V4L/DVB (3599a): Move drivers/usb/media to drivers/media/video

Because of historic reasons, there are two separate directories with
V4L stuff. Most drivers are located at driver/media/video. However, some
code for USB Webcams were inserted under drivers/usb/media.

This makes difficult for module authors to know were things should be.
Also, makes Kconfig menu confusing for normal users.

This patch moves all V4L content under drivers/usb/media to
drivers/media/video, and fixes Kconfig/Makefile entries.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

14 files changed, 5699 insertions, 0 deletions

diff --git a/drivers/media/video/pwc/Makefile b/drivers/media/video/pwc/Makefile
new file mode 100644
index 000000000000..2d93a775011a
--- /dev/null
+++ b/drivers/media/video/pwc/Makefile
@@ -0,0 +1,20 @@
+ifneq ($(KERNELRELEASE),)
+
+pwc-objs	:= pwc-if.o pwc-misc.o pwc-ctrl.o pwc-uncompress.o pwc-timon.o pwc-kiara.o
+
+obj-$(CONFIG_USB_PWC) += pwc.o
+
+else
+
+KDIR := /lib/modules/$(shell uname -r)/build
+PWD := $(shell pwd)
+
+default:
+	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
+
+endif
+
+clean:
+	rm -f *.[oas] .*.flags *.ko .*.cmd .*.d .*.tmp *.mod.c 
+	rm -rf .tmp_versions
+
diff --git a/drivers/media/video/pwc/philips.txt b/drivers/media/video/pwc/philips.txt
new file mode 100644
index 000000000000..04a640d723ed
--- /dev/null
+++ b/drivers/media/video/pwc/philips.txt
@@ -0,0 +1,236 @@
+This file contains some additional information for the Philips and OEM webcams.
+E-mail: webcam@smcc.demon.nl                        Last updated: 2004-01-19
+Site: http://www.smcc.demon.nl/webcam/
+
+As of this moment, the following cameras are supported:
+ * Philips PCA645
+ * Philips PCA646
+ * Philips PCVC675
+ * Philips PCVC680
+ * Philips PCVC690
+ * Philips PCVC720/40
+ * Philips PCVC730
+ * Philips PCVC740
+ * Philips PCVC750
+ * Askey VC010
+ * Creative Labs Webcam 5
+ * Creative Labs Webcam Pro Ex
+ * Logitech QuickCam 3000 Pro
+ * Logitech QuickCam 4000 Pro
+ * Logitech QuickCam Notebook Pro
+ * Logitech QuickCam Zoom
+ * Logitech QuickCam Orbit
+ * Logitech QuickCam Sphere
+ * Samsung MPC-C10
+ * Samsung MPC-C30
+ * Sotec Afina Eye
+ * AME CU-001
+ * Visionite VCS-UM100
+ * Visionite VCS-UC300
+
+The main webpage for the Philips driver is at the address above. It contains
+a lot of extra information, a FAQ, and the binary plugin 'PWCX'. This plugin
+contains decompression routines that allow you to use higher image sizes and
+framerates; in addition the webcam uses less bandwidth on the USB bus (handy
+if you want to run more than 1 camera simultaneously). These routines fall
+under a NDA, and may therefor not be distributed as source; however, its use
+is completely optional.
+
+You can build this code either into your kernel, or as a module. I recommend
+the latter, since it makes troubleshooting a lot easier. The built-in
+microphone is supported through the USB Audio class.
+
+When you load the module you can set some default settings for the
+camera; some programs depend on a particular image-size or -format and
+don't know how to set it properly in the driver. The options are:
+
+size
+   Can be one of 'sqcif', 'qsif', 'qcif', 'sif', 'cif' or
+   'vga', for an image size of resp. 128x96, 160x120, 176x144,
+   320x240, 352x288 and 640x480 (of course, only for those cameras that 
+   support these resolutions).
+
+fps
+   Specifies the desired framerate. Is an integer in the range of 4-30.
+
+fbufs
+   This paramter specifies the number of internal buffers to use for storing 
+   frames from the cam. This will help if the process that reads images from 
+   the cam is a bit slow or momentarely busy. However, on slow machines it 
+   only introduces lag, so choose carefully. The default is 3, which is 
+   reasonable. You can set it between 2 and 5.
+
+mbufs
+   This is an integer between 1 and 10. It will tell the module the number of
+   buffers to reserve for mmap(), VIDIOCCGMBUF, VIDIOCMCAPTURE and friends.
+   The default is 2, which is adequate for most applications (double
+   buffering).
+      
+   Should you experience a lot of 'Dumping frame...' messages during
+   grabbing with a tool that uses mmap(), you might want to increase if. 
+   However, it doesn't really buffer images, it just gives you a bit more
+   slack when your program is behind. But you need a multi-threaded or
+   forked program to really take advantage of these buffers.
+
+   The absolute maximum is 10, but don't set it too high!  Every buffer takes
+   up 460 KB of RAM, so unless you have a lot of memory setting this to
+   something more than 4 is an absolute waste.  This memory is only
+   allocated during open(), so nothing is wasted when the camera is not in
+   use.
+
+power_save
+   When power_save is enabled (set to 1), the module will try to shut down
+   the cam on close() and re-activate on open(). This will save power and
+   turn off the LED. Not all cameras support this though (the 645 and 646
+   don't have power saving at all), and some models don't work either (they
+   will shut down, but never wake up). Consider this experimental. By
+   default this option is disabled.
+
+compression (only useful with the plugin)
+   With this option you can control the compression factor that the camera
+   uses to squeeze the image through the USB bus. You can set the 
+   parameter between 0 and 3:
+     0 = prefer uncompressed images; if the requested mode is not available
+         in an uncompressed format, the driver will silently switch to low
+         compression.
+     1 = low compression.
+     2 = medium compression.
+     3 = high compression.
+      
+   High compression takes less bandwidth of course, but it could also
+   introduce some unwanted artefacts. The default is 2, medium compression.
+   See the FAQ on the website for an overview of which modes require
+   compression.
+
+   The compression parameter does not apply to the 645 and 646 cameras
+   and OEM models derived from those (only a few). Most cams honour this
+   parameter.
+
+leds
+   This settings takes 2 integers, that define the on/off time for the LED
+   (in milliseconds). One of the interesting things that you can do with
+   this is let the LED blink while the camera is in use. This:
+
+     leds=500,500
+      
+   will blink the LED once every second. But with:
+
+     leds=0,0
+
+   the LED never goes on, making it suitable for silent surveillance.
+
+   By default the camera's LED is on solid while in use, and turned off
+   when the camera is not used anymore.
+
+   This parameter works only with the ToUCam range of cameras (720, 730, 740,
+   750) and OEMs. For other cameras this command is silently ignored, and 
+   the LED cannot be controlled.
+
+   Finally: this parameters does not take effect UNTIL the first time you
+   open the camera device. Until then, the LED remains on.
+
+dev_hint
+   A long standing problem with USB devices is their dynamic nature: you
+   never know what device a camera gets assigned; it depends on module load
+   order, the hub configuration, the order in which devices are plugged in,
+   and the phase of the moon (i.e. it can be random). With this option you
+   can give the driver a hint as to what video device node (/dev/videoX) it
+   should use with a specific camera. This is also handy if you have two
+   cameras of the same model.
+
+   A camera is specified by its type (the number from the camera model,
+   like PCA645, PCVC750VC, etc) and optionally the serial number (visible
+   in /proc/bus/usb/devices). A hint consists of a string with the following
+   format:
+
+      [type[.serialnumber]:]node
+      
+   The square brackets mean that both the type and the serialnumber are
+   optional, but a serialnumber cannot be specified without a type (which
+   would be rather pointless). The serialnumber is separated from the type
+   by a '.'; the node number by a ':'.
+   
+   This somewhat cryptic syntax is best explained by a few examples:
+
+     dev_hint=3,5              The first detected cam gets assigned
+                               /dev/video3, the second /dev/video5. Any
+                               other cameras will get the first free 
+                               available slot (see below).
+
+     dev_hint=645:1,680:2      The PCA645 camera will get /dev/video1,
+                               and a PCVC680 /dev/video2.
+                               
+     dev_hint=645.0123:3,645.4567:0	The PCA645 camera with serialnumber 
+                                        0123 goes to /dev/video3, the same
+                                        camera model with the 4567 serial
+                                        gets /dev/video0.
+
+     dev_hint=750:1,4,5,6       The PCVC750 camera will get /dev/video1, the 
+                                next 3 Philips cams will use /dev/video4 
+                                through /dev/video6.
+
+   Some points worth knowing:
+   - Serialnumbers are case sensitive and must be written full, including 
+     leading zeroes (it's treated as a string).
+   - If a device node is already occupied, registration will fail and 
+     the webcam is not available.
+   - You can have up to 64 video devices; be sure to make enough device
+     nodes in /dev if you want to spread the numbers (this does not apply
+     to devfs). After /dev/video9 comes /dev/video10 (not /dev/videoA).
+   - If a camera does not match any dev_hint, it will simply get assigned
+     the first available device node, just as it used to be.
+
+trace
+   In order to better detect problems, it is now possible to turn on a
+   'trace' of some of the calls the module makes; it logs all items in your
+   kernel log at debug level.
+
+   The trace variable is a bitmask; each bit represents a certain feature.
+   If you want to trace something, look up the bit value(s) in the table 
+   below, add the values together and supply that to the trace variable.
+
+   Value  Value   Description					   Default
+   (dec)  (hex)
+       1    0x1   Module initialization; this will log messages       On
+                  while loading and unloading the module
+
+       2    0x2   probe() and disconnect() traces                     On
+
+       4    0x4   Trace open() and close() calls                      Off
+
+       8    0x8   read(), mmap() and associated ioctl() calls         Off
+
+      16   0x10   Memory allocation of buffers, etc.                  Off
+
+      32   0x20   Showing underflow, overflow and Dumping frame       On
+                  messages
+
+      64   0x40   Show viewport and image sizes                       Off
+
+     128   0x80   PWCX debugging                                      Off
+
+   For example, to trace the open() & read() fuctions, sum 8 + 4 = 12,
+   so you would supply trace=12 during insmod or modprobe. If
+   you want to turn the initialization and probing tracing off, set trace=0.
+   The default value for trace is 35 (0x23).
+
+
+
+Example:
+     
+     # modprobe pwc size=cif fps=15 power_save=1
+
+The fbufs, mbufs and trace parameters are global and apply to all connected
+cameras. Each camera has its own set of buffers.
+
+size and fps only specify defaults when you open() the device; this is to
+accommodate some tools that don't set the size. You can change these
+settings after open() with the Video4Linux ioctl() calls. The default of
+defaults is QCIF size at 10 fps.
+
+The compression parameter is semiglobal; it sets the initial compression
+preference for all camera's, but this parameter can be set per camera with
+the VIDIOCPWCSCQUAL ioctl() call.
+
+All parameters are optional.
+
diff --git a/drivers/media/video/pwc/pwc-ctrl.c b/drivers/media/video/pwc/pwc-ctrl.c
new file mode 100644
index 000000000000..0398b812e0ce
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-ctrl.c
@@ -0,0 +1,1541 @@
+/* Driver for Philips webcam
+   Functions that send various control messages to the webcam, including
+   video modes.
+   (C) 1999-2003 Nemosoft Unv.
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/*
+   Changes
+   2001/08/03  Alvarado   Added methods for changing white balance and 
+                          red/green gains
+ */
+
+/* Control functions for the cam; brightness, contrast, video mode, etc. */
+
+#ifdef __KERNEL__
+#include <asm/uaccess.h> 
+#endif
+#include <asm/errno.h>
+ 
+#include "pwc.h"
+#include "pwc-ioctl.h"
+#include "pwc-uncompress.h"
+#include "pwc-kiara.h"
+#include "pwc-timon.h"
+
+/* Request types: video */
+#define SET_LUM_CTL			0x01
+#define GET_LUM_CTL			0x02
+#define SET_CHROM_CTL			0x03
+#define GET_CHROM_CTL			0x04
+#define SET_STATUS_CTL			0x05
+#define GET_STATUS_CTL			0x06
+#define SET_EP_STREAM_CTL		0x07
+#define GET_EP_STREAM_CTL		0x08
+#define SET_MPT_CTL			0x0D
+#define GET_MPT_CTL			0x0E
+
+/* Selectors for the Luminance controls [GS]ET_LUM_CTL */
+#define AGC_MODE_FORMATTER			0x2000
+#define PRESET_AGC_FORMATTER			0x2100
+#define SHUTTER_MODE_FORMATTER			0x2200
+#define PRESET_SHUTTER_FORMATTER		0x2300
+#define PRESET_CONTOUR_FORMATTER		0x2400
+#define AUTO_CONTOUR_FORMATTER			0x2500
+#define BACK_LIGHT_COMPENSATION_FORMATTER	0x2600
+#define CONTRAST_FORMATTER			0x2700
+#define DYNAMIC_NOISE_CONTROL_FORMATTER		0x2800
+#define FLICKERLESS_MODE_FORMATTER		0x2900
+#define AE_CONTROL_SPEED			0x2A00
+#define BRIGHTNESS_FORMATTER			0x2B00
+#define GAMMA_FORMATTER				0x2C00
+
+/* Selectors for the Chrominance controls [GS]ET_CHROM_CTL */
+#define WB_MODE_FORMATTER			0x1000
+#define AWB_CONTROL_SPEED_FORMATTER		0x1100
+#define AWB_CONTROL_DELAY_FORMATTER		0x1200
+#define PRESET_MANUAL_RED_GAIN_FORMATTER	0x1300
+#define PRESET_MANUAL_BLUE_GAIN_FORMATTER	0x1400
+#define COLOUR_MODE_FORMATTER			0x1500
+#define SATURATION_MODE_FORMATTER1		0x1600
+#define SATURATION_MODE_FORMATTER2		0x1700
+
+/* Selectors for the Status controls [GS]ET_STATUS_CTL */
+#define SAVE_USER_DEFAULTS_FORMATTER		0x0200
+#define RESTORE_USER_DEFAULTS_FORMATTER		0x0300
+#define RESTORE_FACTORY_DEFAULTS_FORMATTER	0x0400
+#define READ_AGC_FORMATTER			0x0500
+#define READ_SHUTTER_FORMATTER			0x0600
+#define READ_RED_GAIN_FORMATTER			0x0700
+#define READ_BLUE_GAIN_FORMATTER		0x0800
+#define SENSOR_TYPE_FORMATTER1			0x0C00
+#define READ_RAW_Y_MEAN_FORMATTER		0x3100
+#define SET_POWER_SAVE_MODE_FORMATTER		0x3200
+#define MIRROR_IMAGE_FORMATTER			0x3300
+#define LED_FORMATTER				0x3400
+#define SENSOR_TYPE_FORMATTER2			0x3700
+
+/* Formatters for the Video Endpoint controls [GS]ET_EP_STREAM_CTL */
+#define VIDEO_OUTPUT_CONTROL_FORMATTER		0x0100
+
+/* Formatters for the motorized pan & tilt [GS]ET_MPT_CTL */
+#define PT_RELATIVE_CONTROL_FORMATTER		0x01
+#define PT_RESET_CONTROL_FORMATTER		0x02
+#define PT_STATUS_FORMATTER			0x03
+
+static const char *size2name[PSZ_MAX] =
+{
+	"subQCIF",
+	"QSIF",
+	"QCIF",
+	"SIF",
+	"CIF",
+	"VGA",
+};  
+
+/********/
+
+/* Entries for the Nala (645/646) camera; the Nala doesn't have compression 
+   preferences, so you either get compressed or non-compressed streams.
+   
+   An alternate value of 0 means this mode is not available at all.
