;
-       }
-
-       case VIDIOCSCHAN: /* set active channel */
-       {
-               struct video_channel chan;
-
-               if (copy_from_user(&chan, arg, sizeof(chan)))
-                       return -EFAULT;
-
-               if (chan.channel != 0)
-                       return -EINVAL;
-
-               DBG(5, "VIDIOCSCHAN successfully called")
-               return 0;
-       }
-
-       case VIDIOCGPICT: /* get image properties of the picture */
-       {
-               if (w9968cf_sensor_get_picture(cam))
-                       return -EIO;
-
-               if (copy_to_user(arg, &cam->picture, sizeof(cam->picture)))
-                       return -EFAULT;
-
-               DBG(5, "VIDIOCGPICT successfully called")
-               return 0;
-       }
-
-       case VIDIOCSPICT: /* change picture settings */
-       {
-               struct video_picture pict;
-               int err = 0;
-
-               if (copy_from_user(&pict, arg, sizeof(pict)))
-                       return -EFAULT;
-
-               if ( (cam->force_palette || !w9968cf_vpp)
-                    && pict.palette != cam->picture.palette ) {
-                       DBG(4, "Palette %s rejected: only %s is allowed",
-                           symbolic(v4l1_plist, pict.palette),
-                           symbolic(v4l1_plist, cam->picture.palette))
-                       return -EINVAL;
-               }
-
-               if (!w9968cf_valid_palette(pict.palette)) {
-                       DBG(4, "Palette %s not supported. VIDIOCSPICT failed",
-                           symbolic(v4l1_plist, pict.palette))
-                       return -EINVAL;
-               }
-
-               if (!cam->force_palette) {
-                  if (cam->decompression == 0) {
-                     if (w9968cf_need_decompression(pict.palette)) {
-                        DBG(4, "Decompression disabled: palette %s is not "
-                               "allowed. VIDIOCSPICT failed",
-                            symbolic(v4l1_plist, pict.palette))
-                        return -EINVAL;
-                     }
-                  } else if (cam->decompression == 1) {
-                     if (!w9968cf_need_decompression(pict.palette)) {
-                        DBG(4, "Decompression forced: palette %s is not "
-                               "allowed. VIDIOCSPICT failed",
-                            symbolic(v4l1_plist, pict.palette))
-                        return -EINVAL;
-                     }
-                  }
-               }
-
-               if (pict.depth != w9968cf_valid_depth(pict.palette)) {
-                       DBG(4, "Requested depth %u bpp is not valid for %s "
-                              "palette: ignored and changed to %u bpp",
-                           pict.depth, symbolic(v4l1_plist, pict.palette),
-                           w9968cf_valid_depth(pict.palette))
-                       pict.depth = w9968cf_valid_depth(pict.palette);
-               }
-
-               if (pict.palette != cam->picture.palette) {
-                       if(*cam->requested_frame
-                          || cam->frame_current->queued) {
-                               err = wait_event_interruptible
-                                     ( cam->wait_queue,
-                                       cam->disconnected ||
-                                       (!*cam->requested_frame &&
-                                        !cam->frame_current->queued) );
-                               if (err)
-                                       return err;
-                               if (cam->disconnected)
-                                       return -ENODEV;
-                       }
-
-                       if (w9968cf_stop_transfer(cam))
-                               goto ioctl_fail;
-
-                       if (w9968cf_set_picture(cam, pict))
-                               goto ioctl_fail;
-
-                       if (w9968cf_start_transfer(cam))
-                               goto ioctl_fail;
-
-               } else if (w9968cf_sensor_update_picture(cam, pict))
-                       return -EIO;
-
-
-               DBG(5, "VIDIOCSPICT successfully called")
-               return 0;
-       }
-
-       case VIDIOCSWIN: /* set capture area */
-       {
-               struct video_window win;
-               int err = 0;
-
-               if (copy_from_user(&win, arg, sizeof(win)))
-                       return -EFAULT;
-
-               DBG(6, "VIDIOCSWIN called: clipcount=%d, flags=%u, "
-                      "x=%u, y=%u, %ux%u", win.clipcount, win.flags,
-                   win.x, win.y, win.width, win.height)
-
-               if (win.clipcount != 0 || win.flags != 0)
-                       return -EINVAL;
-
-               if ((err = w9968cf_adjust_window_size(cam, &win.width,
-                                                     &win.height))) {
-                       DBG(4, "Resolution not supported (%ux%u). "
-                              "VIDIOCSWIN failed", win.width, win.height)
-                       return err;
-               }
-
-               if (win.x != cam->window.x ||
-                   win.y != cam->window.y ||
-                   win.width != cam->window.width ||
-                   win.height != cam->window.height) {
-                       if(*cam->requested_frame
-                          || cam->frame_current->queued) {
-                               err = wait_event_interruptible
-                                     ( cam->wait_queue,
-                                       cam->disconnected ||
-                                       (!*cam->requested_frame &&
-                                        !cam->frame_current->queued) );
-                               if (err)
-                                       return err;
-                               if (cam->disconnected)
-                                       return -ENODEV;
-                       }
-
-                       if (w9968cf_stop_transfer(cam))
-                               goto ioctl_fail;