+ */
+
+struct Nala_table_entry {
+	char alternate;			/* USB alternate setting */
+	int compressed;			/* Compressed yes/no */
+
+	unsigned char mode[3];		/* precomputed mode table */
+};
+
+static struct Nala_table_entry Nala_table[PSZ_MAX][8] =
+{
+#include "pwc-nala.h"
+};
+
+
+/****************************************************************************/
+
+
+#define SendControlMsg(request, value, buflen) \
+	usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0), \
+		request, \
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \
+		value, \
+		pdev->vcinterface, \
+		&buf, buflen, 500)
+
+#define RecvControlMsg(request, value, buflen) \
+	usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0), \
+		request, \
+		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, \
+		value, \
+		pdev->vcinterface, \
+		&buf, buflen, 500)
+
+
+#if PWC_DEBUG
+void pwc_hexdump(void *p, int len)
+{
+	int i;
+	unsigned char *s;
+	char buf[100], *d;
+
+	s = (unsigned char *)p;
+	d = buf;
+	*d = '\0';
+	Debug("Doing hexdump @ %p, %d bytes.\n", p, len);
+	for (i = 0; i < len; i++) {
+		d += sprintf(d, "%02X ", *s++);
+		if ((i & 0xF) == 0xF) {
+			Debug("%s\n", buf);
+			d = buf;
+			*d = '\0';
+		}
+	}
+	if ((i & 0xF) != 0)
+		Debug("%s\n", buf);
+}
+#endif
+
+static inline int send_video_command(struct usb_device *udev, int index, void *buf, int buflen)
+{
+	return usb_control_msg(udev,
+		usb_sndctrlpipe(udev, 0),
+		SET_EP_STREAM_CTL,
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		VIDEO_OUTPUT_CONTROL_FORMATTER,
+		index,
+		buf, buflen, 1000);
+}
+
+
+
+static inline int set_video_mode_Nala(struct pwc_device *pdev, int size, int frames)
+{
+	unsigned char buf[3];
+	int ret, fps;
+	struct Nala_table_entry *pEntry;
+	int frames2frames[31] =
+	{ /* closest match of framerate */
+	   0,  0,  0,  0,  4,  /*  0-4  */
+	   5,  5,  7,  7, 10,  /*  5-9  */
+          10, 10, 12, 12, 15,  /* 10-14 */
+          15, 15, 15, 20, 20,  /* 15-19 */
+          20, 20, 20, 24, 24,  /* 20-24 */
+          24, 24, 24, 24, 24,  /* 25-29 */
+          24                   /* 30    */
+	};
+	int frames2table[31] = 
+	{ 0, 0, 0, 0, 0, /*  0-4  */
+	  1, 1, 1, 2, 2, /*  5-9  */
+	  3, 3, 4, 4, 4, /* 10-14 */
+	  5, 5, 5, 5, 5, /* 15-19 */
+	  6, 6, 6, 6, 7, /* 20-24 */
+	  7, 7, 7, 7, 7, /* 25-29 */
+	  7              /* 30    */
+	};
+	
+	if (size < 0 || size > PSZ_CIF || frames < 4 || frames > 25)
+		return -EINVAL;
+	frames = frames2frames[frames];
+	fps = frames2table[frames];
+	pEntry = &Nala_table[size][fps];
+	if (pEntry->alternate == 0)
+		return -EINVAL;
+
+	if (pEntry->compressed)
+		return -ENOENT; /* Not supported. */
+
+	memcpy(buf, pEntry->mode, 3);	
+	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 3);
+	if (ret < 0) {
+		Debug("Failed to send video command... %d\n", ret);
+		return ret;
+	}
+	if (pEntry->compressed && pdev->vpalette != VIDEO_PALETTE_RAW)
+	 {
+	   switch(pdev->type) {
+	     case 645:
+	     case 646:
+/*	       pwc_dec1_init(pdev->type, pdev->release, buf, pdev->decompress_data); */
+	       break;
+
+	     case 675:
+	     case 680:
+	     case 690:
+	     case 720:
+	     case 730:
+	     case 740:
+	     case 750:
+/*	       pwc_dec23_init(pdev->type, pdev->release, buf, pdev->decompress_data); */
+	       break;
+	   }
+	}
+ 
+	pdev->cmd_len = 3;
+	memcpy(pdev->cmd_buf, buf, 3);
+
+	/* Set various parameters */
+	pdev->vframes = frames;
+	pdev->vsize = size;
+	pdev->valternate = pEntry->alternate;
+	pdev->image = pwc_image_sizes[size];
+	pdev->frame_size = (pdev->image.x * pdev->image.y * 3) / 2;
+	if (pEntry->compressed) {
+		if (pdev->release < 5) { /* 4 fold compression */
+			pdev->vbandlength = 528;
+			pdev->frame_size /= 4;
+		}
+		else {
+			pdev->vbandlength = 704;
+			pdev->frame_size /= 3;
+		}
+	}
+	else
+		pdev->vbandlength = 0;
+	return 0;
+}
+
+
+static inline int set_video_mode_Timon(struct pwc_device *pdev, int size, int frames, int compression, int snapshot)
+{
+	unsigned char buf[13];
+	const struct Timon_table_entry *pChoose;
+	int ret, fps;
+
+	if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)
+		return -EINVAL;
+	if (size == PSZ_VGA && frames > 15)
+		return -EINVAL;
+	fps = (frames / 5) - 1;
+
+	/* Find a supported framerate with progressively higher compression ratios
+	   if the preferred ratio is not available.
+	*/
+	pChoose = NULL;
+	while (compression <= 3) {
+	   pChoose = &Timon_table[size][fps][compression];
+	   if (pChoose->alternate != 0)
+	     break;
+	   compression++;
+	}
+	if (pChoose == NULL || pChoose->alternate == 0)
+		return -ENOENT; /* Not supported. */
+
+	memcpy(buf, pChoose->mode, 13);
+	if (snapshot)
+		buf[0] |= 0x80;
+	ret = send_video_command(pdev->udev, pdev->vendpoint, buf, 13);
+	if (ret < 0)
+		return ret;
+
+/* 	if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)
+	   pwc_dec23_init(pdev->type, pdev->release, buf, pdev->decompress_data); */
+
+	pdev->cmd_len = 13;
+	memcpy(pdev->cmd_buf, buf, 13);
+
+	/* Set various parameters */
+	pdev->vframes = frames;
+	pdev->vsize = size;
+	pdev->vsnapshot = snapshot;
+	pdev->valternate = pChoose->alternate;
+	pdev->image = pwc_image_sizes[size];
+	pdev->vbandlength = pChoose->bandlength;
+	if (pChoose->bandlength > 0)
+		pdev->frame_size = (pChoose->bandlength * pdev->image.y) / 4;
+	else
+		pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
+	return 0;
+}
+
+
+static inline int set_video_mode_Kiara(struct pwc_device *pdev, int size, int frames, int compression, int snapshot)
+{
+	const struct Kiara_table_entry *pChoose = NULL;
+	int fps, ret;
+	unsigned char buf[12];
+	struct Kiara_table_entry RawEntry = {6, 773, 1272, {0xAD, 0xF4, 0x10, 0x27, 0xB6, 0x24, 0x96, 0x02, 0x30, 0x05, 0x03, 0x80}};
+
+	if (size >= PSZ_MAX || frames < 5 || frames > 30 || compression < 0 || compression > 3)
+		return -EINVAL;
+	if (size == PSZ_VGA && frames > 15)
+		return -EINVAL;
+	fps = (frames / 5) - 1;
+
+	/* special case: VGA @ 5 fps and snapshot is raw bayer mode */
+	if (size == PSZ_VGA && frames == 5 && snapshot)
+	{
+		/* Only available in case the raw palette is selected or 
+		   we have the decompressor available. This mode is 
+		   only available in compressed form 
+		*/
+		if (pdev->vpalette == VIDEO_PALETTE_RAW)
+		{
+	                Info("Choosing VGA/5 BAYER mode (%d).\n", pdev->vpalette);
+			pChoose = &RawEntry;
+		}
+		else
+		{
+			Info("VGA/5 BAYER mode _must_ have a decompressor available, or use RAW palette.\n");
+		}
+	}
+	else
+	{
+        	/* Find a supported framerate with progressively higher compression ratios
+		   if the preferred ratio is not available.
+                   Skip this step when using RAW modes.
+		*/
+		while (compression <= 3) {
+			pChoose = &Kiara_table[size][fps][compression];
+			if (pChoose->alternate != 0)
+				break;
+			compression++;
+		}
+	}
+	if (pChoose == NULL || pChoose->alternate == 0)
+		return -ENOENT; /* Not supported. */
+
+	Debug("Using alternate setting %d.\n", pChoose->alternate);
+	
+	/* usb_control_msg won't take staticly allocated arrays as argument?? */
+	memcpy(buf, pChoose->mode, 12);
+	if (snapshot)
+		buf[0] |= 0x80;
+
+	/* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
+	ret = send_video_command(pdev->udev, 4 /* pdev->vendpoint */, buf, 12);
+	if (ret < 0)
+		return ret;
+
+/*	if (pChoose->bandlength > 0 && pdev->vpalette != VIDEO_PALETTE_RAW)
+	  pwc_dec23_init(pdev->type, pdev->release, buf, pdev->decompress_data); */
+
+	pdev->cmd_len = 12;
+	memcpy(pdev->cmd_buf, buf, 12);
+	/* All set and go */
+	pdev->vframes = frames;
+	pdev->vsize = size;
+	pdev->vsnapshot = snapshot;
+	pdev->valternate = pChoose->alternate;
+	pdev->image = pwc_image_sizes[size];
+	pdev->vbandlength = pChoose->bandlength;
+	if (pdev->vbandlength > 0)
+		pdev->frame_size = (pdev->vbandlength * pdev->image.y) / 4;
+	else
+		pdev->frame_size = (pdev->image.x * pdev->image.y * 12) / 8;
+	return 0;
+}
+
+
+
+static void pwc_set_image_buffer_size(struct pwc_device *pdev)
+{
+	int i, factor = 0, filler = 0;
+
+	/* for PALETTE_YUV420P */
+	switch(pdev->vpalette)
+	{
+	case VIDEO_PALETTE_YUV420P:
+		factor = 6;
+		filler = 128;
+		break;
+	case VIDEO_PALETTE_RAW:
+		factor = 6; /* can be uncompressed YUV420P */
+		filler = 0;
+		break;
+	}
+
+	/* Set sizes in bytes */
+	pdev->image.size = pdev->image.x * pdev->image.y * factor / 4;
+	pdev->view.size  = pdev->view.x  * pdev->view.y  * factor / 4;
+
+	/* Align offset, or you'll get some very weird results in
+	   YUV420 mode... x must be multiple of 4 (to get the Y's in
+	   place), and y even (or you'll mixup U & V). This is less of a
+	   problem for YUV420P.
+	 */
+	pdev->offset.x = ((pdev->view.x - pdev->image.x) / 2) & 0xFFFC;
+	pdev->offset.y = ((pdev->view.y - pdev->image.y) / 2) & 0xFFFE;
+
+	/* Fill buffers with gray or black */
+	for (i = 0; i < MAX_IMAGES; i++) {
+		if (pdev->image_ptr[i] != NULL)
+			memset(pdev->image_ptr[i], filler, pdev->view.size);
+	}
+}
+
+
+
+/**
+   @pdev: device structure
+   @width: viewport width
+   @height: viewport height
+   @frame: framerate, in fps
+   @compression: preferred compression ratio
+   @snapshot: snapshot mode or streaming
+ */
+int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot)
+{
+        int ret, size;
+
+        Trace(TRACE_FLOW, "set_video_mode(%dx%d @ %d, palette %d).\n", width, height, frames, pdev->vpalette);
+	size = pwc_decode_size(pdev, width, height);
+	if (size < 0) {
+		Debug("Could not find suitable size.\n");
+		return -ERANGE;
+	}
+	Debug("decode_size = %d.\n", size);
+
+        ret = -EINVAL;
+	switch(pdev->type) {
+	case 645:
+	case 646:
+		ret = set_video_mode_Nala(pdev, size, frames);
+		break;
+
+	case 675:
+	case 680:
+	case 690:
+		ret = set_video_mode_Timon(pdev, size, frames, compression, snapshot);
+		break;
+	
+	case 720:
+	case 730:
+	case 740:
+	case 750:
+		ret = set_video_mode_Kiara(pdev, size, frames, compression, snapshot);
+		break;
+	}
+	if (ret < 0) {
+		if (ret == -ENOENT)
+			Info("Video mode %s@%d fps is only supported with the decompressor module (pwcx).\n", size2name[size], frames);
+		else {
+			Err("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret);
+		}
+		return ret;
+	}
+	pdev->view.x = width;
+	pdev->view.y = height;
+	pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size;
+	pwc_set_image_buffer_size(pdev);
+	Trace(TRACE_SIZE, "Set viewport to %dx%d, image size is %dx%d.\n", width, height, pwc_image_sizes[size].x, pwc_image_sizes[size].y);
+	return 0;
+}
+
+
+/* BRIGHTNESS */
+
+int pwc_get_brightness(struct pwc_device *pdev)
+{
+	char buf;
+	int ret;
+
+	ret = RecvControlMsg(GET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);	
+	if (ret < 0)
+		return ret;
+	return buf << 9;
+}
+
+int pwc_set_brightness(struct pwc_device *pdev, int value)
+{
+	char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	buf = (value >> 9) & 0x7f;
+	return SendControlMsg(SET_LUM_CTL, BRIGHTNESS_FORMATTER, 1);
+}
+
+/* CONTRAST */
+
+int pwc_get_contrast(struct pwc_device *pdev)
+{
+	char buf;
+	int ret;
+
+	ret = RecvControlMsg(GET_LUM_CTL, CONTRAST_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	return buf << 10;
+}
+
+int pwc_set_contrast(struct pwc_device *pdev, int value)
+{
+	char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	buf = (value >> 10) & 0x3f;
+	return SendControlMsg(SET_LUM_CTL, CONTRAST_FORMATTER, 1);
+}
+
+/* GAMMA */
+
+int pwc_get_gamma(struct pwc_device *pdev)
+{
+	char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, GAMMA_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	return buf << 11;
+}
+
+int pwc_set_gamma(struct pwc_device *pdev, int value)
+{
+	char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	buf = (value >> 11) & 0x1f;
+	return SendControlMsg(SET_LUM_CTL, GAMMA_FORMATTER, 1);
+}
+
+
+/* SATURATION */
+
+int pwc_get_saturation(struct pwc_device *pdev)
+{
+	char buf;
+	int ret;
+
+	if (pdev->type < 675)
+		return -1;
+	ret = RecvControlMsg(GET_CHROM_CTL, pdev->type < 730 ? SATURATION_MODE_FORMATTER2 : SATURATION_MODE_FORMATTER1, 1);
+	if (ret < 0)
+		return ret;
+	return 32768 + buf * 327;
+}
+
+int pwc_set_saturation(struct pwc_device *pdev, int value)
+{
+	char buf;
+
+	if (pdev->type < 675)
+		return -EINVAL;
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	/* saturation ranges from -100 to +100 */
+	buf = (value - 32768) / 327;
+	return SendControlMsg(SET_CHROM_CTL, pdev->type < 730 ? SATURATION_MODE_FORMATTER2 : SATURATION_MODE_FORMATTER1, 1);
+}
+
+/* AGC */
+
+static inline int pwc_set_agc(struct pwc_device *pdev, int mode, int value)
+{
+	char buf;
+	int ret;
+	
+	if (mode)
+		buf = 0x0; /* auto */
+	else
+		buf = 0xff; /* fixed */
+
+	ret = SendControlMsg(SET_LUM_CTL, AGC_MODE_FORMATTER, 1);
+	
+	if (!mode && ret >= 0) {
+		if (value < 0)
+			value = 0;
+		if (value > 0xffff)
+			value = 0xffff;
+		buf = (value >> 10) & 0x3F;
+		ret = SendControlMsg(SET_LUM_CTL, PRESET_AGC_FORMATTER, 1);
+	}
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+static inline int pwc_get_agc(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, AGC_MODE_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+
+	if (buf != 0) { /* fixed */
+		ret = RecvControlMsg(GET_LUM_CTL, PRESET_AGC_FORMATTER, 1);
+		if (ret < 0)
+			return ret;
+		if (buf > 0x3F)
+			buf = 0x3F;
+		*value = (buf << 10);		
+	}
+	else { /* auto */
+		ret = RecvControlMsg(GET_STATUS_CTL, READ_AGC_FORMATTER, 1);
+		if (ret < 0)
+			return ret;
+		/* Gah... this value ranges from 0x00 ... 0x9F */
+		if (buf > 0x9F)
+			buf = 0x9F;
+		*value = -(48 + buf * 409);
+	}
+
+	return 0;
+}
+
+static inline int pwc_set_shutter_speed(struct pwc_device *pdev, int mode, int value)
+{
+	char buf[2];
+	int speed, ret;
+
+
+	if (mode)
+		buf[0] = 0x0;	/* auto */
+	else
+		buf[0] = 0xff; /* fixed */
+	
+	ret = SendControlMsg(SET_LUM_CTL, SHUTTER_MODE_FORMATTER, 1);
+
+	if (!mode && ret >= 0) {
+		if (value < 0)
+			value = 0;
+		if (value > 0xffff)
+			value = 0xffff;
+		switch(pdev->type) {
+		case 675:
+		case 680:
+		case 690:
+			/* speed ranges from 0x0 to 0x290 (656) */
+			speed = (value / 100);
+			buf[1] = speed >> 8;
+			buf[0] = speed & 0xff;
+			break;
+		case 720:
+		case 730:
+		case 740:
+		case 750:
+			/* speed seems to range from 0x0 to 0xff */
+			buf[1] = 0;
+			buf[0] = value >> 8;
+			break;
+		}
+
+		ret = SendControlMsg(SET_LUM_CTL, PRESET_SHUTTER_FORMATTER, 2);
+	}
+	return ret;
+}	
+
+
+/* POWER */
+
+int pwc_camera_power(struct pwc_device *pdev, int power)
+{
+	char buf;
+
+	if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6))
+		return 0;	/* Not supported by Nala or Timon < release 6 */
+
+	if (power)
+		buf = 0x00; /* active */
+	else
+		buf = 0xFF; /* power save */
+	return SendControlMsg(SET_STATUS_CTL, SET_POWER_SAVE_MODE_FORMATTER, 1);
+}
+
+
+
+/* private calls */
+
+static inline int pwc_restore_user(struct pwc_device *pdev)
+{
+	char buf; /* dummy */
+	return SendControlMsg(SET_STATUS_CTL, RESTORE_USER_DEFAULTS_FORMATTER, 0);
+}
+
+static inline int pwc_save_user(struct pwc_device *pdev)
+{
+	char buf; /* dummy */
+	return SendControlMsg(SET_STATUS_CTL, SAVE_USER_DEFAULTS_FORMATTER, 0);
+}
+
+static inline int pwc_restore_factory(struct pwc_device *pdev)
+{
+	char buf; /* dummy */
+	return SendControlMsg(SET_STATUS_CTL, RESTORE_FACTORY_DEFAULTS_FORMATTER, 0);
+}
+
+ /* ************************************************* */
+ /* Patch by Alvarado: (not in the original version   */
+
+ /*
+  * the camera recognizes modes from 0 to 4:
+  *
+  * 00: indoor (incandescant lighting)
+  * 01: outdoor (sunlight)
+  * 02: fluorescent lighting
+  * 03: manual
+  * 04: auto
+  */ 
+static inline int pwc_set_awb(struct pwc_device *pdev, int mode)
+{
+	char buf;
+	int ret;
+	
+	if (mode < 0)
+	    mode = 0;
+	
+	if (mode > 4)
+	    mode = 4;
+	
+	buf = mode & 0x07; /* just the lowest three bits */
+	
+	ret = SendControlMsg(SET_CHROM_CTL, WB_MODE_FORMATTER, 1);
+	
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+static inline int pwc_get_awb(struct pwc_device *pdev)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, WB_MODE_FORMATTER, 1);
+
+	if (ret < 0) 
+		return ret;
+	return buf;
+}
+
+static inline int pwc_set_red_gain(struct pwc_device *pdev, int value)
+{
+        unsigned char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	/* only the msb is considered */
+	buf = value >> 8;
+	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);
+}
+
+static inline int pwc_get_red_gain(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_RED_GAIN_FORMATTER, 1);
+	if (ret < 0)
+	    return ret;
+	*value = buf << 8;
+	return 0;
+}
+
+
+static inline int pwc_set_blue_gain(struct pwc_device *pdev, int value)
+{
+	unsigned char buf;
+
+	if (value < 0)
+		value = 0;
+	if (value > 0xffff)
+		value = 0xffff;
+	/* only the msb is considered */
+	buf = value >> 8;
+	return SendControlMsg(SET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);
+}
+
+static inline int pwc_get_blue_gain(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, PRESET_MANUAL_BLUE_GAIN_FORMATTER, 1);
+	if (ret < 0)
+	    return ret;
+	*value = buf << 8;
+	return 0;
+}
+
+
+/* The following two functions are different, since they only read the
+   internal red/blue gains, which may be different from the manual 
+   gains set or read above.
+ */   
+static inline int pwc_read_red_gain(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_STATUS_CTL, READ_RED_GAIN_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*value = buf << 8;
+	return 0;
+}
+
+static inline int pwc_read_blue_gain(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_STATUS_CTL, READ_BLUE_GAIN_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*value = buf << 8;
+	return 0;
+}
+
+
+static inline int pwc_set_wb_speed(struct pwc_device *pdev, int speed)
+{
+	unsigned char buf;
+	
+	/* useful range is 0x01..0x20 */
+	buf = speed / 0x7f0;
+	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);
+}
+
+static inline int pwc_get_wb_speed(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_SPEED_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*value = buf * 0x7f0;
+	return 0;
+}
+
+
+static inline int pwc_set_wb_delay(struct pwc_device *pdev, int delay)
+{
+	unsigned char buf;
+	
+	/* useful range is 0x01..0x3F */
+	buf = (delay >> 10);
+	return SendControlMsg(SET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);
+}
+
+static inline int pwc_get_wb_delay(struct pwc_device *pdev, int *value)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_CHROM_CTL, AWB_CONTROL_DELAY_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*value = buf << 10;
+	return 0;
+}
+
+
+int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value)
+{
+	unsigned char buf[2];
+
+	if (pdev->type < 730)
+		return 0;
+	on_value /= 100;
+	off_value /= 100;
+	if (on_value < 0)
+		on_value = 0;
+	if (on_value > 0xff)
+		on_value = 0xff;
+	if (off_value < 0)
+		off_value = 0;
+	if (off_value > 0xff)
+		off_value = 0xff;
+
+	buf[0] = on_value;
+	buf[1] = off_value;
+
+	return SendControlMsg(SET_STATUS_CTL, LED_FORMATTER, 2);
+}
+
+static int pwc_get_leds(struct pwc_device *pdev, int *on_value, int *off_value)
+{
+	unsigned char buf[2];
+	int ret;
+	
+	if (pdev->type < 730) {
+		*on_value = -1;
+		*off_value = -1;
+		return 0;
+	}
+
+	ret = RecvControlMsg(GET_STATUS_CTL, LED_FORMATTER, 2);
+	if (ret < 0)
+		return ret;
+	*on_value = buf[0] * 100;
+	*off_value = buf[1] * 100;
+	return 0;
+}
+
+static inline int pwc_set_contour(struct pwc_device *pdev, int contour)
+{
+	unsigned char buf;
+	int ret;
+	
+	if (contour < 0)
+		buf = 0xff; /* auto contour on */
+	else
+		buf = 0x0; /* auto contour off */
+	ret = SendControlMsg(SET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	
+	if (contour < 0)
+		return 0;
+	if (contour > 0xffff)
+		contour = 0xffff;
+	
+	buf = (contour >> 10); /* contour preset is [0..3f] */
+	ret = SendControlMsg(SET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);
+	if (ret < 0)	
+		return ret;	
+	return 0;
+}
+
+static inline int pwc_get_contour(struct pwc_device *pdev, int *contour)
+{
+	unsigned char buf;
+	int ret;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+
+	if (buf == 0) {
+		/* auto mode off, query current preset value */
+		ret = RecvControlMsg(GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, 1);
+		if (ret < 0)	
+			return ret;
+		*contour = buf << 10;
+	}
+	else
+		*contour = -1;
+	return 0;
+}
+
+
+static inline int pwc_set_backlight(struct pwc_device *pdev, int backlight)
+{
+	unsigned char buf;
+	
+	if (backlight)
+		buf = 0xff;
+	else
+		buf = 0x0;
+	return SendControlMsg(SET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);
+}
+
+static inline int pwc_get_backlight(struct pwc_device *pdev, int *backlight)
+{
+	int ret;
+	unsigned char buf;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, BACK_LIGHT_COMPENSATION_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*backlight = buf;
+	return 0;
+}
+
+
+static inline int pwc_set_flicker(struct pwc_device *pdev, int flicker)
+{
+	unsigned char buf;
+	
+	if (flicker)
+		buf = 0xff;
+	else
+		buf = 0x0;
+	return SendControlMsg(SET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
+}
+
+static inline int pwc_get_flicker(struct pwc_device *pdev, int *flicker)
+{
+	int ret;
+	unsigned char buf;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, FLICKERLESS_MODE_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*flicker = buf;
+	return 0;
+}
+
+
+static inline int pwc_set_dynamic_noise(struct pwc_device *pdev, int noise)
+{
+	unsigned char buf;
+
+	if (noise < 0)
+		noise = 0;
+	if (noise > 3)
+		noise = 3;
+	buf = noise;
+	return SendControlMsg(SET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
+}
+
+static inline int pwc_get_dynamic_noise(struct pwc_device *pdev, int *noise)
+{
+	int ret;
+	unsigned char buf;
+	
+	ret = RecvControlMsg(GET_LUM_CTL, DYNAMIC_NOISE_CONTROL_FORMATTER, 1);
+	if (ret < 0)
+		return ret;
+	*noise = buf;
+	return 0;
+}
+
+static int pwc_mpt_reset(struct pwc_device *pdev, int flags)
+{
+	unsigned char buf;
+	
+	buf = flags & 0x03; // only lower two bits are currently used
+	return SendControlMsg(SET_MPT_CTL, PT_RESET_CONTROL_FORMATTER, 1);
+}
+
+static inline int pwc_mpt_set_angle(struct pwc_device *pdev, int pan, int tilt)
+{
+	unsigned char buf[4];
+	
+	/* set new relative angle; angles are expressed in degrees * 100,
+	   but cam as .5 degree resolution, hence divide by 200. Also
+	   the angle must be multiplied by 64 before it's send to
+	   the cam (??)
+	 */
+	pan  =  64 * pan  / 100;
+	tilt = -64 * tilt / 100; /* positive tilt is down, which is not what the user would expect */
+	buf[0] = pan & 0xFF;
+	buf[1] = (pan >> 8) & 0xFF;
+	buf[2] = tilt & 0xFF;
+	buf[3] = (tilt >> 8) & 0xFF;
+	return SendControlMsg(SET_MPT_CTL, PT_RELATIVE_CONTROL_FORMATTER, 4);
+}
+
+static inline int pwc_mpt_get_status(struct pwc_device *pdev, struct pwc_mpt_status *status)
+{
+	int ret;
+	unsigned char buf[5];
+	
+	ret = RecvControlMsg(GET_MPT_CTL, PT_STATUS_FORMATTER, 5);
+	if (ret < 0)
+		return ret;
+	status->status = buf[0] & 0x7; // 3 bits are used for reporting
+	status->time_pan = (buf[1] << 8) + buf[2];
+	status->time_tilt = (buf[3] << 8) + buf[4];
+	return 0;
+}
+
+
+int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
+{
+	unsigned char buf;
+	int ret = -1, request;
+	
+	if (pdev->type < 675)
+		request = SENSOR_TYPE_FORMATTER1;
+	else if (pdev->type < 730)
+		return -1; /* The Vesta series doesn't have this call */
+	else
+		request = SENSOR_TYPE_FORMATTER2;
+	
+	ret = RecvControlMsg(GET_STATUS_CTL, request, 1);
+	if (ret < 0)
+		return ret;
+	if (pdev->type < 675)
+		*sensor = buf | 0x100;
+	else
+		*sensor = buf;
+	return 0;
+}
+
+
+ /* End of Add-Ons                                    */
+ /* ************************************************* */
+
+
+int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg)
+{
+	int ret = 0;
+
+	switch(cmd) {
+	case VIDIOCPWCRUSER:
+	{
+		if (pwc_restore_user(pdev))
+			ret = -EINVAL;
+		break;
+	}
+	
+	case VIDIOCPWCSUSER:
+	{
+		if (pwc_save_user(pdev))
+			ret = -EINVAL;
+		break;
+	}
+		
+	case VIDIOCPWCFACTORY:
+	{
+		if (pwc_restore_factory(pdev))
+			ret = -EINVAL;
+		break;
+	}
+	
+	case VIDIOCPWCSCQUAL:
+	{	
+		int *qual = arg;
+
+		if (*qual < 0 || *qual > 3)
+			ret = -EINVAL;
+		else
+			ret = pwc_try_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, *qual, pdev->vsnapshot);
+		if (ret >= 0)
+			pdev->vcompression = *qual;
+		break;
+	}
+	
+	case VIDIOCPWCGCQUAL:
+	{
+		int *qual = arg;
+		*qual = pdev->vcompression;
+		break;
+	}
+	
+	case VIDIOCPWCPROBE:
+	{
+		struct pwc_probe *probe = arg;
+		strcpy(probe->name, pdev->vdev->name);
+		probe->type = pdev->type;
+		break;
+	}
+
+	case VIDIOCPWCGSERIAL:
+	{
+		struct pwc_serial *serial = arg;
+		strcpy(serial->serial, pdev->serial);
+		break;
+	}
+
+	case VIDIOCPWCSAGC:
+	{
+		int *agc = arg;
+		if (pwc_set_agc(pdev, *agc < 0 ? 1 : 0, *agc))
+			ret = -EINVAL;
+		break;
+	}
+	
+	case VIDIOCPWCGAGC:
+	{
+		int *agc = arg;
+		
+		if (pwc_get_agc(pdev, agc))
+			ret = -EINVAL;
+		break;
+	}
+	
+	case VIDIOCPWCSSHUTTER:
+	{
+		int *shutter_speed = arg;
+		ret = pwc_set_shutter_speed(pdev, *shutter_speed < 0 ? 1 : 0, *shutter_speed);
+		break;
+	}
+	
+        case VIDIOCPWCSAWB:
+	{
+		struct pwc_whitebalance *wb = arg;
+		
+		ret = pwc_set_awb(pdev, wb->mode);
+		if (ret >= 0 && wb->mode == PWC_WB_MANUAL) {
+			pwc_set_red_gain(pdev, wb->manual_red);
+			pwc_set_blue_gain(pdev, wb->manual_blue);
+		}
+		break;
+	}
+
+	case VIDIOCPWCGAWB:
+	{
+		struct pwc_whitebalance *wb = arg;
+
+		memset(wb, 0, sizeof(struct pwc_whitebalance));
+		wb->mode = pwc_get_awb(pdev);
+		if (wb->mode < 0)
+			ret = -EINVAL;
+		else {
+			if (wb->mode == PWC_WB_MANUAL) {
+				ret = pwc_get_red_gain(pdev, &wb->manual_red);
+				if (ret < 0)
+					break;
+				ret = pwc_get_blue_gain(pdev, &wb->manual_blue);
+				if (ret < 0)
+					break;
+			}
+			if (wb->mode == PWC_WB_AUTO) {
+				ret = pwc_read_red_gain(pdev, &wb->read_red);
+				if (ret < 0)
+					break;
+ 				ret = pwc_read_blue_gain(pdev, &wb->read_blue);
+ 				if (ret < 0)
+ 					break;
+			}
+		}
+		break;
+	}
+	
+	case VIDIOCPWCSAWBSPEED:
+	{
+		struct pwc_wb_speed *wbs = arg;
+		
+		if (wbs->control_speed > 0) {
+			ret = pwc_set_wb_speed(pdev, wbs->control_speed);
+		}
+		if (wbs->control_delay > 0) {
+			ret = pwc_set_wb_delay(pdev, wbs->control_delay);
+		}
+		break;
+	}
+	
+	case VIDIOCPWCGAWBSPEED:
+	{
+		struct pwc_wb_speed *wbs = arg;
+		
+		ret = pwc_get_wb_speed(pdev, &wbs->control_speed);
+		if (ret < 0)
+			break;
+		ret = pwc_get_wb_delay(pdev, &wbs->control_delay);
+		if (ret < 0)
+			break;
+		break;
+	}
+
+        case VIDIOCPWCSLED:
+	{
+		struct pwc_leds *leds = arg;
+		ret = pwc_set_leds(pdev, leds->led_on, leds->led_off);
+	    	break;
+	}
+
+
+	case VIDIOCPWCGLED:
+	{
+		struct pwc_leds *leds = arg;
+		ret = pwc_get_leds(pdev, &leds->led_on, &leds->led_off);
+		break;
+	}
+
+	case VIDIOCPWCSCONTOUR:
+	{
+		int *contour = arg;
+		ret = pwc_set_contour(pdev, *contour);
+		break;
+	}
+			
+	case VIDIOCPWCGCONTOUR:
+	{
+		int *contour = arg;
+		ret = pwc_get_contour(pdev, contour);
+		break;
+	}
+	
+	case VIDIOCPWCSBACKLIGHT:
+	{
+		int *backlight = arg;
+		ret = pwc_set_backlight(pdev, *backlight);
+		break;
+	}
+
+	case VIDIOCPWCGBACKLIGHT:
+	{
+		int *backlight = arg;
+		ret = pwc_get_backlight(pdev, backlight);
+		break;
+	}
+	
+	case VIDIOCPWCSFLICKER:
+	{
+		int *flicker = arg;
+		ret = pwc_set_flicker(pdev, *flicker);
+		break;
+	}
+
+	case VIDIOCPWCGFLICKER:
+	{
+		int *flicker = arg;
+		ret = pwc_get_flicker(pdev, flicker);
+		break;
+	}
+	
+	case VIDIOCPWCSDYNNOISE:
+	{
+		int *dynnoise = arg;
+		ret = pwc_set_dynamic_noise(pdev, *dynnoise);
+		break;
+	}
+	
+	case VIDIOCPWCGDYNNOISE:
+	{
+		int *dynnoise = arg;
+		ret = pwc_get_dynamic_noise(pdev, dynnoise);
+		break;
+	}
+
+	case VIDIOCPWCGREALSIZE:
+	{
+		struct pwc_imagesize *size = arg;
+		size->width = pdev->image.x;
+		size->height = pdev->image.y;
+		break;
+ 	}
+ 	
+ 	case VIDIOCPWCMPTRESET:
+ 	{
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+	 		int *flags = arg;
+
+			ret = pwc_mpt_reset(pdev, *flags);
+ 			if (ret >= 0)
+ 			{
+ 				pdev->pan_angle = 0;
+ 				pdev->tilt_angle = 0;
+ 			}
+ 		}
+ 		else
+ 		{
+ 			ret = -ENXIO;
+ 		}
+ 		break;		
+ 	}
+ 	
+ 	case VIDIOCPWCMPTGRANGE:
+ 	{
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+ 			struct pwc_mpt_range *range = arg;
+ 			*range = pdev->angle_range;
+ 		}
+ 		else
+ 		{	
+ 			ret = -ENXIO;
+ 		}
+ 		break;
+ 	}
+ 	
+ 	case VIDIOCPWCMPTSANGLE:
+ 	{
+ 		int new_pan, new_tilt;
+ 		
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+	 		struct pwc_mpt_angles *angles = arg;
+			/* The camera can only set relative angles, so
+			   do some calculations when getting an absolute angle .