-
-                       /* This _must_ be called before set_window() */
-                       if (w9968cf_set_picture(cam, cam->picture))
-                               goto ioctl_fail;
-
-                       if (w9968cf_set_window(cam, win))
-                               goto ioctl_fail;
-
-                       if (w9968cf_start_transfer(cam))
-                               goto ioctl_fail;
-               }
-
-               DBG(5, "VIDIOCSWIN successfully called. ")
-               return 0;
-       }
-
-       case VIDIOCGWIN: /* get current window properties */
-       {
-               if (copy_to_user(arg,&cam->window,sizeof(struct video_window)))
-                       return -EFAULT;
-
-               DBG(5, "VIDIOCGWIN successfully called")
-               return 0;
-       }
-
-       case VIDIOCGMBUF: /* request for memory (mapped) buffer */
-       {
-               struct video_mbuf mbuf;
-               u8 i;
-
-               mbuf.size = cam->nbuffers * cam->frame[0].size;
-               mbuf.frames = cam->nbuffers;
-               for (i = 0; i < cam->nbuffers; i++)
-                       mbuf.offsets[i] = (unsigned long)cam->frame[i].buffer -
-                                         (unsigned long)cam->frame[0].buffer;
-
-               if (copy_to_user(arg, &mbuf, sizeof(mbuf)))
-                       return -EFAULT;
-
-               DBG(5, "VIDIOCGMBUF successfully called")
-               return 0;
-       }
-
-       case VIDIOCMCAPTURE: /* start the capture to a frame */
-       {
-               struct video_mmap mmap;
-               struct w9968cf_frame_t* fr;
-               u32 w, h;
-               int err = 0;
-
-               if (copy_from_user(&mmap, arg, sizeof(mmap)))
-                       return -EFAULT;
-
-               DBG(6, "VIDIOCMCAPTURE called: frame #%u, format=%s, %dx%d",
-                   mmap.frame, symbolic(v4l1_plist, mmap.format),
-                   mmap.width, mmap.height)
-
-               if (mmap.frame >= cam->nbuffers) {
-                       DBG(4, "Invalid frame number (%u). "
-                              "VIDIOCMCAPTURE failed", mmap.frame)
-                       return -EINVAL;
-               }
-
-               if (mmap.format!=cam->picture.palette &&
-                   (cam->force_palette || !w9968cf_vpp)) {
-                       DBG(4, "Palette %s rejected: only %s is allowed",
-                           symbolic(v4l1_plist, mmap.format),
-                           symbolic(v4l1_plist, cam->picture.palette))
-                       return -EINVAL;
-               }
-
-               if (!w9968cf_valid_palette(mmap.format)) {
-                       DBG(4, "Palette %s not supported. "
-                              "VIDIOCMCAPTURE failed",
-                           symbolic(v4l1_plist, mmap.format))
-                       return -EINVAL;
-               }
-
-               if (!cam->force_palette) {
-                  if (cam->decompression == 0) {
-                     if (w9968cf_need_decompression(mmap.format)) {
-                        DBG(4, "Decompression disabled: palette %s is not "
-                               "allowed. VIDIOCSPICT failed",
-                            symbolic(v4l1_plist, mmap.format))
-                        return -EINVAL;
-                     }
-                  } else if (cam->decompression == 1) {
-                     if (!w9968cf_need_decompression(mmap.format)) {
-                        DBG(4, "Decompression forced: palette %s is not "
-                               "allowed. VIDIOCSPICT failed",
-                            symbolic(v4l1_plist, mmap.format))
-                        return -EINVAL;
-                     }
-                  }
-               }
-
-               w = mmap.width; h = mmap.height;
-               err = w9968cf_adjust_window_size(cam, &w, &h);
-               mmap.width = w; mmap.height = h;
-               if (err) {
-                       DBG(4, "Resolution not supported (%dx%d). "
-                              "VIDIOCMCAPTURE failed",
-                           mmap.width, mmap.height)
-                       return err;
-               }
-
-               fr = &cam->frame[mmap.frame];
-
-               if (mmap.width  != cam->window.width ||
-                   mmap.height != cam->window.height ||
-                   mmap.format != cam->picture.palette) {
-
-                       struct video_window win;
-                       struct video_picture pict;
-
-                       if(*cam->requested_frame
-                          || cam->frame_current->queued) {
-                               DBG(6, "VIDIOCMCAPTURE. Change settings for "
-                                      "frame #%u: %dx%d, format %s. Wait...",
-                                   mmap.frame, mmap.width, mmap.height,
-                                   symbolic(v4l1_plist, mmap.format))
-                               err = wait_event_interruptible
-                                     ( cam->wait_queue,
-                                       cam->disconnected ||
-                                       (!*cam->requested_frame &&
-                                        !cam->frame_current->queued) );
-                               if (err)
-                                       return err;
-                               if (cam->disconnected)
-                                       return -ENODEV;
-                       }
-
-                       memcpy(&win, &cam->window, sizeof(win));
-                       memcpy(&pict, &cam->picture, sizeof(pict));
-                       win.width = mmap.width;
-                       win.height = mmap.height;
-                       pict.palette = mmap.format;
-
-                       if (w9968cf_stop_transfer(cam))
-                               goto ioctl_fail;
-
-                       /* This before set_window */
-                       if (w9968cf_set_picture(cam, pict))
-                               goto ioctl_fail;
-