+			 */
+			if (angles->absolute)
+			{
+ 				new_pan  = angles->pan;
+ 				new_tilt = angles->tilt;
+ 			}
+ 			else
+ 			{
+ 				new_pan  = pdev->pan_angle  + angles->pan;
+ 				new_tilt = pdev->tilt_angle + angles->tilt;
+			}
+			/* check absolute ranges */
+			if (new_pan  < pdev->angle_range.pan_min  ||
+			    new_pan  > pdev->angle_range.pan_max  ||
+			    new_tilt < pdev->angle_range.tilt_min ||
+			    new_tilt > pdev->angle_range.tilt_max)
+			{
+				ret = -ERANGE;
+			}
+			else
+			{
+				/* go to relative range, check again */
+				new_pan  -= pdev->pan_angle;
+				new_tilt -= pdev->tilt_angle;
+				/* angles are specified in degrees * 100, thus the limit = 36000 */
+				if (new_pan < -36000 || new_pan > 36000 || new_tilt < -36000 || new_tilt > 36000)
+					ret = -ERANGE;
+			}
+			if (ret == 0) /* no errors so far */
+			{
+				ret = pwc_mpt_set_angle(pdev, new_pan, new_tilt);
+				if (ret >= 0)
+				{
+					pdev->pan_angle  += new_pan;
+					pdev->tilt_angle += new_tilt;
+				}
+				if (ret == -EPIPE) /* stall -> out of range */
+					ret = -ERANGE;				
+			}
+ 		}
+ 		else
+ 		{
+ 			ret = -ENXIO;
+ 		}
+ 		break;
+ 	}
+
+ 	case VIDIOCPWCMPTGANGLE:
+ 	{
+ 		
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+	 		struct pwc_mpt_angles *angles = arg;
+
+ 			angles->absolute = 1;
+ 			angles->pan  = pdev->pan_angle;
+ 			angles->tilt = pdev->tilt_angle;
+ 		}
+ 		else
+ 		{
+ 			ret = -ENXIO;
+ 		}
+ 		break;
+ 	}
+ 
+ 	case VIDIOCPWCMPTSTATUS:
+ 	{
+ 		if (pdev->features & FEATURE_MOTOR_PANTILT)
+ 		{
+ 			struct pwc_mpt_status *status = arg;
+ 			ret = pwc_mpt_get_status(pdev, status);
+ 		}
+ 		else
+ 		{
+ 			ret = -ENXIO;
+ 		}
+ 		break;
+	}
+
+	case VIDIOCPWCGVIDCMD:
+	{
+		struct pwc_video_command *cmd = arg;
+		
+                cmd->type = pdev->type;
+		cmd->release = pdev->release;
+		cmd->command_len = pdev->cmd_len;
+		memcpy(&cmd->command_buf, pdev->cmd_buf, pdev->cmd_len);
+		cmd->bandlength = pdev->vbandlength;
+		cmd->frame_size = pdev->frame_size;
+		break;
+	}
+       /*
+	case VIDIOCPWCGVIDTABLE:
+	{
+		struct pwc_table_init_buffer *table = arg;
+		table->len = pdev->cmd_len;
+		memcpy(&table->buffer, pdev->decompress_data, pdev->decompressor->table_size);
+		break;
+	}
+	*/
+
+	default:
+		ret = -ENOIOCTLCMD;
+		break;
+	}
+	
+	if (ret > 0)
+		return 0;
+	return ret;
+}
+
+
+
diff --git a/drivers/media/video/pwc/pwc-if.c b/drivers/media/video/pwc/pwc-if.c
new file mode 100644
index 000000000000..90eb26042817
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-if.c
@@ -0,0 +1,2205 @@
+/* Linux driver for Philips webcam
+   USB and Video4Linux interface part.
+   (C) 1999-2004 Nemosoft Unv.
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+/*  
+   This code forms the interface between the USB layers and the Philips
+   specific stuff. Some adanved stuff of the driver falls under an
+   NDA, signed between me and Philips B.V., Eindhoven, the Netherlands, and
+   is thus not distributed in source form. The binary pwcx.o module 
+   contains the code that falls under the NDA.
+   
+   In case you're wondering: 'pwc' stands for "Philips WebCam", but 
+   I really didn't want to type 'philips_web_cam' every time (I'm lazy as
+   any Linux kernel hacker, but I don't like uncomprehensible abbreviations
+   without explanation).
+   
+   Oh yes, convention: to disctinguish between all the various pointers to
+   device-structures, I use these names for the pointer variables:
+   udev: struct usb_device *
+   vdev: struct video_device *
+   pdev: struct pwc_devive *
+*/
+
+/* Contributors:
+   - Alvarado: adding whitebalance code
+   - Alistar Moire: QuickCam 3000 Pro device/product ID
+   - Tony Hoyle: Creative Labs Webcam 5 device/product ID
+   - Mark Burazin: solving hang in VIDIOCSYNC when camera gets unplugged
+   - Jk Fang: Sotec Afina Eye ID
+   - Xavier Roche: QuickCam Pro 4000 ID
+   - Jens Knudsen: QuickCam Zoom ID
+   - J. Debert: QuickCam for Notebooks ID
+*/
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <asm/io.h>
+
+#include "pwc.h"
+#include "pwc-ioctl.h"
+#include "pwc-kiara.h"
+#include "pwc-timon.h"
+#include "pwc-uncompress.h"
+
+/* Function prototypes and driver templates */
+
+/* hotplug device table support */
+static struct usb_device_id pwc_device_table [] = {
+	{ USB_DEVICE(0x0471, 0x0302) }, /* Philips models */
+	{ USB_DEVICE(0x0471, 0x0303) },
+	{ USB_DEVICE(0x0471, 0x0304) },
+	{ USB_DEVICE(0x0471, 0x0307) },
+	{ USB_DEVICE(0x0471, 0x0308) },
+	{ USB_DEVICE(0x0471, 0x030C) },
+	{ USB_DEVICE(0x0471, 0x0310) },
+	{ USB_DEVICE(0x0471, 0x0311) },
+	{ USB_DEVICE(0x0471, 0x0312) },
+	{ USB_DEVICE(0x0471, 0x0313) }, /* the 'new' 720K */
+	{ USB_DEVICE(0x069A, 0x0001) }, /* Askey */
+	{ USB_DEVICE(0x046D, 0x08B0) }, /* Logitech QuickCam Pro 3000 */
+	{ USB_DEVICE(0x046D, 0x08B1) }, /* Logitech QuickCam Notebook Pro */
+	{ USB_DEVICE(0x046D, 0x08B2) }, /* Logitech QuickCam Pro 4000 */
+	{ USB_DEVICE(0x046D, 0x08B3) }, /* Logitech QuickCam Zoom (old model) */
+	{ USB_DEVICE(0x046D, 0x08B4) }, /* Logitech QuickCam Zoom (new model) */
+	{ USB_DEVICE(0x046D, 0x08B5) }, /* Logitech QuickCam Orbit/Sphere */
+	{ USB_DEVICE(0x046D, 0x08B6) }, /* Logitech (reserved) */
+	{ USB_DEVICE(0x046D, 0x08B7) }, /* Logitech (reserved) */
+	{ USB_DEVICE(0x046D, 0x08B8) }, /* Logitech (reserved) */
+	{ USB_DEVICE(0x055D, 0x9000) }, /* Samsung */
+	{ USB_DEVICE(0x055D, 0x9001) },
+	{ USB_DEVICE(0x041E, 0x400C) }, /* Creative Webcam 5 */
+	{ USB_DEVICE(0x041E, 0x4011) }, /* Creative Webcam Pro Ex */
+	{ USB_DEVICE(0x04CC, 0x8116) }, /* Afina Eye */
+	{ USB_DEVICE(0x06BE, 0x8116) }, /* new Afina Eye */
+	{ USB_DEVICE(0x0d81, 0x1910) }, /* Visionite */
+	{ USB_DEVICE(0x0d81, 0x1900) },
+	{ }
+};
+MODULE_DEVICE_TABLE(usb, pwc_device_table);
+
+static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id);
+static void usb_pwc_disconnect(struct usb_interface *intf);
+
+static struct usb_driver pwc_driver = {
+	.name =			"Philips webcam",	/* name */
+	.id_table =		pwc_device_table,
+	.probe =		usb_pwc_probe,		/* probe() */
+	.disconnect =		usb_pwc_disconnect,	/* disconnect() */
+};
+
+#define MAX_DEV_HINTS	20
+#define MAX_ISOC_ERRORS	20
+
+static int default_size = PSZ_QCIF;
+static int default_fps = 10;
+static int default_fbufs = 3;   /* Default number of frame buffers */
+static int default_mbufs = 2;	/* Default number of mmap() buffers */
+       int pwc_trace = TRACE_MODULE | TRACE_FLOW | TRACE_PWCX;
+static int power_save = 0;
+static int led_on = 100, led_off = 0; /* defaults to LED that is on while in use */
+static int pwc_preferred_compression = 2; /* 0..3 = uncompressed..high */
+static struct {
+	int type;
+	char serial_number[30];
+	int device_node;
+	struct pwc_device *pdev;
+} device_hint[MAX_DEV_HINTS];
+
+/***/
+
+static int pwc_video_open(struct inode *inode, struct file *file);
+static int pwc_video_close(struct inode *inode, struct file *file);
+static ssize_t pwc_video_read(struct file *file, char __user * buf,
+			  size_t count, loff_t *ppos);
+static unsigned int pwc_video_poll(struct file *file, poll_table *wait);
+static int  pwc_video_ioctl(struct inode *inode, struct file *file,
+			    unsigned int ioctlnr, unsigned long arg);
+static int  pwc_video_mmap(struct file *file, struct vm_area_struct *vma);
+
+static struct file_operations pwc_fops = {
+	.owner =	THIS_MODULE,
+	.open =		pwc_video_open,
+	.release =     	pwc_video_close,
+	.read =		pwc_video_read,
+	.poll =		pwc_video_poll,
+	.mmap =		pwc_video_mmap,
+	.ioctl =        pwc_video_ioctl,
+	.compat_ioctl = v4l_compat_ioctl32,
+	.llseek =       no_llseek,
+};
+static struct video_device pwc_template = {
+	.owner =	THIS_MODULE,
+	.name =		"Philips Webcam",	/* Filled in later */
+	.type =		VID_TYPE_CAPTURE,
+	.hardware =	VID_HARDWARE_PWC,
+	.release =	video_device_release,
+	.fops =         &pwc_fops,
+	.minor =        -1,
+};
+
+/***************************************************************************/
+
+/* Okay, this is some magic that I worked out and the reasoning behind it...
+
+   The biggest problem with any USB device is of course: "what to do 
+   when the user unplugs the device while it is in use by an application?"
+   We have several options:
+   1) Curse them with the 7 plagues when they do (requires divine intervention)
+   2) Tell them not to (won't work: they'll do it anyway)
+   3) Oops the kernel (this will have a negative effect on a user's uptime)
+   4) Do something sensible.
+   
+   Of course, we go for option 4.
+
+   It happens that this device will be linked to two times, once from
+   usb_device and once from the video_device in their respective 'private'
+   pointers. This is done when the device is probed() and all initialization
+   succeeded. The pwc_device struct links back to both structures.
+
+   When a device is unplugged while in use it will be removed from the 
+   list of known USB devices; I also de-register it as a V4L device, but 
+   unfortunately I can't free the memory since the struct is still in use
+   by the file descriptor. This free-ing is then deferend until the first
+   opportunity. Crude, but it works.
+   
+   A small 'advantage' is that if a user unplugs the cam and plugs it back
+   in, it should get assigned the same video device minor, but unfortunately
+   it's non-trivial to re-link the cam back to the video device... (that 
+   would surely be magic! :))
+*/
+
+/***************************************************************************/
+/* Private functions */
+
+/* Here we want the physical address of the memory.
+ * This is used when initializing the contents of the area.
+ */
+static inline unsigned long kvirt_to_pa(unsigned long adr) 
+{
+        unsigned long kva, ret;
+
+	kva = (unsigned long) page_address(vmalloc_to_page((void *)adr));
+	kva |= adr & (PAGE_SIZE-1); /* restore the offset */
+	ret = __pa(kva);
+        return ret;
+}
+
+static void * rvmalloc(unsigned long size)
+{
+	void * mem;
+	unsigned long adr;
+
+	size=PAGE_ALIGN(size);
+        mem=vmalloc_32(size);
+	if (mem) 
+	{
+		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) 
+	{
+	        adr=(unsigned long) mem;
+		while ((long) size > 0) 
+                {
+			ClearPageReserved(vmalloc_to_page((void *)adr));
+			adr+=PAGE_SIZE;
+			size-=PAGE_SIZE;
+		}
+		vfree(mem);
+	}
+}
+
+
+
+
+static int pwc_allocate_buffers(struct pwc_device *pdev)
+{
+	int i;
+	void *kbuf;
+
+	Trace(TRACE_MEMORY, ">> pwc_allocate_buffers(pdev = 0x%p)\n", pdev);
+
+	if (pdev == NULL)
+		return -ENXIO;
+		
+#ifdef PWC_MAGIC
+	if (pdev->magic != PWC_MAGIC) {
+		Err("allocate_buffers(): magic failed.\n");
+		return -ENXIO;
+	}
+#endif	
+	/* Allocate Isochronous pipe buffers */
+	for (i = 0; i < MAX_ISO_BUFS; i++) {
+		if (pdev->sbuf[i].data == NULL) {
+			kbuf = kmalloc(ISO_BUFFER_SIZE, GFP_KERNEL);
+			if (kbuf == NULL) {
+				Err("Failed to allocate iso buffer %d.\n", i);
+				return -ENOMEM;
+			}
+			Trace(TRACE_MEMORY, "Allocated iso buffer at %p.\n", kbuf);
+			pdev->sbuf[i].data = kbuf;
+			memset(kbuf, 0, ISO_BUFFER_SIZE);
+		}
+	}
+
+	/* Allocate frame buffer structure */
+	if (pdev->fbuf == NULL) {
+		kbuf = kmalloc(default_fbufs * sizeof(struct pwc_frame_buf), GFP_KERNEL);
+		if (kbuf == NULL) {
+			Err("Failed to allocate frame buffer structure.\n");
+			return -ENOMEM;
+		}
+		Trace(TRACE_MEMORY, "Allocated frame buffer structure at %p.\n", kbuf);
+		pdev->fbuf = kbuf;
+		memset(kbuf, 0, default_fbufs * sizeof(struct pwc_frame_buf));
+	}
+	/* create frame buffers, and make circular ring */
+	for (i = 0; i < default_fbufs; i++) {
+		if (pdev->fbuf[i].data == NULL) {
+			kbuf = vmalloc(PWC_FRAME_SIZE); /* need vmalloc since frame buffer > 128K */
+			if (kbuf == NULL) {
+				Err("Failed to allocate frame buffer %d.\n", i);
+				return -ENOMEM;
+			}
+			Trace(TRACE_MEMORY, "Allocated frame buffer %d at %p.\n", i, kbuf);
+			pdev->fbuf[i].data = kbuf;
+			memset(kbuf, 128, PWC_FRAME_SIZE);
+		}
+	}
+	
+	/* Allocate decompressor table space */
+	kbuf = NULL;
+	switch (pdev->type)
+	 {
+	  case 675:
+	  case 680:
+	  case 690:
+	  case 720:
+	  case 730:
+	  case 740:
+	  case 750:
+#if 0	  
+	    Trace(TRACE_MEMORY,"private_data(%zu)\n",sizeof(struct pwc_dec23_private));
+	    kbuf = kmalloc(sizeof(struct pwc_dec23_private), GFP_KERNEL);	/* Timon & Kiara */
+	    break;
+	  case 645:
+	  case 646:
+	    /* TODO & FIXME */
+	    kbuf = kmalloc(sizeof(struct pwc_dec23_private), GFP_KERNEL);
+	    break;
+#endif	 
+	;
+	 }
+	pdev->decompress_data = kbuf;
+	
+	/* Allocate image buffer; double buffer for mmap() */
+	kbuf = rvmalloc(default_mbufs * pdev->len_per_image);
+	if (kbuf == NULL) {
+		Err("Failed to allocate image buffer(s). needed (%d)\n",default_mbufs * pdev->len_per_image);
+		return -ENOMEM;
+	}
+	Trace(TRACE_MEMORY, "Allocated image buffer at %p.\n", kbuf);
+	pdev->image_data = kbuf;
+	for (i = 0; i < default_mbufs; i++)
+		pdev->image_ptr[i] = kbuf + i * pdev->len_per_image;
+	for (; i < MAX_IMAGES; i++)
+		pdev->image_ptr[i] = NULL;
+
+	kbuf = NULL;
+	  
+	Trace(TRACE_MEMORY, "<< pwc_allocate_buffers()\n");
+	return 0;
+}
+
+static void pwc_free_buffers(struct pwc_device *pdev)
+{
+	int i;
+
+	Trace(TRACE_MEMORY, "Entering free_buffers(%p).\n", pdev);
+
+	if (pdev == NULL)
+		return;
+#ifdef PWC_MAGIC
+	if (pdev->magic != PWC_MAGIC) {
+		Err("free_buffers(): magic failed.\n");
+		return;
+	}
+#endif	
+
+	/* Release Iso-pipe buffers */
+	for (i = 0; i < MAX_ISO_BUFS; i++)
+		if (pdev->sbuf[i].data != NULL) {
+			Trace(TRACE_MEMORY, "Freeing ISO buffer at %p.\n", pdev->sbuf[i].data);
+			kfree(pdev->sbuf[i].data);
+			pdev->sbuf[i].data = NULL;
+		}
+
+	/* The same for frame buffers */
+	if (pdev->fbuf != NULL) {
+		for (i = 0; i < default_fbufs; i++) {
+			if (pdev->fbuf[i].data != NULL) {
+				Trace(TRACE_MEMORY, "Freeing frame buffer %d at %p.\n", i, pdev->fbuf[i].data);
+				vfree(pdev->fbuf[i].data);
+				pdev->fbuf[i].data = NULL;
+			}
+		}
+		kfree(pdev->fbuf);
+		pdev->fbuf = NULL;
+	}
+
+	/* Intermediate decompression buffer & tables */
+	if (pdev->decompress_data != NULL) {
+		Trace(TRACE_MEMORY, "Freeing decompression buffer at %p.\n", pdev->decompress_data);
+		kfree(pdev->decompress_data);
+		pdev->decompress_data = NULL;
+	}
+	pdev->decompressor = NULL;
+
+	/* Release image buffers */
+	if (pdev->image_data != NULL) {
+		Trace(TRACE_MEMORY, "Freeing image buffer at %p.\n", pdev->image_data);
+		rvfree(pdev->image_data, default_mbufs * pdev->len_per_image);
+	}
+	pdev->image_data = NULL;
+	
+	Trace(TRACE_MEMORY, "Leaving free_buffers().\n");
+}
+
+/* The frame & image buffer mess. 
+
+   Yes, this is a mess. Well, it used to be simple, but alas...  In this
+   module, 3 buffers schemes are used to get the data from the USB bus to
+   the user program. The first scheme involves the ISO buffers (called thus
+   since they transport ISO data from the USB controller), and not really
+   interesting. Suffices to say the data from this buffer is quickly 
+   gathered in an interrupt handler (pwc_isoc_handler) and placed into the
+   frame buffer.
+
+   The frame buffer is the second scheme, and is the central element here.
+   It collects the data from a single frame from the camera (hence, the
+   name). Frames are delimited by the USB camera with a short USB packet,
+   so that's easy to detect. The frame buffers form a list that is filled
+   by the camera+USB controller and drained by the user process through
+   either read() or mmap().
+
+   The image buffer is the third scheme, in which frames are decompressed
+   and converted into planar format. For mmap() there is more than
+   one image buffer available.
+
+   The frame buffers provide the image buffering. In case the user process
+   is a bit slow, this introduces lag and some undesired side-effects.
+   The problem arises when the frame buffer is full. I used to drop the last
+   frame, which makes the data in the queue stale very quickly. But dropping
+   the frame at the head of the queue proved to be a litte bit more difficult.
+   I tried a circular linked scheme, but this introduced more problems than
+   it solved.
+
+   Because filling and draining are completely asynchronous processes, this
+   requires some fiddling with pointers and mutexes.
+
+   Eventually, I came up with a system with 2 lists: an 'empty' frame list
+   and a 'full' frame list:
+     * Initially, all frame buffers but one are on the 'empty' list; the one
+       remaining buffer is our initial fill frame.
+     * If a frame is needed for filling, we try to take it from the 'empty' 
+       list, unless that list is empty, in which case we take the buffer at 
+       the head of the 'full' list.
+     * When our fill buffer has been filled, it is appended to the 'full'
+       list.
+     * If a frame is needed by read() or mmap(), it is taken from the head of
+       the 'full' list, handled, and then appended to the 'empty' list. If no
+       buffer is present on the 'full' list, we wait.
+   The advantage is that the buffer that is currently being decompressed/
+   converted, is on neither list, and thus not in our way (any other scheme
+   I tried had the problem of old data lingering in the queue).
+
+   Whatever strategy you choose, it always remains a tradeoff: with more
+   frame buffers the chances of a missed frame are reduced. On the other
+   hand, on slower machines it introduces lag because the queue will
+   always be full.
+ */
+
+/**
+  \brief Find next frame buffer to fill. Take from empty or full list, whichever comes first.
+ */
+static inline int pwc_next_fill_frame(struct pwc_device *pdev)
+{
+	int ret;
+	unsigned long flags;
+
+	ret = 0;
+	spin_lock_irqsave(&pdev->ptrlock, flags);
+	if (pdev->fill_frame != NULL) {
+		/* append to 'full' list */
+		if (pdev->full_frames == NULL) {
+			pdev->full_frames = pdev->fill_frame;
+			pdev->full_frames_tail = pdev->full_frames;
+		}
+		else {
+			pdev->full_frames_tail->next = pdev->fill_frame;
+			pdev->full_frames_tail = pdev->fill_frame;
+		}
+	}
+	if (pdev->empty_frames != NULL) {
+		/* We have empty frames available. That's easy */
+		pdev->fill_frame = pdev->empty_frames;
+		pdev->empty_frames = pdev->empty_frames->next;
+	}
+	else {
+		/* Hmm. Take it from the full list */
+#if PWC_DEBUG
+		/* sanity check */
+		if (pdev->full_frames == NULL) {
+			Err("Neither empty or full frames available!\n");
+			spin_unlock_irqrestore(&pdev->ptrlock, flags);
+			return -EINVAL;
+		}
+#endif
+		pdev->fill_frame = pdev->full_frames;
+		pdev->full_frames = pdev->full_frames->next;
+		ret = 1;
+	}
+	pdev->fill_frame->next = NULL;
+#if PWC_DEBUG
+	Trace(TRACE_SEQUENCE, "Assigning sequence number %d.\n", pdev->sequence);
+	pdev->fill_frame->sequence = pdev->sequence++;
+#endif
+	spin_unlock_irqrestore(&pdev->ptrlock, flags);
+	return ret;
+}
+
+
+/**
+  \brief Reset all buffers, pointers and lists, except for the image_used[] buffer.
+
+  If the image_used[] buffer is cleared too, mmap()/VIDIOCSYNC will run into trouble.
+ */
+static void pwc_reset_buffers(struct pwc_device *pdev)
+{
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdev->ptrlock, flags);
+	pdev->full_frames = NULL;
+	pdev->full_frames_tail = NULL;
+	for (i = 0; i < default_fbufs; i++) {
+		pdev->fbuf[i].filled = 0;
+		if (i > 0)
+			pdev->fbuf[i].next = &pdev->fbuf[i - 1];
+		else
+			pdev->fbuf->next = NULL;
+	}
+	pdev->empty_frames = &pdev->fbuf[default_fbufs - 1];
+	pdev->empty_frames_tail = pdev->fbuf;
+	pdev->read_frame = NULL;
+	pdev->fill_frame = pdev->empty_frames;
+	pdev->empty_frames = pdev->empty_frames->next;
+
+	pdev->image_read_pos = 0;
+	pdev->fill_image = 0;
+	spin_unlock_irqrestore(&pdev->ptrlock, flags);
+}
+
+
+/**
+  \brief Do all the handling for getting one frame: get pointer, decompress, advance pointers.
+ */
+static int pwc_handle_frame(struct pwc_device *pdev)
+{
+	int ret = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdev->ptrlock, flags);
+	/* First grab our read_frame; this is removed from all lists, so
+	   we can release the lock after this without problems */
+	if (pdev->read_frame != NULL) {
+		/* This can't theoretically happen */
+		Err("Huh? Read frame still in use?\n");
+	}
+	else {
+		if (pdev->full_frames == NULL) {
+			Err("Woops. No frames ready.\n");
+		}
+		else {
+			pdev->read_frame = pdev->full_frames;
+			pdev->full_frames = pdev->full_frames->next;
+			pdev->read_frame->next = NULL;
+		}
+
+		if (pdev->read_frame != NULL) {
+#if PWC_DEBUG
+			Trace(TRACE_SEQUENCE, "Decompressing frame %d\n", pdev->read_frame->sequence);
+#endif
+			/* Decompression is a lenghty process, so it's outside of the lock.
+			   This gives the isoc_handler the opportunity to fill more frames
+			   in the mean time.
+			*/
+			spin_unlock_irqrestore(&pdev->ptrlock, flags);
+			ret = pwc_decompress(pdev);
+			spin_lock_irqsave(&pdev->ptrlock, flags);
+
+			/* We're done with read_buffer, tack it to the end of the empty buffer list */
+			if (pdev->empty_frames == NULL) {
+				pdev->empty_frames = pdev->read_frame;
+				pdev->empty_frames_tail = pdev->empty_frames;
+			}
+			else {
+				pdev->empty_frames_tail->next = pdev->read_frame;
+				pdev->empty_frames_tail = pdev->read_frame;
+			}
+			pdev->read_frame = NULL;
+		}
+	}
+	spin_unlock_irqrestore(&pdev->ptrlock, flags);
+	return ret;
+}
+
+/**
+  \brief Advance pointers of image buffer (after each user request)
+*/
+static inline void pwc_next_image(struct pwc_device *pdev)
+{
+	pdev->image_used[pdev->fill_image] = 0;
+	pdev->fill_image = (pdev->fill_image + 1) % default_mbufs;
+}
+
+
+/* This gets called for the Isochronous pipe (video). This is done in
+ * interrupt time, so it has to be fast, not crash, and not stall. Neat.
+ */
+static void pwc_isoc_handler(struct urb *urb, struct pt_regs *regs)
+{
+	struct pwc_device *pdev;
+	int i, fst, flen;
+	int awake;
+	struct pwc_frame_buf *fbuf;
+	unsigned char *fillptr = NULL, *iso_buf = NULL;
+
+	awake = 0;
+	pdev = (struct pwc_device *)urb->context;
+	if (pdev == NULL) {
+		Err("isoc_handler() called with NULL device?!\n");
+		return;
+	}
+#ifdef PWC_MAGIC
+	if (pdev->magic != PWC_MAGIC) {
+		Err("isoc_handler() called with bad magic!\n");
+		return;
+	}
+#endif
+	if (urb->status == -ENOENT || urb->status == -ECONNRESET) {
+		Trace(TRACE_OPEN, "pwc_isoc_handler(): URB (%p) unlinked %ssynchronuously.\n", urb, urb->status == -ENOENT ? "" : "a");
+		return;
+	}
+	if (urb->status != -EINPROGRESS && urb->status != 0) {
+		const char *errmsg;
+
+		errmsg = "Unknown";
+		switch(urb->status) {
+			case -ENOSR:		errmsg = "Buffer error (overrun)"; break;
+			case -EPIPE:		errmsg = "Stalled (device not responding)"; break;
+			case -EOVERFLOW:	errmsg = "Babble (bad cable?)"; break;
+			case -EPROTO:		errmsg = "Bit-stuff error (bad cable?)"; break;
+			case -EILSEQ:		errmsg = "CRC/Timeout (could be anything)"; break;
+			case -ETIMEDOUT:	errmsg = "NAK (device does not respond)"; break;
+		}
+		Trace(TRACE_FLOW, "pwc_isoc_handler() called with status %d [%s].\n", urb->status, errmsg);
+		/* Give up after a number of contiguous errors on the USB bus. 
+		   Appearantly something is wrong so we simulate an unplug event.
+		 */
+		if (++pdev->visoc_errors > MAX_ISOC_ERRORS)
+		{
+			Info("Too many ISOC errors, bailing out.\n");
+			pdev->error_status = EIO;
+			awake = 1;
+			wake_up_interruptible(&pdev->frameq);
+		}
+		goto handler_end; // ugly, but practical
+	}
+
+	fbuf = pdev->fill_frame;
+	if (fbuf == NULL) {
+		Err("pwc_isoc_handler without valid fill frame.\n");
+		awake = 1;
+		goto handler_end;
+	}
+	else {
+		fillptr = fbuf->data + fbuf->filled;
+	}
+
+	/* Reset ISOC error counter. We did get here, after all. */
+	pdev->visoc_errors = 0;
+
+	/* vsync: 0 = don't copy data
+	          1 = sync-hunt
+	          2 = synched
+	 */
+	/* Compact data */
+	for (i = 0; i < urb->number_of_packets; i++) {
+		fst  = urb->iso_frame_desc[i].status;
+		flen = urb->iso_frame_desc[i].actual_length;
+		iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
+		if (fst == 0) {
+			if (flen > 0) { /* if valid data... */
+				if (pdev->vsync > 0) { /* ...and we are not sync-hunting... */
+					pdev->vsync = 2;
+
+					/* ...copy data to frame buffer, if possible */
+					if (flen + fbuf->filled > pdev->frame_total_size) {
+						Trace(TRACE_FLOW, "Frame buffer overflow (flen = %d, frame_total_size = %d).\n", flen, pdev->frame_total_size);
+						pdev->vsync = 0; /* Hmm, let's wait for an EOF (end-of-frame) */
+						pdev->vframes_error++;
+					}
+					else {
+						memmove(fillptr, iso_buf, flen);
+						fillptr += flen;
+					}
+				}
+				fbuf->filled += flen;
+			} /* ..flen > 0 */
+
+			if (flen < pdev->vlast_packet_size) {
+				/* Shorter packet... We probably have the end of an image-frame; 
+				   wake up read() process and let select()/poll() do something.
+				   Decompression is done in user time over there.
+				 */
+				if (pdev->vsync == 2) {
+					/* The ToUCam Fun CMOS sensor causes the firmware to send 2 or 3 bogus 
+					   frames on the USB wire after an exposure change. This conditition is 
+					   however detected  in the cam and a bit is set in the header.
+					 */
+					if (pdev->type == 730) {
+						unsigned char *ptr = (unsigned char *)fbuf->data;
+						
+						if (ptr[1] == 1 && ptr[0] & 0x10) {
+#if PWC_DEBUG
+							Debug("Hyundai CMOS sensor bug. Dropping frame %d.\n", fbuf->sequence);
+#endif
+							pdev->drop_frames += 2;
+							pdev->vframes_error++;
+						}
+						if ((ptr[0] ^ pdev->vmirror) & 0x01) {
+							if (ptr[0] & 0x01)
+								Info("Snapshot button pressed.\n");
+							else
+								Info("Snapshot button released.\n");
+						}
+						if ((ptr[0] ^ pdev->vmirror) & 0x02) {
+							if (ptr[0] & 0x02)
+								Info("Image is mirrored.\n");
+							else
+								Info("Image is normal.\n");
+						}
+						pdev->vmirror = ptr[0] & 0x03;
+						/* Sometimes the trailer of the 730 is still sent as a 4 byte packet 
+						   after a short frame; this condition is filtered out specifically. A 4 byte
+						   frame doesn't make sense anyway.
+						   So we get either this sequence: 
+						   	drop_bit set -> 4 byte frame -> short frame -> good frame
+						   Or this one:
+						   	drop_bit set -> short frame -> good frame
+						   So we drop either 3 or 2 frames in all!
+						 */
+						if (fbuf->filled == 4)
+							pdev->drop_frames++;
+					}
+
+					/* In case we were instructed to drop the frame, do so silently.
+					   The buffer pointers are not updated either (but the counters are reset below).
+					 */
+					if (pdev->drop_frames > 0)
+						pdev->drop_frames--;
+					else {
+						/* Check for underflow first */
+						if (fbuf->filled < pdev->frame_total_size) {
+							Trace(TRACE_FLOW, "Frame buffer underflow (%d bytes); discarded.\n", fbuf->filled);
+							pdev->vframes_error++;
+						}
+						else {
+							/* Send only once per EOF */
+							awake = 1; /* delay wake_ups */
+
+							/* Find our next frame to fill. This will always succeed, since we
+							 * nick a frame from either empty or full list, but if we had to
+							 * take it from the full list, it means a frame got dropped.