-                       if (w9968cf_set_window(cam, win))
-                               goto ioctl_fail;
-
-                       if (w9968cf_start_transfer(cam))
-                               goto ioctl_fail;
-
-               } else  if (fr->queued) {
-
-                       DBG(6, "Wait until frame #%u is free", mmap.frame)
-
-                       err = wait_event_interruptible(cam->wait_queue,
-                                                      cam->disconnected ||
-                                                      (!fr->queued));
-                       if (err)
-                               return err;
-                       if (cam->disconnected)
-                               return -ENODEV;
-               }
-
-               w9968cf_push_frame(cam, mmap.frame);
-               DBG(5, "VIDIOCMCAPTURE(%u): successfully called", mmap.frame)
-               return 0;
-       }
-
-       case VIDIOCSYNC: /* wait until the capture of a frame is finished */
-       {
-               unsigned int f_num;
-               struct w9968cf_frame_t* fr;
-               int err = 0;
-
-               if (copy_from_user(&f_num, arg, sizeof(f_num)))
-                       return -EFAULT;
-
-               if (f_num >= cam->nbuffers) {
-                       DBG(4, "Invalid frame number (%u). "
-                              "VIDIOCMCAPTURE failed", f_num)
-                       return -EINVAL;
-               }
-
-               DBG(6, "VIDIOCSYNC called for frame #%u", f_num)
-
-               fr = &cam->frame[f_num];
-
-               switch (fr->status) {
-               case F_UNUSED:
-                       if (!fr->queued) {
-                               DBG(4, "VIDIOSYNC: Frame #%u not requested!",
-                                   f_num)
-                               return -EFAULT;
-                       }
-               case F_ERROR:
-               case F_GRABBING:
-                       err = wait_event_interruptible(cam->wait_queue,
-                                                      (fr->status == F_READY)
-                                                      || cam->disconnected);
-                       if (err)
-                               return err;
-                       if (cam->disconnected)
-                               return -ENODEV;
-                       break;
-               case F_READY:
-                       break;
-               }
-
-               if (w9968cf_vpp)
-                       w9968cf_postprocess_frame(cam, fr);
-
-               fr->status = F_UNUSED;
-
-               DBG(5, "VIDIOCSYNC(%u) successfully called", f_num)
-               return 0;
-       }
-
-       case VIDIOCGUNIT:/* report the unit numbers of the associated devices*/
-       {
-               struct video_unit unit = {
-                       .video = cam->v4ldev->minor,
-                       .vbi = VIDEO_NO_UNIT,
-                       .radio = VIDEO_NO_UNIT,
-                       .audio = VIDEO_NO_UNIT,
-                       .teletext = VIDEO_NO_UNIT,
-               };
-
-               if (copy_to_user(arg, &unit, sizeof(unit)))
-                       return -EFAULT;
-
-               DBG(5, "VIDIOCGUNIT successfully called")
-               return 0;
-       }
-
-       case VIDIOCKEY:
-               return 0;
-
-       case VIDIOCGFBUF:
-       {
-               if (clear_user(arg, sizeof(struct video_buffer)))
-                       return -EFAULT;
-
-               DBG(5, "VIDIOCGFBUF successfully called")
-               return 0;
-       }
-
-       case VIDIOCGTUNER:
-       {
-               struct video_tuner tuner;
-               if (copy_from_user(&tuner, arg, sizeof(tuner)))
-                       return -EFAULT;
-
-               if (tuner.tuner != 0)
-                       return -EINVAL;
-
-               strcpy(tuner.name, "no_tuner");
-               tuner.rangelow = 0;
-               tuner.rangehigh = 0;
-               tuner.flags = VIDEO_TUNER_NORM;
-               tuner.mode = VIDEO_MODE_AUTO;
-               tuner.signal = 0xffff;
-
-               if (copy_to_user(arg, &tuner, sizeof(tuner)))
-                       return -EFAULT;
-
-               DBG(5, "VIDIOCGTUNER successfully called")
-               return 0;
-       }
-
-       case VIDIOCSTUNER:
-       {
-               struct video_tuner tuner;
-               if (copy_from_user(&tuner, arg, sizeof(tuner)))
-                       return -EFAULT;
-
-               if (tuner.tuner != 0)
-                       return -EINVAL;
-
-               if (tuner.mode != VIDEO_MODE_AUTO)
-                       return -EINVAL;
-
-               DBG(5, "VIDIOCSTUNER successfully called")
-               return 0;
-       }
-
-       case VIDIOCSFBUF:
-       case VIDIOCCAPTURE:
-       case VIDIOCGFREQ:
-       case VIDIOCSFREQ:
-       case VIDIOCGAUDIO:
-       case VIDIOCSAUDIO:
-       case VIDIOCSPLAYMODE:
-       case VIDIOCSWRITEMODE:
-       case VIDIOCGPLAYINFO:
-       case VIDIOCSMICROCODE:
-       case VIDIOCGVBIFMT:
-       case VIDIOCSVBIFMT:
-               DBG(4, "Unsupported V4L1 IOCtl: VIDIOC%s "
-                      "(type 0x%01X, "
-                      "n. 0x%01X, "
-                      "dir. 0x%01X, "
-                      "size 0x%02X)",
-                   V4L1_IOCTL(cmd),
-                   _IOC_TYPE(cmd),_IOC_NR(cmd),_IOC_DIR(cmd),_IOC_SIZE(cmd))
-
-               return -EINVAL;
-
-       default:
-               DBG(4, "Invalid V4L1 IOCtl: VIDIOC%s "
-                      "type 0x%01X, "
-                      "n. 0x%01X, "
-                      "dir. 0x%01X, "
-                      "size 0x%02X",
-                   V4L1_IOCTL(cmd),
-                   _IOC_TYPE(cmd),_IOC_NR(cmd),_IOC_DIR(cmd),_IOC_SIZE(cmd))
-
-               return -ENOIOCTLCMD;
-
-       } /* end of switch */
-
-ioctl_fail:
-       cam->misconfigured = 1;
-       DBG(1, "VIDIOC%s failed because of hardware problems. "
-              "To use the camera, close and open it again.", V4L1_IOCTL(cmd))
-       return -EFAULT;
-}
-
-