+							 */
+							if (pwc_next_fill_frame(pdev)) {
+								pdev->vframes_dumped++;
+								if ((pdev->vframe_count > FRAME_LOWMARK) && (pwc_trace & TRACE_FLOW)) {
+									if (pdev->vframes_dumped < 20)
+										Trace(TRACE_FLOW, "Dumping frame %d.\n", pdev->vframe_count);
+									if (pdev->vframes_dumped == 20)
+										Trace(TRACE_FLOW, "Dumping frame %d (last message).\n", pdev->vframe_count);
+								}
+							}
+							fbuf = pdev->fill_frame;
+						}
+					} /* !drop_frames */
+					pdev->vframe_count++;
+				}
+				fbuf->filled = 0;
+				fillptr = fbuf->data;
+				pdev->vsync = 1;
+			} /* .. flen < last_packet_size */
+			pdev->vlast_packet_size = flen;
+		} /* ..status == 0 */
+#if PWC_DEBUG
+		/* This is normally not interesting to the user, unless you are really debugging something */
+		else {
+			static int iso_error = 0;
+			iso_error++;
+			if (iso_error < 20)
+				Trace(TRACE_FLOW, "Iso frame %d of USB has error %d\n", i, fst);
+		}
+#endif
+	}
+
+handler_end:
+	if (awake)
+		wake_up_interruptible(&pdev->frameq);
+
+	urb->dev = pdev->udev;
+	i = usb_submit_urb(urb, GFP_ATOMIC);
+	if (i != 0)
+		Err("Error (%d) re-submitting urb in pwc_isoc_handler.\n", i);
+}
+
+
+static int pwc_isoc_init(struct pwc_device *pdev)
+{
+	struct usb_device *udev;
+	struct urb *urb;
+	int i, j, ret;
+
+	struct usb_interface *intf;
+	struct usb_host_interface *idesc = NULL;
+
+	if (pdev == NULL)
+		return -EFAULT;
+	if (pdev->iso_init)
+		return 0;
+	pdev->vsync = 0;
+	udev = pdev->udev;
+
+	/* Get the current alternate interface, adjust packet size */
+	if (!udev->actconfig)
+		return -EFAULT;
+
+	intf = usb_ifnum_to_if(udev, 0);
+	if (intf)
+		idesc = usb_altnum_to_altsetting(intf, pdev->valternate);
+		
+	if (!idesc)
+		return -EFAULT;
+
+	/* Search video endpoint */
+	pdev->vmax_packet_size = -1;
+	for (i = 0; i < idesc->desc.bNumEndpoints; i++)
+		if ((idesc->endpoint[i].desc.bEndpointAddress & 0xF) == pdev->vendpoint) {
+			pdev->vmax_packet_size = le16_to_cpu(idesc->endpoint[i].desc.wMaxPacketSize);
+			break;
+		}
+	
+	if (pdev->vmax_packet_size < 0 || pdev->vmax_packet_size > ISO_MAX_FRAME_SIZE) {
+		Err("Failed to find packet size for video endpoint in current alternate setting.\n");
+		return -ENFILE; /* Odd error, that should be noticeable */
+	}
+
+	/* Set alternate interface */
+	ret = 0;
+	Trace(TRACE_OPEN, "Setting alternate interface %d\n", pdev->valternate);
+	ret = usb_set_interface(pdev->udev, 0, pdev->valternate);
+	if (ret < 0)
+		return ret;
+
+	for (i = 0; i < MAX_ISO_BUFS; i++) {
+		urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
+		if (urb == NULL) {
+			Err("Failed to allocate urb %d\n", i);
+			ret = -ENOMEM;
+			break;
+		}
+		pdev->sbuf[i].urb = urb;
+		Trace(TRACE_MEMORY, "Allocated URB at 0x%p\n", urb);
+	}
+	if (ret) {
+		/* De-allocate in reverse order */
+		while (i >= 0) {
+			if (pdev->sbuf[i].urb != NULL)
+				usb_free_urb(pdev->sbuf[i].urb);
+			pdev->sbuf[i].urb = NULL;
+			i--;
+		}
+		return ret;
+	}
+
+	/* init URB structure */	
+	for (i = 0; i < MAX_ISO_BUFS; i++) {
+		urb = pdev->sbuf[i].urb;
+
+		urb->interval = 1; // devik
+		urb->dev = udev;
+	        urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint);
+		urb->transfer_flags = URB_ISO_ASAP;
+	        urb->transfer_buffer = pdev->sbuf[i].data;
+	        urb->transfer_buffer_length = ISO_BUFFER_SIZE;
+	        urb->complete = pwc_isoc_handler;
+	        urb->context = pdev;
+		urb->start_frame = 0;
+		urb->number_of_packets = ISO_FRAMES_PER_DESC;
+		for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
+			urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
+			urb->iso_frame_desc[j].length = pdev->vmax_packet_size;
+		}
+	}
+
+	/* link */
+	for (i = 0; i < MAX_ISO_BUFS; i++) {
+		ret = usb_submit_urb(pdev->sbuf[i].urb, GFP_KERNEL);
+		if (ret)
+			Err("isoc_init() submit_urb %d failed with error %d\n", i, ret);
+		else
+			Trace(TRACE_MEMORY, "URB 0x%p submitted.\n", pdev->sbuf[i].urb);
+	}
+
+	/* All is done... */
+	pdev->iso_init = 1;
+	Trace(TRACE_OPEN, "<< pwc_isoc_init()\n");
+	return 0;
+}
+
+static void pwc_isoc_cleanup(struct pwc_device *pdev)
+{
+	int i;
+
+	Trace(TRACE_OPEN, ">> pwc_isoc_cleanup()\n");
+	if (pdev == NULL)
+		return;
+
+	/* Unlinking ISOC buffers one by one */
+	for (i = 0; i < MAX_ISO_BUFS; i++) {
+		struct urb *urb;
+
+		urb = pdev->sbuf[i].urb;
+		if (urb != 0) {
+			if (pdev->iso_init) {
+				Trace(TRACE_MEMORY, "Unlinking URB %p\n", urb);
+				usb_kill_urb(urb);
+			}
+			Trace(TRACE_MEMORY, "Freeing URB\n");
+			usb_free_urb(urb);
+			pdev->sbuf[i].urb = NULL;
+		}
+	}
+
+	/* Stop camera, but only if we are sure the camera is still there (unplug
+	   is signalled by EPIPE) 
+	 */
+	if (pdev->error_status && pdev->error_status != EPIPE) {
+		Trace(TRACE_OPEN, "Setting alternate interface 0.\n");
+		usb_set_interface(pdev->udev, 0, 0);
+	}
+
+	pdev->iso_init = 0;
+	Trace(TRACE_OPEN, "<< pwc_isoc_cleanup()\n");
+}
+
+int pwc_try_video_mode(struct pwc_device *pdev, int width, int height, int new_fps, int new_compression, int new_snapshot)
+{
+	int ret, start;
+
+	/* Stop isoc stuff */
+	pwc_isoc_cleanup(pdev);
+	/* Reset parameters */
+	pwc_reset_buffers(pdev);
+	/* Try to set video mode... */
+	start = ret = pwc_set_video_mode(pdev, width, height, new_fps, new_compression, new_snapshot);
+	if (ret) { 
+	        Trace(TRACE_FLOW, "pwc_set_video_mode attempt 1 failed.\n");
+		/* That failed... restore old mode (we know that worked) */
+		start = pwc_set_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot);
+		if (start) {
+		        Trace(TRACE_FLOW, "pwc_set_video_mode attempt 2 failed.\n");
+		}
+	}
+	if (start == 0)
+	{
+		if (pwc_isoc_init(pdev) < 0)
+		{
+			Info("Failed to restart ISOC transfers in pwc_try_video_mode.\n");
+			ret = -EAGAIN; /* let's try again, who knows if it works a second time */
+		}
+	}
+	pdev->drop_frames++; /* try to avoid garbage during switch */
+	return ret; /* Return original error code */
+}
+
+
+/***************************************************************************/
+/* Video4Linux functions */
+
+static int pwc_video_open(struct inode *inode, struct file *file)
+{
+	int i;
+	struct video_device *vdev = video_devdata(file);
+	struct pwc_device *pdev;
+
+	Trace(TRACE_OPEN, ">> video_open called(vdev = 0x%p).\n", vdev);
+	
+	pdev = (struct pwc_device *)vdev->priv;
+	if (pdev == NULL)
+		BUG();
+	if (pdev->vopen)
+		return -EBUSY;
+	
+	down(&pdev->modlock);
+	if (!pdev->usb_init) {
+		Trace(TRACE_OPEN, "Doing first time initialization.\n");
+		pdev->usb_init = 1;
+		
+		if (pwc_trace & TRACE_OPEN)
+		{
+			/* Query sensor type */
+			const char *sensor_type = NULL;
+			int ret;
+
+			ret = pwc_get_cmos_sensor(pdev, &i);
+			if (ret >= 0)
+			{
+				switch(i) {
+				case 0x00:  sensor_type = "Hyundai CMOS sensor"; break;
+				case 0x20:  sensor_type = "Sony CCD sensor + TDA8787"; break;
+				case 0x2E:  sensor_type = "Sony CCD sensor + Exas 98L59"; break;
+				case 0x2F:  sensor_type = "Sony CCD sensor + ADI 9804"; break;
+				case 0x30:  sensor_type = "Sharp CCD sensor + TDA8787"; break;
+				case 0x3E:  sensor_type = "Sharp CCD sensor + Exas 98L59"; break;
+				case 0x3F:  sensor_type = "Sharp CCD sensor + ADI 9804"; break;
+				case 0x40:  sensor_type = "UPA 1021 sensor"; break;
+				case 0x100: sensor_type = "VGA sensor"; break;
+				case 0x101: sensor_type = "PAL MR sensor"; break;
+				default:    sensor_type = "unknown type of sensor"; break;
+				}
+			}
+			if (sensor_type != NULL)
+				Info("This %s camera is equipped with a %s (%d).\n", pdev->vdev->name, sensor_type, i);
+		}
+	}
+
+	/* Turn on camera */
+	if (power_save) {
+		i = pwc_camera_power(pdev, 1);
+		if (i < 0)
+			Info("Failed to restore power to the camera! (%d)\n", i);
+	}
+	/* Set LED on/off time */
+	if (pwc_set_leds(pdev, led_on, led_off) < 0)
+		Info("Failed to set LED on/off time.\n");
+	
+	pwc_construct(pdev); /* set min/max sizes correct */
+
+	/* So far, so good. Allocate memory. */
+	i = pwc_allocate_buffers(pdev);
+	if (i < 0) {
+		Trace(TRACE_OPEN, "Failed to allocate buffer memory.\n");
+		up(&pdev->modlock);
+		return i;
+	}
+	
+	/* Reset buffers & parameters */
+	pwc_reset_buffers(pdev);
+	for (i = 0; i < default_mbufs; i++)
+		pdev->image_used[i] = 0;
+	pdev->vframe_count = 0;
+	pdev->vframes_dumped = 0;
+	pdev->vframes_error = 0;
+	pdev->visoc_errors = 0;
+	pdev->error_status = 0;
+#if PWC_DEBUG
+	pdev->sequence = 0;
+#endif
+	pwc_construct(pdev); /* set min/max sizes correct */
+
+	/* Set some defaults */
+	pdev->vsnapshot = 0;
+
+	/* Start iso pipe for video; first try the last used video size
+	   (or the default one); if that fails try QCIF/10 or QSIF/10;
+	   it that fails too, give up.
+	 */
+	i = pwc_set_video_mode(pdev, pwc_image_sizes[pdev->vsize].x, pwc_image_sizes[pdev->vsize].y, pdev->vframes, pdev->vcompression, 0);
+	if (i)	{
+		Trace(TRACE_OPEN, "First attempt at set_video_mode failed.\n");
+		if (pdev->type == 730 || pdev->type == 740 || pdev->type == 750)
+			i = pwc_set_video_mode(pdev, pwc_image_sizes[PSZ_QSIF].x, pwc_image_sizes[PSZ_QSIF].y, 10, pdev->vcompression, 0);
+		else
+			i = pwc_set_video_mode(pdev, pwc_image_sizes[PSZ_QCIF].x, pwc_image_sizes[PSZ_QCIF].y, 10, pdev->vcompression, 0);
+	}
+	if (i) {
+		Trace(TRACE_OPEN, "Second attempt at set_video_mode failed.\n");
+		up(&pdev->modlock);
+		return i;
+	}
+	
+	i = pwc_isoc_init(pdev);
+	if (i) {
+		Trace(TRACE_OPEN, "Failed to init ISOC stuff = %d.\n", i);
+		up(&pdev->modlock);
+		return i;
+	}
+
+	pdev->vopen++;
+	file->private_data = vdev;
+	up(&pdev->modlock);
+	Trace(TRACE_OPEN, "<< video_open() returns 0.\n");
+	return 0;
+}
+
+/* Note that all cleanup is done in the reverse order as in _open */
+static int pwc_video_close(struct inode *inode, struct file *file)
+{
+	struct video_device *vdev = file->private_data;
+	struct pwc_device *pdev;
+	int i;
+
+	Trace(TRACE_OPEN, ">> video_close called(vdev = 0x%p).\n", vdev);
+
+	pdev = (struct pwc_device *)vdev->priv;
+	if (pdev->vopen == 0)
+		Info("video_close() called on closed device?\n");
+
+	/* Dump statistics, but only if a reasonable amount of frames were
+	   processed (to prevent endless log-entries in case of snap-shot
+	   programs)
+	 */
+	if (pdev->vframe_count > 20)
+		Info("Closing video device: %d frames received, dumped %d frames, %d frames with errors.\n", pdev->vframe_count, pdev->vframes_dumped, pdev->vframes_error);
+
+	switch (pdev->type)
+	 {
+	  case 675:
+	  case 680:
+	  case 690:
+	  case 720:
+	  case 730:
+	  case 740:
+	  case 750:
+/*	    pwc_dec23_exit();	*//* Timon & Kiara */
+	    break;
+	  case 645:
+	  case 646:
+/*	    pwc_dec1_exit(); */
+	    break;
+	 }
+
+	pwc_isoc_cleanup(pdev);
+	pwc_free_buffers(pdev);
+
+	/* Turn off LEDS and power down camera, but only when not unplugged */
+	if (pdev->error_status != EPIPE) {
+		/* Turn LEDs off */
+		if (pwc_set_leds(pdev, 0, 0) < 0)
+			Info("Failed to set LED on/off time.\n");
+		if (power_save) {
+			i = pwc_camera_power(pdev, 0);
+			if (i < 0)
+				Err("Failed to power down camera (%d)\n", i);
+		}
+	}
+	pdev->vopen = 0;
+	Trace(TRACE_OPEN, "<< video_close()\n");
+	return 0;
+}
+
+/*
+ *	FIXME: what about two parallel reads ????
+ *      ANSWER: Not supported. You can't open the device more than once,
+                despite what the V4L1 interface says. First, I don't see
+                the need, second there's no mechanism of alerting the
+                2nd/3rd/... process of events like changing image size.
+                And I don't see the point of blocking that for the
+                2nd/3rd/... process.
+                In multi-threaded environments reading parallel from any
+                device is tricky anyhow.
+ */
+
+static ssize_t pwc_video_read(struct file *file, char __user * buf,
+			  size_t count, loff_t *ppos)
+{
+	struct video_device *vdev = file->private_data;
+	struct pwc_device *pdev;
+	int noblock = file->f_flags & O_NONBLOCK;
+	DECLARE_WAITQUEUE(wait, current);
+        int bytes_to_read;
+
+	Trace(TRACE_READ, "video_read(0x%p, %p, %zu) called.\n", vdev, buf, count);
+	if (vdev == NULL)
+		return -EFAULT;
+	pdev = vdev->priv;
+	if (pdev == NULL)
+		return -EFAULT;
+	if (pdev->error_status)
+		return -pdev->error_status; /* Something happened, report what. */
+
+	/* In case we're doing partial reads, we don't have to wait for a frame */
+	if (pdev->image_read_pos == 0) {
+		/* Do wait queueing according to the (doc)book */
+		add_wait_queue(&pdev->frameq, &wait);
+		while (pdev->full_frames == NULL) {
+			/* Check for unplugged/etc. here */
+			if (pdev->error_status) {
+				remove_wait_queue(&pdev->frameq, &wait);
+				set_current_state(TASK_RUNNING);
+				return -pdev->error_status ;
+			}
+	                if (noblock) {
+	                	remove_wait_queue(&pdev->frameq, &wait);
+	                	set_current_state(TASK_RUNNING);
+	                	return -EWOULDBLOCK;
+	                }
+	                if (signal_pending(current)) {
+	                	remove_wait_queue(&pdev->frameq, &wait);
+	                	set_current_state(TASK_RUNNING);
+	                	return -ERESTARTSYS;
+	                }
+	                schedule();
+	               	set_current_state(TASK_INTERRUPTIBLE);
+		}
+		remove_wait_queue(&pdev->frameq, &wait);
+		set_current_state(TASK_RUNNING);
+                                                                                                                                                                                
+		/* Decompress and release frame */
+		if (pwc_handle_frame(pdev))
+			return -EFAULT;
+	}
+
+	Trace(TRACE_READ, "Copying data to user space.\n");
+	if (pdev->vpalette == VIDEO_PALETTE_RAW)
+		bytes_to_read = pdev->frame_size;
+	else
+ 		bytes_to_read = pdev->view.size;
+
+	/* copy bytes to user space; we allow for partial reads */
+	if (count + pdev->image_read_pos > bytes_to_read)
+		count = bytes_to_read - pdev->image_read_pos;
+	if (copy_to_user(buf, pdev->image_ptr[pdev->fill_image] + pdev->image_read_pos, count))
+		return -EFAULT;
+	pdev->image_read_pos += count;
+	if (pdev->image_read_pos >= bytes_to_read) { /* All data has been read */
+		pdev->image_read_pos = 0;
+		pwc_next_image(pdev);
+	}
+	return count;
+}
+
+static unsigned int pwc_video_poll(struct file *file, poll_table *wait)
+{
+	struct video_device *vdev = file->private_data;
+	struct pwc_device *pdev;
+
+	if (vdev == NULL)
+		return -EFAULT;
+	pdev = vdev->priv;
+	if (pdev == NULL)
+		return -EFAULT;
+
+	poll_wait(file, &pdev->frameq, wait);
+	if (pdev->error_status)
+		return POLLERR;
+	if (pdev->full_frames != NULL) /* we have frames waiting */
+		return (POLLIN | POLLRDNORM);
+
+	return 0;
+}
+
+static int pwc_video_do_ioctl(struct inode *inode, struct file *file,
+			      unsigned int cmd, void *arg)
+{
+	struct video_device *vdev = file->private_data;
+	struct pwc_device *pdev;
+	DECLARE_WAITQUEUE(wait, current);
+
+	if (vdev == NULL)
+		return -EFAULT;
+	pdev = vdev->priv;
+	if (pdev == NULL)
+		return -EFAULT;
+
+	switch (cmd) {
+		/* Query cabapilities */
+		case VIDIOCGCAP:
+		{
+			struct video_capability *caps = arg;
+
+			strcpy(caps->name, vdev->name);
+			caps->type = VID_TYPE_CAPTURE;
+			caps->channels = 1;
+			caps->audios = 1;
+			caps->minwidth  = pdev->view_min.x;
+			caps->minheight = pdev->view_min.y;
+			caps->maxwidth  = pdev->view_max.x;
+			caps->maxheight = pdev->view_max.y;
+			break;
+		}
+
+		/* Channel functions (simulate 1 channel) */
+		case VIDIOCGCHAN:
+		{
+			struct video_channel *v = arg;
+
+			if (v->channel != 0)
+				return -EINVAL;
+			v->flags = 0;
+			v->tuners = 0;
+			v->type = VIDEO_TYPE_CAMERA;
+			strcpy(v->name, "Webcam");
+			return 0;
+		}
+
+		case VIDIOCSCHAN:
+		{
+			/* The spec says the argument is an integer, but
+			   the bttv driver uses a video_channel arg, which
+			   makes sense becasue it also has the norm flag.
+			 */
+			struct video_channel *v = arg;
+			if (v->channel != 0)
+				return -EINVAL;
+			return 0;
+		}
+
+
+		/* Picture functions; contrast etc. */
+		case VIDIOCGPICT:
+		{
+			struct video_picture *p = arg;
+			int val;
+
+			val = pwc_get_brightness(pdev);
+			if (val >= 0)
+				p->brightness = val;
+			else
+				p->brightness = 0xffff;
+			val = pwc_get_contrast(pdev);
+			if (val >= 0)
+				p->contrast = val;
+			else
+				p->contrast = 0xffff;
+			/* Gamma, Whiteness, what's the difference? :) */
+			val = pwc_get_gamma(pdev);
+			if (val >= 0)
+				p->whiteness = val;
+			else
+				p->whiteness = 0xffff;
+			val = pwc_get_saturation(pdev);
+			if (val >= 0)
+				p->colour = val;
+			else
+				p->colour = 0xffff;
+			p->depth = 24;
+			p->palette = pdev->vpalette;
+			p->hue = 0xFFFF; /* N/A */
+			break;
+		}
+
+		case VIDIOCSPICT:
+		{
+			struct video_picture *p = arg;
+			/*
+			 *	FIXME:	Suppose we are mid read
+			        ANSWER: No problem: the firmware of the camera
+			                can handle brightness/contrast/etc
+			                changes at _any_ time, and the palette
+			                is used exactly once in the uncompress
+			                routine.
+			 */
+			pwc_set_brightness(pdev, p->brightness);
+			pwc_set_contrast(pdev, p->contrast);
+			pwc_set_gamma(pdev, p->whiteness);
+			pwc_set_saturation(pdev, p->colour);
+			if (p->palette && p->palette != pdev->vpalette) {
+				switch (p->palette) {
+					case VIDEO_PALETTE_YUV420P:
+					case VIDEO_PALETTE_RAW:
+						pdev->vpalette = p->palette;
+						return pwc_try_video_mode(pdev, pdev->image.x, pdev->image.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot);
+						break;
+					default:
+						return -EINVAL;
+						break;
+				}
+			}
+			break;
+		}
+
+		/* Window/size parameters */		
+		case VIDIOCGWIN:
+		{
+			struct video_window *vw = arg;
+			
+			vw->x = 0;
+			vw->y = 0;
+			vw->width = pdev->view.x;
+			vw->height = pdev->view.y;
+			vw->chromakey = 0;
+			vw->flags = (pdev->vframes << PWC_FPS_SHIFT) | 
+			           (pdev->vsnapshot ? PWC_FPS_SNAPSHOT : 0);
+			break;
+		}
+		
+		case VIDIOCSWIN:
+		{
+			struct video_window *vw = arg;
+			int fps, snapshot, ret;
+
+			fps = (vw->flags & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT;
+			snapshot = vw->flags & PWC_FPS_SNAPSHOT;
+			if (fps == 0)
+				fps = pdev->vframes;
+			if (pdev->view.x == vw->width && pdev->view.y && fps == pdev->vframes && snapshot == pdev->vsnapshot)
+				return 0;
+			ret = pwc_try_video_mode(pdev, vw->width, vw->height, fps, pdev->vcompression, snapshot);
+			if (ret)
+				return ret;
+			break;		
+		}
+		
+		/* We don't have overlay support (yet) */
+		case VIDIOCGFBUF:
+		{
+			struct video_buffer *vb = arg;
+
+			memset(vb,0,sizeof(*vb));
+			break;
+		}
+
+		/* mmap() functions */
+		case VIDIOCGMBUF:
+		{
+			/* Tell the user program how much memory is needed for a mmap() */
+			struct video_mbuf *vm = arg;
+			int i;
+
+			memset(vm, 0, sizeof(*vm));
+			vm->size = default_mbufs * pdev->len_per_image;
+			vm->frames = default_mbufs; /* double buffering should be enough for most applications */
+			for (i = 0; i < default_mbufs; i++)
+				vm->offsets[i] = i * pdev->len_per_image;
+			break;
+		}
+
+		case VIDIOCMCAPTURE:
+		{
+			/* Start capture into a given image buffer (called 'frame' in video_mmap structure) */
+			struct video_mmap *vm = arg;
+
+			Trace(TRACE_READ, "VIDIOCMCAPTURE: %dx%d, frame %d, format %d\n", vm->width, vm->height, vm->frame, vm->format);
+			if (vm->frame < 0 || vm->frame >= default_mbufs)
+				return -EINVAL;
+
+			/* xawtv is nasty. It probes the available palettes
+			   by setting a very small image size and trying
+			   various palettes... The driver doesn't support
+			   such small images, so I'm working around it.
+			 */
+			if (vm->format)
+			{
+				switch (vm->format)
+				{
+					case VIDEO_PALETTE_YUV420P:
+					case VIDEO_PALETTE_RAW:
+						break;
+					default:
+						return -EINVAL;
+						break;
+				}
+			}
+
+			if ((vm->width != pdev->view.x || vm->height != pdev->view.y) &&
+			    (vm->width >= pdev->view_min.x && vm->height >= pdev->view_min.y)) {
+				int ret;
+
+				Trace(TRACE_OPEN, "VIDIOCMCAPTURE: changing size to please xawtv :-(.\n");
+				ret = pwc_try_video_mode(pdev, vm->width, vm->height, pdev->vframes, pdev->vcompression, pdev->vsnapshot);
+				if (ret)
+					return ret;
+			} /* ... size mismatch */
+
+			/* FIXME: should we lock here? */
+			if (pdev->image_used[vm->frame])
+				return -EBUSY;	/* buffer wasn't available. Bummer */
+			pdev->image_used[vm->frame] = 1;
+
+			/* Okay, we're done here. In the SYNC call we wait until a 
+			   frame comes available, then expand image into the given 
+			   buffer.
+			   In contrast to the CPiA cam the Philips cams deliver a
+			   constant stream, almost like a grabber card. Also,
+			   we have separate buffers for the rawdata and the image,
+			   meaning we can nearly always expand into the requested buffer.
+			 */
+			Trace(TRACE_READ, "VIDIOCMCAPTURE done.\n");
+			break;
+		}
+
+		case VIDIOCSYNC:
+		{
+			/* The doc says: "Whenever a buffer is used it should
+			   call VIDIOCSYNC to free this frame up and continue."
+			   
+			   The only odd thing about this whole procedure is 
+			   that MCAPTURE flags the buffer as "in use", and
+			   SYNC immediately unmarks it, while it isn't 
+			   after SYNC that you know that the buffer actually
+			   got filled! So you better not start a CAPTURE in
+			   the same frame immediately (use double buffering). 
+			   This is not a problem for this cam, since it has 
+			   extra intermediate buffers, but a hardware 
+			   grabber card will then overwrite the buffer 
+			   you're working on.
+			 */
+			int *mbuf = arg;
+			int ret;
+
+			Trace(TRACE_READ, "VIDIOCSYNC called (%d).\n", *mbuf);
+
+			/* bounds check */
+			if (*mbuf < 0 || *mbuf >= default_mbufs)
+				return -EINVAL;
+			/* check if this buffer was requested anyway */
+			if (pdev->image_used[*mbuf] == 0)
+				return -EINVAL;
+
+			/* Add ourselves to the frame wait-queue.
+			   
+			   FIXME: needs auditing for safety.
+			   QUESTION: In what respect? I think that using the
+			             frameq is safe now.
+			 */
+			add_wait_queue(&pdev->frameq, &wait);
+			while (pdev->full_frames == NULL) {
+				if (pdev->error_status) {
+					remove_wait_queue(&pdev->frameq, &wait);
+					set_current_state(TASK_RUNNING);
+					return -pdev->error_status;
+				}
+			
+	                	if (signal_pending(current)) {
+	                		remove_wait_queue(&pdev->frameq, &wait);
+		                	set_current_state(TASK_RUNNING);
+		                	return -ERESTARTSYS;
+	        	        }
+	                	schedule();
+		                set_current_state(TASK_INTERRUPTIBLE);
+			}
+			remove_wait_queue(&pdev->frameq, &wait);
+			set_current_state(TASK_RUNNING);
+				
+			/* The frame is ready. Expand in the image buffer 
+			   requested by the user. I don't care if you 
+			   mmap() 5 buffers and request data in this order: 
+			   buffer 4 2 3 0 1 2 3 0 4 3 1 . . .
+			   Grabber hardware may not be so forgiving.
+			 */
+			Trace(TRACE_READ, "VIDIOCSYNC: frame ready.\n");
+			pdev->fill_image = *mbuf; /* tell in which buffer we want the image to be expanded */
+			/* Decompress, etc */
+			ret = pwc_handle_frame(pdev);
+			pdev->image_used[*mbuf] = 0;
+			if (ret)
+				return -EFAULT;
+			break;
+		}
+		
+		case VIDIOCGAUDIO:
+		{
+			struct video_audio *v = arg;
+			
+			strcpy(v->name, "Microphone");
+			v->audio = -1; /* unknown audio minor */
+			v->flags = 0;
+			v->mode = VIDEO_SOUND_MONO;
+			v->volume = 0;
+			v->bass = 0;
+			v->treble = 0;
+			v->balance = 0x8000;
+			v->step = 1;
+			break;	
+		}
+		
+		case VIDIOCSAUDIO:
+		{
+			/* Dummy: nothing can be set */
+			break;
+		}
+		
+		case VIDIOCGUNIT:
+		{
+			struct video_unit *vu = arg;
+			
+			vu->video = pdev->vdev->minor & 0x3F;
+			vu->audio = -1; /* not known yet */
+			vu->vbi = -1;
+			vu->radio = -1;
+			vu->teletext = -1;
+			break;
+		}
+		default:
+			return pwc_ioctl(pdev, cmd, arg);
+	} /* ..switch */
+	return 0;
+}	
+
+static int pwc_video_ioctl(struct inode *inode, struct file *file,
+			   unsigned int cmd, unsigned long arg)
+{
+	return video_usercopy(inode, file, cmd, arg, pwc_video_do_ioctl);
+}
+
+
+static int pwc_video_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct video_device *vdev = file->private_data;
+	struct pwc_device *pdev;
+	unsigned long start = vma->vm_start;
+	unsigned long size  = vma->vm_end-vma->vm_start;
+	unsigned long page, pos;
+	
+	Trace(TRACE_MEMORY, "mmap(0x%p, 0x%lx, %lu) called.\n", vdev, start, size);
+	pdev = vdev->priv;
+	
+	vma->vm_flags |= VM_IO;
+
+	pos = (unsigned long)pdev->image_data;
+	while (size > 0) {
+		page = vmalloc_to_pfn((void *)pos);
+		if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED))
+			return -EAGAIN;
+
+		start += PAGE_SIZE;
+		pos += PAGE_SIZE;
+		if (size > PAGE_SIZE)
+			size -= PAGE_SIZE;
+		else
+			size = 0;
+	}
+
+	return 0;
+}
+
+/***************************************************************************/
+/* USB functions */
+
+/* This function gets called when a new device is plugged in or the usb core
+ * is loaded.
+ */
+
+static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(intf);
+	struct pwc_device *pdev = NULL;
+	int vendor_id, product_id, type_id;
+	int i, hint;
+	int features = 0;
+	int video_nr = -1; /* default: use next available device */
+	char serial_number[30], *name;
+
+	/* Check if we can handle this device */
+	Trace(TRACE_PROBE, "probe() called [%04X %04X], if %d\n", 
+		le16_to_cpu(udev->descriptor.idVendor),
+		le16_to_cpu(udev->descriptor.idProduct),
+		intf->altsetting->desc.bInterfaceNumber);
+
+	/* the interfaces are probed one by one. We are only interested in the
+	   video interface (0) now.
+	   Interface 1 is the Audio Control, and interface 2 Audio itself.
+	 */
+	if (intf->altsetting->desc.bInterfaceNumber > 0)
+		return -ENODEV;
+
+	vendor_id = le16_to_cpu(udev->descriptor.idVendor);
+	product_id = le16_to_cpu(udev->descriptor.idProduct);
+
+	if (vendor_id == 0x0471) {
+		switch (product_id) {
+		case 0x0302:
+			Info("Philips PCA645VC USB webcam detected.\n");
+			name = "Philips 645 webcam";
+			type_id = 645;
+			break;
+		case 0x0303:
+			Info("Philips PCA646VC USB webcam detected.\n");
+			name = "Philips 646 webcam";
+			type_id = 646;
+			break;
+		case 0x0304:
+			Info("Askey VC010 type 2 USB webcam detected.\n");
+			name = "Askey VC010 webcam";
+			type_id = 646;
+			break;
+		case 0x0307:
+			Info("Philips PCVC675K (Vesta) USB webcam detected.\n");
+			name = "Philips 675 webcam";
+			type_id = 675;
+			break;
+		case 0x0308:
+			Info("Philips PCVC680K (Vesta Pro) USB webcam detected.\n");
+			name = "Philips 680 webcam";
+			type_id = 680;
+			break;
+		case 0x030C:
+			Info("Philips PCVC690K (Vesta Pro Scan) USB webcam detected.\n");
+			name = "Philips 690 webcam";
+			type_id = 690;
+			break;
+		case 0x0310:
+			Info("Philips PCVC730K (ToUCam Fun)/PCVC830 (ToUCam II) USB webcam detected.\n");
+			name = "Philips 730 webcam";
+			type_id = 730;
+			break;
+		case 0x0311:
+			Info("Philips PCVC740K (ToUCam Pro)/PCVC840 (ToUCam II) USB webcam detected.\n");
+			name = "Philips 740 webcam";
+			type_id = 740;
+			break;
+		case 0x0312:
+			Info("Philips PCVC750K (ToUCam Pro Scan) USB webcam detected.\n");
+			name = "Philips 750 webcam";
+			type_id = 750;
+			break;
+		case 0x0313:
+			Info("Philips PCVC720K/40 (ToUCam XS) USB webcam detected.\n");
+			name = "Philips 720K/40 webcam";
+			type_id = 720;
+			break;
+		default:
+			return -ENODEV;
+			break;
+		}
+	}
+	else if (vendor_id == 0x069A) {
+		switch(product_id) {
+		case 0x0001:
+			Info("Askey VC010 type 1 USB webcam detected.\n");
+			name = "Askey VC010 webcam";
+			type_id = 645;
+			break;
+		default:
+			return -ENODEV;
+			break;
+		}
+	}
+	else if (vendor_id == 0x046d) {
+		switch(product_id) {
+		case 0x08b0:
+			Info("Logitech QuickCam Pro 3000 USB webcam detected.\n");
+			name = "Logitech QuickCam Pro 3000";
+			type_id = 740; /* CCD sensor */
+			break;
+		case 0x08b1:
+			Info("Logitech QuickCam Notebook Pro USB webcam detected.\n");
+			name = "Logitech QuickCam Notebook Pro";
+			type_id = 740; /* CCD sensor */
+			break;
+		case 0x08b2:
+			Info("Logitech QuickCam 4000 Pro USB webcam detected.\n");
+			name = "Logitech QuickCam Pro 4000";
+			type_id = 740; /* CCD sensor */
+			break;
+		case 0x08b3:
+			Info("Logitech QuickCam Zoom USB webcam detected.\n");
+			name = "Logitech QuickCam Zoom";
+			type_id = 740; /* CCD sensor */
+			break;
+		case 0x08B4:
+			Info("Logitech QuickCam Zoom (new model) USB webcam detected.\n");
+			name = "Logitech QuickCam Zoom";
+			type_id = 740; /* CCD sensor */
+			break;
+		case 0x08b5:
+			Info("Logitech QuickCam Orbit/Sphere USB webcam detected.\n");
+			name = "Logitech QuickCam Orbit";
+			type_id = 740; /* CCD sensor */
+			features |= FEATURE_MOTOR_PANTILT;
+			break;
+		case 0x08b6:
+		case 0x08b7:
+		case 0x08b8:
+			Info("Logitech QuickCam detected (reserved ID).\n");
+			name = "Logitech QuickCam (res.)";
+			type_id = 730; /* Assuming CMOS */
+			break;
+        	default:
+			return -ENODEV;
+        		break;
+        	}
+        }
+	else if (vendor_id == 0x055d) {
+		/* I don't know the difference between the C10 and the C30;
+		   I suppose the difference is the sensor, but both cameras
+		   work equally well with a type_id of 675
+		 */
+		switch(product_id) {
+		case 0x9000:
+			Info("Samsung MPC-C10 USB webcam detected.\n");
+			name = "Samsung MPC-C10";
+			type_id = 675;
+			break;
+		case 0x9001:
+			Info("Samsung MPC-C30 USB webcam detected.\n");
+			name = "Samsung MPC-C30";
+			type_id = 675;
+			break;
+		default:
+			return -ENODEV;
+			break;
+		}
+	}
+	else if (vendor_id == 0x041e) {
+		switch(product_id) {
+		case 0x400c:
+			Info("Creative Labs Webcam 5 detected.\n");
+			name = "Creative Labs Webcam 5";
+			type_id = 730;
+			break;
+		case 0x4011:
+			Info("Creative Labs Webcam Pro Ex detected.\n");
+			name = "Creative Labs Webcam Pro Ex";
+			type_id = 740;
+			break;
+		default:
+			return -ENODEV;
+			break;
+		}
+	}
+	else if (vendor_id == 0x04cc) {
+		switch(product_id) {
+		case 0x8116:
+			Info("Sotec Afina Eye USB webcam detected.\n");
+			name = "Sotec Afina Eye";
+			type_id = 730;
+			break;
+		default:
+			return -ENODEV;
+			break;
+		}
+	}
+	else if (vendor_id == 0x06be) {
+		switch(product_id) {
+		case 0x8116:
+			/* This is essentially the same cam as the Sotec Afina Eye */
+			Info("AME Co. Afina Eye USB webcam detected.\n");
+			name = "AME Co. Afina Eye";
+			type_id = 750;
+			break;
+		default:
+			return -ENODEV;
+			break;
+		}
+	
+	}
+	else if (vendor_id == 0x0d81) {
+		switch(product_id) {
+		case 0x1900:
+			Info("Visionite VCS-UC300 USB webcam detected.\n");
+			name = "Visionite VCS-UC300";
+			type_id = 740; /* CCD sensor */
+			break;
+		case 0x1910:
+			Info("Visionite VCS-UM100 USB webcam detected.\n");
+			name = "Visionite VCS-UM100";
+			type_id = 730; /* CMOS sensor */
+			break;
+		default:
+			return -ENODEV;
+			break;
+		}
+	}
+	else 
+		return -ENODEV; /* Not any of the know types; but the list keeps growing. */
+
+	memset(serial_number, 0, 30);
+	usb_string(udev, udev->descriptor.iSerialNumber, serial_number, 29);
+	Trace(TRACE_PROBE, "Device serial number is %s\n", serial_number);
+
+	if (udev->descriptor.bNumConfigurations > 1)
+		Info("Warning: more than 1 configuration available.\n");
+
+	/* Allocate structure, initialize pointers, mutexes, etc. and link it to the usb_device */
+	pdev = kzalloc(sizeof(struct pwc_device), GFP_KERNEL);
+	if (pdev == NULL) {
+		Err("Oops, could not allocate memory for pwc_device.\n");
+		return -ENOMEM;
+	}
+	pdev->type = type_id;
+	pdev->vsize = default_size;
+	pdev->vframes = default_fps;
+	strcpy(pdev->serial, serial_number);
+	pdev->features = features;
+	if (vendor_id == 0x046D && product_id == 0x08B5)
+	{
+		/* Logitech QuickCam Orbit
+	           The ranges have been determined experimentally; they may differ from cam to cam.