-static const struct v4l2_file_operations w9968cf_fops = {
-       .owner =   THIS_MODULE,
-       .open =    w9968cf_open,
-       .release = w9968cf_release,
-       .read =    w9968cf_read,
-       .ioctl =   w9968cf_ioctl,
-       .mmap =    w9968cf_mmap,
-};
-
-
-
-/****************************************************************************
- * USB probe and V4L registration, disconnect and id_table[] definition     *
- ****************************************************************************/
-
-static int
-w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id)
-{
-       struct usb_device *udev = interface_to_usbdev(intf);
-       struct w9968cf_device* cam;
-       int err = 0;
-       enum w9968cf_model_id mod_id;
-       struct list_head* ptr;
-       u8 sc = 0; /* number of simultaneous cameras */
-       static unsigned short dev_nr; /* 0 - we are handling device number n */
-       static unsigned short addrs[] = {
-               OV7xx0_SID,
-               OV6xx0_SID,
-               I2C_CLIENT_END
-       };
-
-       if (le16_to_cpu(udev->descriptor.idVendor)  == winbond_id_table[0].idVendor &&
-           le16_to_cpu(udev->descriptor.idProduct) == winbond_id_table[0].idProduct)
-               mod_id = W9968CF_MOD_CLVBWGP; /* see camlist[] table */
-       else if (le16_to_cpu(udev->descriptor.idVendor)  == winbond_id_table[1].idVendor &&
-                le16_to_cpu(udev->descriptor.idProduct) == winbond_id_table[1].idProduct)
-               mod_id = W9968CF_MOD_GENERIC; /* see camlist[] table */
-       else
-               return -ENODEV;
-
-       cam = kzalloc(sizeof(struct w9968cf_device), GFP_KERNEL);
-       if (!cam)
-               return -ENOMEM;
-
-       err = v4l2_device_register(&intf->dev, &cam->v4l2_dev);
-       if (err)
-               goto fail0;
-
-       mutex_init(&cam->dev_mutex);
-       mutex_lock(&cam->dev_mutex);
-
-       cam->usbdev = udev;
-
-       DBG(2, "%s detected", symbolic(camlist, mod_id))
-
-       if (simcams > W9968CF_MAX_DEVICES)
-               simcams = W9968CF_SIMCAMS;
-
-       /* How many cameras are connected ? */
-       mutex_lock(&w9968cf_devlist_mutex);
-       list_for_each(ptr, &w9968cf_dev_list)
-               sc++;
-       mutex_unlock(&w9968cf_devlist_mutex);
-
-       if (sc >= simcams) {
-               DBG(2, "Device rejected: too many connected cameras "
-                      "(max. %u)", simcams)
-               err = -EPERM;
-               goto fail;
-       }
-
-
-       /* Allocate 2 bytes of memory for camera control USB transfers */
-       if (!(cam->control_buffer = kzalloc(2, GFP_KERNEL))) {
-               DBG(1,"Couldn't allocate memory for camera control transfers")
-               err = -ENOMEM;
-               goto fail;
-       }
-
-       /* Allocate 8 bytes of memory for USB data transfers to the FSB */
-       if (!(cam->data_buffer = kzalloc(8, GFP_KERNEL))) {
-               DBG(1, "Couldn't allocate memory for data "
-                      "transfers to the FSB")
-               err = -ENOMEM;
-               goto fail;
-       }
-
-       /* Register the V4L device */
-       cam->v4ldev = video_device_alloc();
-       if (!cam->v4ldev) {
-               DBG(1, "Could not allocate memory for a V4L structure")
-               err = -ENOMEM;
-               goto fail;
-       }
-
-       strcpy(cam->v4ldev->name, symbolic(camlist, mod_id));
-       cam->v4ldev->fops = &w9968cf_fops;
-       cam->v4ldev->release = video_device_release;
-       video_set_drvdata(cam->v4ldev, cam);
-       cam->v4ldev->v4l2_dev = &cam->v4l2_dev;
-
-       err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER,
-                                   video_nr[dev_nr]);
-       if (err) {
-               DBG(1, "V4L device registration failed")
-               if (err == -ENFILE && video_nr[dev_nr] == -1)
-                       DBG(2, "Couldn't find a free /dev/videoX node")
-               video_nr[dev_nr] = -1;
-               dev_nr = (dev_nr < W9968CF_MAX_DEVICES-1) ? dev_nr+1 : 0;
-               goto fail;
-       }
-
-       DBG(2, "V4L device registered as %s",
-           video_device_node_name(cam->v4ldev))
-
-       /* Set some basic constants */
-       w9968cf_configure_camera(cam, udev, mod_id, dev_nr);
-
-       /* Add a new entry into the list of V4L registered devices */
-       mutex_lock(&w9968cf_devlist_mutex);
-       list_add(&cam->v4llist, &w9968cf_dev_list);
-       mutex_unlock(&w9968cf_devlist_mutex);
-       dev_nr = (dev_nr < W9968CF_MAX_DEVICES-1) ? dev_nr+1 : 0;
-
-       w9968cf_turn_on_led(cam);
-
-       w9968cf_i2c_init(cam);
-       cam->sensor_sd = v4l2_i2c_new_subdev(&cam->v4l2_dev,
-                       &cam->i2c_adapter,
-                       "ovcamchip", "ovcamchip", 0, addrs);
-
-       usb_set_intfdata(intf, cam);
-       mutex_unlock(&cam->dev_mutex);
-
-       err = w9968cf_sensor_init(cam);
-       return 0;
-
-fail: /* Free unused memory */
-       kfree(cam->control_buffer);
-       kfree(cam->data_buffer);
-       if (cam->v4ldev)
-               video_device_release(cam->v4ldev);
-       mutex_unlock(&cam->dev_mutex);
-       v4l2_device_unregister(&cam->v4l2_dev);
-fail0:
-       kfree(cam);
-       return err;
-}
-
-
-static void w9968cf_usb_disconnect(struct usb_interface* intf)
-{
-       struct w9968cf_device* cam =
-          (struct w9968cf_device*)usb_get_intfdata(intf);
-
-       if (cam) {
-               down_write(&w9968cf_disconnect);
-               /* Prevent concurrent accesses to data */
-               mutex_lock(&cam->dev_mutex);
-
-               cam->disconnected = 1;
-
-               DBG(2, "Disconnecting %s...", symbolic(camlist, cam->id));
-
-               v4l2_device_disconnect(&cam->v4l2_dev);
-
-               wake_up_interruptible_all(&cam->open);
-
-               if (cam->users) {
-                       DBG(2, "The device is open (%s)! "
-                              "Process name: %s. Deregistration and memory "
-                              "deallocation are deferred on close.",
-                           video_device_node_name(cam->v4ldev), cam->command)
-                       cam->misconfigured = 1;
-                       w9968cf_stop_transfer(cam);
-                       wake_up_interruptible(&cam->wait_queue);
-               } else
-                       w9968cf_release_resources(cam);
-
-               mutex_unlock(&cam->dev_mutex);
-               up_write(&w9968cf_disconnect);
-
-               if (!cam->users) {
-                       kfree(cam);
-               }
-       }
-}
-
-
-static struct usb_driver w9968cf_usb_driver = {
-       .name =       "w9968cf",
-       .id_table =   winbond_id_table,
-       .probe =      w9968cf_usb_probe,
-       .disconnect = w9968cf_usb_disconnect,
-};
-
-
-
-/****************************************************************************
- * Module init, exit and intermodule communication                          *
- ****************************************************************************/
-
-static int __init w9968cf_module_init(void)
-{
-       int err;
-
-       KDBG(2, W9968CF_MODULE_NAME" "W9968CF_MODULE_VERSION)
-       KDBG(3, W9968CF_MODULE_AUTHOR)
-
-       if ((err = usb_register(&w9968cf_usb_driver)))
-               return err;
-
-       return 0;
-}
-
-
-static void __exit w9968cf_module_exit(void)
-{
-       /* w9968cf_usb_disconnect() will be called */
-       usb_deregister(&w9968cf_usb_driver);
-
-       KDBG(2, W9968CF_MODULE_NAME" deregistered")
-}
-
-
-module_init(w9968cf_module_init);
-module_exit(w9968cf_module_exit);
-
diff --git a/drivers/media/video/w9968cf.h b/drivers/media/video/w9968cf.h
deleted file mode 100644 (file)
index 73ad864..0000000
+++ /dev/null
@@ -1,333 +0,0 @@
-/***************************************************************************
- * Video4Linux driver for W996[87]CF JPEG USB Dual Mode Camera Chip.       *
- *                                                                         *
- * Copyright (C) 2002-2004 by Luca Risolia <luca.risolia@studio.unibo.it>  *
- *                                                                         *
- * This program is free software; you can redistribute it and/or modify    *
- * it under the terms of the GNU General Public License as published by    *
- * the Free Software Foundation; either version 2 of the License, or       *
- * (at your option) any later version.                                     *
- *                                                                         *
- * This program is distributed in the hope that it will be useful,         *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
- * GNU General Public License for more details.                            *
- *                                                                         *
- * You should have received a copy of the GNU General Public License       *
- * along with this program; if not, write to the Free Software             *
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
- ***************************************************************************/
-
-#ifndef _W9968CF_H_
-#define _W9968CF_H_
-
-#include <linux/videodev2.h>
-#include <linux/usb.h>
-#include <linux/i2c.h>
-#include <linux/device.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/wait.h>
-#include <linux/param.h>
-#include <linux/types.h>
-#include <linux/rwsem.h>
-#include <linux/mutex.h>
-
-#include <media/v4l2-device.h>
-#include <media/ovcamchip.h>
-
-#include "w9968cf_vpp.h"
-
-
-/****************************************************************************
- * Default values                                                           *
- ****************************************************************************/
-
-#define W9968CF_VPPMOD_LOAD     1  /* automatic 'w9968cf-vpp' module loading */
-
-/* Comment/uncomment the following line to enable/disable debugging messages */
-#define W9968CF_DEBUG
-
-/* These have effect only if W9968CF_DEBUG is defined */
-#define W9968CF_DEBUG_LEVEL    2 /* from 0 to 6. 0 for no debug informations */
-#define W9968CF_SPECIFIC_DEBUG 0 /* 0 or 1 */
-
-#define W9968CF_MAX_DEVICES    32
-#define W9968CF_SIMCAMS        W9968CF_MAX_DEVICES /* simultaneous cameras */
-
-#define W9968CF_MAX_BUFFERS   32
-#define W9968CF_BUFFERS       2 /* n. of frame buffers from 2 to MAX_BUFFERS */
-
-/* Maximum data payload sizes in bytes for alternate settings */
-static const u16 wMaxPacketSize[] = {1023, 959, 895, 831, 767, 703, 639, 575,
-                                     511, 447, 383, 319, 255, 191, 127,  63};
-#define W9968CF_PACKET_SIZE      1023 /* according to wMaxPacketSizes[] */
-#define W9968CF_MIN_PACKET_SIZE  63 /* minimum value */
-#define W9968CF_ISO_PACKETS      5 /* n.of packets for isochronous transfers */
-#define W9968CF_USB_CTRL_TIMEOUT 1000 /* timeout (ms) for usb control commands */
-#define W9968CF_URBS             2 /* n. of scheduled URBs for ISO transfer */
-
-#define W9968CF_I2C_BUS_DELAY    4 /* delay in us for I2C bit r/w operations */
-#define W9968CF_I2C_RW_RETRIES   15 /* number of max I2C r/w retries */
-
-/* Available video formats */
-struct w9968cf_format {
-       const u16 palette;
-       const u16 depth;
-       const u8 compression;
-};
-
-static const struct w9968cf_format w9968cf_formatlist[] = {
-       { VIDEO_PALETTE_UYVY,    16, 0 }, /* original video */
-       { VIDEO_PALETTE_YUV422P, 16, 1 }, /* with JPEG compression */
-       { VIDEO_PALETTE_YUV420P, 12, 1 }, /* with JPEG compression */
-       { VIDEO_PALETTE_YUV420,  12, 1 }, /* same as YUV420P */
-       { VIDEO_PALETTE_YUYV,    16, 0 }, /* software conversion */
-       { VIDEO_PALETTE_YUV422,  16, 0 }, /* software conversion */
-       { VIDEO_PALETTE_GREY,     8, 0 }, /* software conversion */
-       { VIDEO_PALETTE_RGB555,  16, 0 }, /* software conversion */
-       { VIDEO_PALETTE_RGB565,  16, 0 }, /* software conversion */
-       { VIDEO_PALETTE_RGB24,   24, 0 }, /* software conversion */
-       { VIDEO_PALETTE_RGB32,   32, 0 }, /* software conversion */
-       { 0,                      0, 0 }  /* 0 is a terminating entry */
-};
-
-#define W9968CF_DECOMPRESSION    2 /* decomp:0=disable,1=force,2=any formats */
-#define W9968CF_PALETTE_DECOMP_OFF   VIDEO_PALETTE_UYVY    /* when decomp=0 */
-#define W9968CF_PALETTE_DECOMP_FORCE VIDEO_PALETTE_YUV420P /* when decomp=1 */
-#define W9968CF_PALETTE_DECOMP_ON    VIDEO_PALETTE_UYVY    /* when decomp=2 */
-
-#define W9968CF_FORCE_RGB        0  /* read RGB instead of BGR, yes=1/no=0 */
-
-#define W9968CF_MAX_WIDTH      800 /* Has effect if up-scaling is on */
-#define W9968CF_MAX_HEIGHT     600 /* Has effect if up-scaling is on */
-#define W9968CF_WIDTH          320 /* from 128 to 352, multiple of 16 */
-#define W9968CF_HEIGHT         240 /* from  96 to 288, multiple of 16 */
-
-#define W9968CF_CLAMPING       0 /* 0 disable, 1 enable video data clamping */
-#define W9968CF_FILTER_TYPE    0 /* 0 disable  1 (1-2-1), 2 (2-3-6-3-2) */
-#define W9968CF_DOUBLE_BUFFER  1 /* 0 disable, 1 enable double buffer */
-#define W9968CF_LARGEVIEW      1 /* 0 disable, 1 enable */
-#define W9968CF_UPSCALING      0 /* 0 disable, 1 enable */
-
-#define W9968CF_MONOCHROME     0 /* 0 not monochrome, 1 monochrome sensor */
-#define W9968CF_BRIGHTNESS     31000 /* from 0 to 65535 */
-#define W9968CF_HUE            32768 /* from 0 to 65535 */
-#define W9968CF_COLOUR         32768 /* from 0 to 65535 */
-#define W9968CF_CONTRAST       50000 /* from 0 to 65535 */
-#define W9968CF_WHITENESS      32768 /* from 0 to 65535 */
-
-#define W9968CF_AUTOBRIGHT     0 /* 0 disable, 1 enable automatic brightness */
-#define W9968CF_AUTOEXP        1 /* 0 disable, 1 enable automatic exposure */
-#define W9968CF_LIGHTFREQ      50 /* light frequency. 50Hz (Europe) or 60Hz */
-#define W9968CF_BANDINGFILTER  0 /* 0 disable, 1 enable banding filter */
-#define W9968CF_BACKLIGHT      0 /* 0 or 1, 1=object is lit from behind */
-#define W9968CF_MIRROR         0 /* 0 or 1 [don't] reverse image horizontally*/
-
-#define W9968CF_CLOCKDIV         -1 /* -1 = automatic clock divisor */
-#define W9968CF_DEF_CLOCKDIVISOR  0 /* default sensor clock divisor value */
-
-
-/****************************************************************************
- * Globals                                                                  *
- ****************************************************************************/
-
-#define W9968CF_MODULE_NAME     "V4L driver for W996[87]CF JPEG USB " \
-                               "Dual Mode Camera Chip"
-#define W9968CF_MODULE_VERSION  "1:1.34-basic"
-#define W9968CF_MODULE_AUTHOR   "(C) 2002-2004 Luca Risolia"
-#define W9968CF_AUTHOR_EMAIL    "<luca.risolia@studio.unibo.it>"
-#define W9968CF_MODULE_LICENSE  "GPL"
-
-static const struct usb_device_id winbond_id_table[] = {
-       {
-               /* Creative Labs Video Blaster WebCam Go Plus */
-               USB_DEVICE(0x041e, 0x4003),
-               .driver_info = (unsigned long)"w9968cf",
-       },
-       {
-               /* Generic W996[87]CF JPEG USB Dual Mode Camera */
-               USB_DEVICE(0x1046, 0x9967),
-               .driver_info = (unsigned long)"w9968cf",
-       },
-       { } /* terminating entry */
-};
-
-/* W996[87]CF camera models, internal ids: */
-enum w9968cf_model_id {
-       W9968CF_MOD_GENERIC = 1, /* Generic W996[87]CF based device */
-       W9968CF_MOD_CLVBWGP = 11,/*Creative Labs Video Blaster WebCam Go Plus*/
-       W9968CF_MOD_ADPVDMA = 21, /* Aroma Digi Pen VGA Dual Mode ADG-5000 */
-       W9986CF_MOD_AAU = 31,     /* AVerMedia AVerTV USB */
-       W9968CF_MOD_CLVBWG = 34,  /* Creative Labs Video Blaster WebCam Go */
-       W9968CF_MOD_LL = 37,      /* Lebon LDC-035A */
-       W9968CF_MOD_EEEMC = 40,   /* Ezonics EZ-802 EZMega Cam */
-       W9968CF_MOD_OOE = 42,     /* OmniVision OV8610-EDE */
-       W9968CF_MOD_ODPVDMPC = 43,/* OPCOM Digi Pen VGA Dual Mode Pen Camera */
-       W9968CF_MOD_PDPII = 46,   /* Pretec Digi Pen-II */
-       W9968CF_MOD_PDP480 = 49,  /* Pretec DigiPen-480 */
-};
-
-enum w9968cf_frame_status {
-       F_READY,            /* finished grabbing & ready to be read/synced */
-       F_GRABBING,         /* in the process of being grabbed into */
-       F_ERROR,            /* something bad happened while processing */
-       F_UNUSED            /* unused (no VIDIOCMCAPTURE) */
-};
-
-struct w9968cf_frame_t {
-       void* buffer;
-       unsigned long size;
-       u32 length;
-       int number;
-       enum w9968cf_frame_status status;
-       struct w9968cf_frame_t* next;
-       u8 queued;
-};
-
-enum w9968cf_vpp_flag {
-       VPP_NONE = 0x00,
-       VPP_UPSCALE = 0x01,
-       VPP_SWAP_YUV_BYTES = 0x02,
-       VPP_DECOMPRESSION = 0x04,
-       VPP_UYVY_TO_RGBX = 0x08,
-};
-
-/* Main device driver structure */
-struct w9968cf_device {
-       enum w9968cf_model_id id;   /* private device identifier */
-
-       struct v4l2_device v4l2_dev;
-       struct video_device* v4ldev; /* -> V4L structure */
-       struct list_head v4llist;    /* entry of the list of V4L cameras */
-
-       struct usb_device* usbdev;           /* -> main USB structure */
-       struct urb* urb[W9968CF_URBS];       /* -> USB request block structs */
-       void* transfer_buffer[W9968CF_URBS]; /* -> ISO transfer buffers */
-       u16* control_buffer;                 /* -> buffer for control req.*/
-       u16* data_buffer;                    /* -> data to send to the FSB */
-
-       struct w9968cf_frame_t frame[W9968CF_MAX_BUFFERS];
-       struct w9968cf_frame_t frame_tmp; /* temporary frame */
-       struct w9968cf_frame_t frame_vpp; /* helper frame.*/
-       struct w9968cf_frame_t* frame_current; /* -> frame being grabbed */
-       struct w9968cf_frame_t* requested_frame[W9968CF_MAX_BUFFERS];
-
-       u8 max_buffers,   /* number of requested buffers */
-          force_palette, /* yes=1/no=0 */
-          force_rgb,     /* read RGB instead of BGR, yes=1, no=0 */
-          double_buffer, /* hardware double buffering yes=1/no=0 */
-          clamping,      /* video data clamping yes=1/no=0 */
-          filter_type,   /* 0=disabled, 1=3 tap, 2=5 tap filter */
-          capture,       /* 0=disabled, 1=enabled */
-          largeview,     /* 0=disabled, 1=enabled */
-          decompression, /* 0=disabled, 1=forced, 2=allowed */
-          upscaling;     /* software image scaling, 0=enabled, 1=disabled */
-
-       struct video_picture picture; /* current picture settings */
-       struct video_window window;   /* current window settings */
-
-       u16 hw_depth,    /* depth (used by the chip) */
-           hw_palette,  /* palette (used by the chip) */
-           hw_width,    /* width (used by the chip) */
-           hw_height,   /* height (used by the chip) */
-           hs_polarity, /* 0=negative sync pulse, 1=positive sync pulse */
-           vs_polarity, /* 0=negative sync pulse, 1=positive sync pulse */
-           start_cropx, /* pixels from HS inactive edge to 1st cropped pixel*/
-           start_cropy; /* pixels from VS inactive edge to 1st cropped pixel*/
-
-       enum w9968cf_vpp_flag vpp_flag; /* post-processing routines in use */
-
-       u8 nbuffers,      /* number of allocated frame buffers */
-          altsetting,    /* camera alternate setting */
-          disconnected,  /* flag: yes=1, no=0 */
-          misconfigured, /* flag: yes=1, no=0 */
-          users,         /* flag: number of users holding the device */
-          streaming;     /* flag: yes=1, no=0 */
-
-       u8 sensor_initialized; /* flag: yes=1, no=0 */
-
-       /* Determined by the image sensor type: */
-       int sensor,       /* type of image sensor chip (CC_*) */
-           monochrome;   /* image sensor is (probably) monochrome */
-       u16 maxwidth,     /* maximum width supported by the image sensor */
-           maxheight,    /* maximum height supported by the image sensor */
-           minwidth,     /* minimum width supported by the image sensor */
-           minheight;    /* minimum height supported by the image sensor */
-       u8  auto_brt,     /* auto brightness enabled flag */
-           auto_exp,     /* auto exposure enabled flag */
-           backlight,    /* backlight exposure algorithm flag */
-           mirror,       /* image is reversed horizontally */
-           lightfreq,    /* power (lighting) frequency */
-           bandfilt;     /* banding filter enabled flag */
-       s8  clockdiv;     /* clock divisor */
-
-       /* I2C interface to kernel */
-       struct i2c_adapter i2c_adapter;
-       struct v4l2_subdev *sensor_sd;
-
-       /* Locks */
-       struct mutex dev_mutex,    /* for probe, disconnect,open and close */
-                        fileop_mutex; /* for read and ioctl */
-       spinlock_t urb_lock,   /* for submit_urb() and unlink_urb() */
-                  flist_lock; /* for requested frame list accesses */
-       wait_queue_head_t open, wait_queue;
-
-       char command[16]; /* name of the program holding the device */
-};
-
-static inline struct w9968cf_device *to_cam(struct v4l2_device *v4l2_dev)
-{
-       return container_of(v4l2_dev, struct w9968cf_device, v4l2_dev);
-}
-
-
-/****************************************************************************
- * Macros for debugging                                                     *
- ****************************************************************************/
-
-#undef DBG
-#undef KDBG
-#ifdef W9968CF_DEBUG
-/* For device specific debugging messages */
-#      define DBG(level, fmt, args...)                                       \
-{                                                                             \
-       if ( ((specific_debug) && (debug == (level))) ||                      \
-            ((!specific_debug) && (debug >= (level))) ) {                    \
-               if ((level) == 1)                                             \
-                       v4l2_err(&cam->v4l2_dev, fmt "\n", ## args);          \
-               else if ((level) == 2 || (level) == 3)                        \
-                       v4l2_info(&cam->v4l2_dev, fmt "\n", ## args);         \
-               else if ((level) == 4)                                        \
-                       v4l2_warn(&cam->v4l2_dev, fmt "\n", ## args);         \
-               else if ((level) >= 5)                                        \
-                       v4l2_info(&cam->v4l2_dev, "[%s:%d] " fmt "\n",        \
-                                __func__, __LINE__ , ## args);               \
-       }                                                                     \
-}
-/* For generic kernel (not device specific) messages */
-#      define KDBG(level, fmt, args...)                                      \
-{                                                                             \
-       if ( ((specific_debug) && (debug == (level))) ||                      \
-            ((!specific_debug) && (debug >= (level))) ) {                    \
-               if ((level) >= 1 && (level) <= 4)                             \
-                       pr_info("w9968cf: " fmt "\n", ## args);               \
-               else if ((level) >= 5)                                        \
-                       pr_debug("w9968cf: [%s:%d] " fmt "\n", __func__,  \
-                                __LINE__ , ## args);                         \
-       }                                                                     \
-}
-#else
-       /* Not debugging: nothing */
-#      define DBG(level, fmt, args...) do {;} while(0);
-#      define KDBG(level, fmt, args...) do {;} while(0);
-#endif
-
-#undef PDBG
-#define PDBG(fmt, args...)                                                    \
-v4l2_info(&cam->v4l2_dev, "[%s:%d] " fmt "\n", __func__, __LINE__ , ## args);
-
-#undef PDBGG
-#define PDBGG(fmt, args...) do {;} while(0); /* nothing: it's a placeholder */
-
-#endif /* _W9968CF_H_ */
diff --git a/drivers/media/video/w9968cf_decoder.h b/drivers/media/video/w9968cf_decoder.h
deleted file mode 100644 (file)
index 59decbf..0000000
+++ /dev/null
@@ -1,86 +0,0 @@
-/***************************************************************************
- * Video decoder for the W996[87]CF driver for Linux.                      *
- *                                                                         *
- * Copyright (C) 2003 2004 by Luca Risolia <luca.risolia@studio.unibo.it>  *
- *                                                                         *
- * This program is free software; you can redistribute it and/or modify    *
- * it under the terms of the GNU General Public License as published by    *
- * the Free Software Foundation; either version 2 of the License, or       *
- * (at your option) any later version.                                     *
- *                                                                         *
- * This program is distributed in the hope that it will be useful,         *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
- * GNU General Public License for more details.                            *
- *                                                                         *
- * You should have received a copy of the GNU General Public License       *
- * along with this program; if not, write to the Free Software             *
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
- ***************************************************************************/
-
-#ifndef _W9968CF_DECODER_H_
-#define _W9968CF_DECODER_H_
-
-/* Comment/uncomment this for high/low quality of compressed video */
-#define W9968CF_DEC_FAST_LOWQUALITY_VIDEO
-
-#ifdef W9968CF_DEC_FAST_LOWQUALITY_VIDEO
-static const unsigned char Y_QUANTABLE[64] = {
-       16,  11,  10,  16,  24,  40,  51,  61,
-       12,  12,  14,  19,  26,  58,  60,  55,
-       14,  13,  16,  24,  40,  57,  69,  56,
-       14,  17,  22,  29,  51,  87,  80,  62,
-       18,  22,  37,  56,  68, 109, 103,  77,
-       24,  35,  55,  64,  81, 104, 113,  92,
-       49,  64,  78,  87, 103, 121, 120, 101,
-       72,  92,  95,  98, 112, 100, 103,  99
-};
-
-static const unsigned char UV_QUANTABLE[64] = {
-       17,  18,  24,  47,  99,  99,  99,  99,
-       18,  21,  26,  66,  99,  99,  99,  99,
-       24,  26,  56,  99,  99,  99,  99,  99,
-       47,  66,  99,  99,  99,  99,  99,  99,
-       99,  99,  99,  99,  99,  99,  99,  99,
-       99,  99,  99,  99,  99,  99,  99,  99,
-       99,  99,  99,  99,  99,  99,  99,  99,
-       99,  99,  99,  99,  99,  99,  99,  99
-};
-#else
-static const unsigned char Y_QUANTABLE[64] = {
-        8,   5,   5,   8,  12,  20,  25,  30,
-        6,   6,   7,   9,  13,  29,  30,  27,
-        7,   6,   8,  12,  20,  28,  34,  28,
-        7,   8,  11,  14,  25,  43,  40,  31,
-        9,  11,  18,  28,  34,  54,  51,  38,
-       12,  17,  27,  32,  40,  52,  56,  46,
-       24,  32,  39,  43,  51,  60,  60,  50,
-       36,  46,  47,  49,  56,  50,  51,  49
-};
-
-static const unsigned char UV_QUANTABLE[64] = {
-        8,   9,  12,  23,  49,  49,  49,  49,
-        9,  10,  13,  33,  49,  49,  49,  49,
-       12,  13,  28,  49,  49,  49,  49,  49,
-       23,  33,  49,  49,  49,  49,  49,  49,
-       49,  49,  49,  49,  49,  49,  49,  49,
-       49,  49,  49,  49,  49,  49,  49,  49,
-       49,  49,  49,  49,  49,  49,  49,  49,
-       49,  49,  49,  49,  49,  49,  49,  49
-};
-#endif
-
-#define W9968CF_DEC_ERR_CORRUPTED_DATA  -1
-#define W9968CF_DEC_ERR_BUF_OVERFLOW    -2
-#define W9968CF_DEC_ERR_NO_SOI          -3
-#define W9968CF_DEC_ERR_NO_SOF0         -4
-#define W9968CF_DEC_ERR_NO_SOS          -5
-#define W9968CF_DEC_ERR_NO_EOI          -6
-
-extern void w9968cf_init_decoder(void);
-extern int w9968cf_check_headers(const unsigned char* Pin,
-                                const unsigned long BUF_SIZE);
-extern int w9968cf_decode(const char* Pin, const unsigned long BUF_SIZE,
-                         const unsigned W, const unsigned H, char* Pout);
-
-#endif /* _W9968CF_DECODER_H_ */
diff --git a/drivers/media/video/w9968cf_vpp.h b/drivers/media/video/w9968cf_vpp.h
deleted file mode 100644 (file)
index 88c9b6c..0000000
+++ /dev/null
@@ -1,40 +0,0 @@
-/***************************************************************************
- * Interface for video post-processing functions for the W996[87]CF driver *
- * for Linux.                                                              *
- *                                                                         *
- * Copyright (C) 2002-2004 by Luca Risolia <luca.risolia@studio.unibo.it>  *
- *                                                                         *
- * This program is free software; you can redistribute it and/or modify    *
- * it under the terms of the GNU General Public License as published by    *
- * the Free Software Foundation; either version 2 of the License, or       *
- * (at your option) any later version.                                     *
- *                                                                         *
- * This program is distributed in the hope that it will be useful,         *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
- * GNU General Public License for more details.                            *
- *                                                                         *
- * You should have received a copy of the GNU General Public License       *
- * along with this program; if not, write to the Free Software             *
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
- ***************************************************************************/
-
-#ifndef _W9968CF_VPP_H_
-#define _W9968CF_VPP_H_
-
-#include <linux/module.h>
-#include <asm/types.h>
-
-struct w9968cf_vpp_t {
-       struct module* owner;
-       int (*check_headers)(const unsigned char*, const unsigned long);
-       int (*decode)(const char*, const unsigned long, const unsigned,
-                     const unsigned, char*);
-       void (*swap_yuvbytes)(void*, unsigned long);
-       void (*uyvy_to_rgbx)(u8*, unsigned long, u8*, u16, u8);
-       void (*scale_up)(u8*, u8*, u16, u16, u16, u16, u16);
-
-       u8 busy; /* read-only flag: module is/is not in use */
-};
-
-#endif /* _W9968CF_VPP_H_ */