+	           Also, the exact ranges left-right and up-down are different for my cam
+	          */
+		pdev->angle_range.pan_min  = -7000;
+		pdev->angle_range.pan_max  =  7000;
+		pdev->angle_range.tilt_min = -3000;
+		pdev->angle_range.tilt_max =  2500;
+	}
+
+	init_MUTEX(&pdev->modlock);
+	spin_lock_init(&pdev->ptrlock);
+
+	pdev->udev = udev;
+	init_waitqueue_head(&pdev->frameq);
+	pdev->vcompression = pwc_preferred_compression;
+
+	/* Allocate video_device structure */
+	pdev->vdev = video_device_alloc();
+	if (pdev->vdev == 0)
+	{
+		Err("Err, cannot allocate video_device struture. Failing probe.");
+		kfree(pdev);
+		return -ENOMEM;
+	}
+	memcpy(pdev->vdev, &pwc_template, sizeof(pwc_template));
+	strcpy(pdev->vdev->name, name);
+	pdev->vdev->owner = THIS_MODULE;
+	video_set_drvdata(pdev->vdev, pdev);
+
+	pdev->release = le16_to_cpu(udev->descriptor.bcdDevice);
+	Trace(TRACE_PROBE, "Release: %04x\n", pdev->release);
+
+	/* Now search device_hint[] table for a match, so we can hint a node number. */
+	for (hint = 0; hint < MAX_DEV_HINTS; hint++) {
+		if (((device_hint[hint].type == -1) || (device_hint[hint].type == pdev->type)) &&
+		     (device_hint[hint].pdev == NULL)) {
+			/* so far, so good... try serial number */
+			if ((device_hint[hint].serial_number[0] == '*') || !strcmp(device_hint[hint].serial_number, serial_number)) {
+			    	/* match! */
+			    	video_nr = device_hint[hint].device_node;
+			    	Trace(TRACE_PROBE, "Found hint, will try to register as /dev/video%d\n", video_nr);
+			    	break;
+			}
+		}
+	}
+
+	pdev->vdev->release = video_device_release;
+	i = video_register_device(pdev->vdev, VFL_TYPE_GRABBER, video_nr);
+	if (i < 0) {
+		Err("Failed to register as video device (%d).\n", i);
+		video_device_release(pdev->vdev); /* Drip... drip... drip... */
+		kfree(pdev); /* Oops, no memory leaks please */
+		return -EIO;
+	}
+	else {
+		Info("Registered as /dev/video%d.\n", pdev->vdev->minor & 0x3F);
+	}
+
+	/* occupy slot */
+	if (hint < MAX_DEV_HINTS) 
+		device_hint[hint].pdev = pdev;
+
+	Trace(TRACE_PROBE, "probe() function returning struct at 0x%p.\n", pdev);
+	usb_set_intfdata (intf, pdev);
+	return 0;
+}
+
+/* The user janked out the cable... */
+static void usb_pwc_disconnect(struct usb_interface *intf)
+{
+	struct pwc_device *pdev;
+	int hint;
+
+	lock_kernel();
+	pdev = usb_get_intfdata (intf);
+	usb_set_intfdata (intf, NULL);
+	if (pdev == NULL) {
+		Err("pwc_disconnect() Called without private pointer.\n");
+		goto disconnect_out;
+	}
+	if (pdev->udev == NULL) {
+		Err("pwc_disconnect() already called for %p\n", pdev);
+		goto disconnect_out;
+	}
+	if (pdev->udev != interface_to_usbdev(intf)) {
+		Err("pwc_disconnect() Woops: pointer mismatch udev/pdev.\n");
+		goto disconnect_out;
+	}
+#ifdef PWC_MAGIC	
+	if (pdev->magic != PWC_MAGIC) {
+		Err("pwc_disconnect() Magic number failed. Consult your scrolls and try again.\n");
+		goto disconnect_out;
+	}
+#endif
+	
+	/* We got unplugged; this is signalled by an EPIPE error code */
+	if (pdev->vopen) {
+		Info("Disconnected while webcam is in use!\n");
+		pdev->error_status = EPIPE;
+	}
+
+	/* Alert waiting processes */
+	wake_up_interruptible(&pdev->frameq);
+	/* Wait until device is closed */
+	while (pdev->vopen)
+		schedule();
+	/* Device is now closed, so we can safely unregister it */
+	Trace(TRACE_PROBE, "Unregistering video device in disconnect().\n");
+	video_unregister_device(pdev->vdev);
+
+	/* Free memory (don't set pdev to 0 just yet) */
+	kfree(pdev);
+
+disconnect_out:
+	/* search device_hint[] table if we occupy a slot, by any chance */
+	for (hint = 0; hint < MAX_DEV_HINTS; hint++)
+		if (device_hint[hint].pdev == pdev)
+			device_hint[hint].pdev = NULL;
+
+	unlock_kernel();
+}
+
+
+/* *grunt* We have to do atoi ourselves :-( */
+static int pwc_atoi(const char *s)
+{
+	int k = 0;
+
+	k = 0;
+	while (*s != '\0' && *s >= '0' && *s <= '9') {
+		k = 10 * k + (*s - '0');
+		s++;
+	}
+	return k;
+}
+
+
+/* 
+ * Initialization code & module stuff 
+ */
+
+static char size[10];
+static int fps = 0;
+static int fbufs = 0;
+static int mbufs = 0;
+static int trace = -1;
+static int compression = -1;
+static int leds[2] = { -1, -1 };
+static char *dev_hint[MAX_DEV_HINTS] = { };
+
+module_param_string(size, size, sizeof(size), 0);
+MODULE_PARM_DESC(size, "Initial image size. One of sqcif, qsif, qcif, sif, cif, vga");
+module_param(fps, int, 0000);
+MODULE_PARM_DESC(fps, "Initial frames per second. Varies with model, useful range 5-30");
+module_param(fbufs, int, 0000);
+MODULE_PARM_DESC(fbufs, "Number of internal frame buffers to reserve");
+module_param(mbufs, int, 0000);
+MODULE_PARM_DESC(mbufs, "Number of external (mmap()ed) image buffers");
+module_param(trace, int, 0000);
+MODULE_PARM_DESC(trace, "For debugging purposes");
+module_param(power_save, bool, 0000);
+MODULE_PARM_DESC(power_save, "Turn power save feature in camera on or off");
+module_param(compression, int, 0000);
+MODULE_PARM_DESC(compression, "Preferred compression quality. Range 0 (uncompressed) to 3 (high compression)");
+module_param_array(leds, int, NULL, 0000);
+MODULE_PARM_DESC(leds, "LED on,off time in milliseconds");
+module_param_array(dev_hint, charp, NULL, 0000);
+MODULE_PARM_DESC(dev_hint, "Device node hints");
+
+MODULE_DESCRIPTION("Philips & OEM USB webcam driver");
+MODULE_AUTHOR("Luc Saillard <luc@saillard.org>");
+MODULE_LICENSE("GPL");
+
+static int __init usb_pwc_init(void)
+{
+	int i, sz;
+	char *sizenames[PSZ_MAX] = { "sqcif", "qsif", "qcif", "sif", "cif", "vga" };
+
+	Info("Philips webcam module version " PWC_VERSION " loaded.\n");
+	Info("Supports Philips PCA645/646, PCVC675/680/690, PCVC720[40]/730/740/750 & PCVC830/840.\n");
+	Info("Also supports the Askey VC010, various Logitech Quickcams, Samsung MPC-C10 and MPC-C30,\n");
+	Info("the Creative WebCam 5 & Pro Ex, SOTEC Afina Eye and Visionite VCS-UC300 and VCS-UM100.\n");
+
+	if (fps) {
+		if (fps < 4 || fps > 30) {
+			Err("Framerate out of bounds (4-30).\n");
+			return -EINVAL;
+		}
+		default_fps = fps;
+		Info("Default framerate set to %d.\n", default_fps);
+	}
+
+	if (size[0]) {
+		/* string; try matching with array */
+		for (sz = 0; sz < PSZ_MAX; sz++) {
+			if (!strcmp(sizenames[sz], size)) { /* Found! */
+				default_size = sz;
+				break;
+			}
+		}
+		if (sz == PSZ_MAX) {
+			Err("Size not recognized; try size=[sqcif | qsif | qcif | sif | cif | vga].\n");
+			return -EINVAL;
+		}
+		Info("Default image size set to %s [%dx%d].\n", sizenames[default_size], pwc_image_sizes[default_size].x, pwc_image_sizes[default_size].y);
+	}
+	if (mbufs) {
+		if (mbufs < 1 || mbufs > MAX_IMAGES) {
+			Err("Illegal number of mmap() buffers; use a number between 1 and %d.\n", MAX_IMAGES);
+			return -EINVAL;
+		}
+		default_mbufs = mbufs;
+		Info("Number of image buffers set to %d.\n", default_mbufs);
+	}
+	if (fbufs) {
+		if (fbufs < 2 || fbufs > MAX_FRAMES) {
+			Err("Illegal number of frame buffers; use a number between 2 and %d.\n", MAX_FRAMES);
+			return -EINVAL;
+		}
+		default_fbufs = fbufs;
+		Info("Number of frame buffers set to %d.\n", default_fbufs);
+	}
+	if (trace >= 0) {
+		Info("Trace options: 0x%04x\n", trace);
+		pwc_trace = trace;
+	}
+	if (compression >= 0) {
+		if (compression > 3) {
+			Err("Invalid compression setting; use a number between 0 (uncompressed) and 3 (high).\n");
+			return -EINVAL;
+		}
+		pwc_preferred_compression = compression;
+		Info("Preferred compression set to %d.\n", pwc_preferred_compression);
+	}
+	if (power_save)
+		Info("Enabling power save on open/close.\n");
+	if (leds[0] >= 0)
+		led_on = leds[0];
+	if (leds[1] >= 0)
+		led_off = leds[1];
+
+	/* Big device node whoopla. Basically, it allows you to assign a
+	   device node (/dev/videoX) to a camera, based on its type
+	   & serial number. The format is [type[.serialnumber]:]node.
+
+	   Any camera that isn't matched by these rules gets the next
+	   available free device node.
+	 */
+	for (i = 0; i < MAX_DEV_HINTS; i++) {
+		char *s, *colon, *dot;
+
+		/* This loop also initializes the array */
+		device_hint[i].pdev = NULL;
+		s = dev_hint[i];
+		if (s != NULL && *s != '\0') {
+			device_hint[i].type = -1; /* wildcard */
+			strcpy(device_hint[i].serial_number, "*");
+
+			/* parse string: chop at ':' & '/' */
+			colon = dot = s;
+			while (*colon != '\0' && *colon != ':')
+				colon++;
+			while (*dot != '\0' && *dot != '.')
+				dot++;
+			/* Few sanity checks */
+			if (*dot != '\0' && dot > colon) {
+				Err("Malformed camera hint: the colon must be after the dot.\n");
+				return -EINVAL;
+			}
+
+			if (*colon == '\0') {
+				/* No colon */
+				if (*dot != '\0') {
+					Err("Malformed camera hint: no colon + device node given.\n");
+					return -EINVAL;
+				}
+				else {
+					/* No type or serial number specified, just a number. */
+					device_hint[i].device_node = pwc_atoi(s);
+				}
+			}
+			else {
+				/* There's a colon, so we have at least a type and a device node */
+				device_hint[i].type = pwc_atoi(s);
+				device_hint[i].device_node = pwc_atoi(colon + 1);
+				if (*dot != '\0') {
+					/* There's a serial number as well */
+					int k;
+					
+					dot++;
+					k = 0;
+					while (*dot != ':' && k < 29) {
+						device_hint[i].serial_number[k++] = *dot;
+						dot++;
+					}
+					device_hint[i].serial_number[k] = '\0';
+				}
+			}
+#if PWC_DEBUG		
+			Debug("device_hint[%d]:\n", i);
+			Debug("  type    : %d\n", device_hint[i].type);
+			Debug("  serial# : %s\n", device_hint[i].serial_number);
+			Debug("  node    : %d\n", device_hint[i].device_node);
+#endif			
+		}
+		else
+			device_hint[i].type = 0; /* not filled */
+	} /* ..for MAX_DEV_HINTS */
+
+ 	Trace(TRACE_PROBE, "Registering driver at address 0x%p.\n", &pwc_driver);
+	return usb_register(&pwc_driver);
+}
+
+static void __exit usb_pwc_exit(void)
+{
+	Trace(TRACE_MODULE, "Deregistering driver.\n");
+	usb_deregister(&pwc_driver);
+	Info("Philips webcam module removed.\n");
+}
+
+module_init(usb_pwc_init);
+module_exit(usb_pwc_exit);
+
diff --git a/drivers/media/video/pwc/pwc-ioctl.h b/drivers/media/video/pwc/pwc-ioctl.h
new file mode 100644
index 000000000000..5f9cb08bc02e
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-ioctl.h
@@ -0,0 +1,292 @@
+#ifndef PWC_IOCTL_H
+#define PWC_IOCTL_H
+
+/* (C) 2001-2004 Nemosoft Unv.
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/* This is pwc-ioctl.h belonging to PWC 8.12.1
+   It contains structures and defines to communicate from user space
+   directly to the driver.
+ */
+
+/*
+   Changes
+   2001/08/03  Alvarado   Added ioctl constants to access methods for
+                          changing white balance and red/blue gains
+   2002/12/15  G. H. Fernandez-Toribio   VIDIOCGREALSIZE
+   2003/12/13  Nemosft Unv. Some modifications to make interfacing to
+               PWCX easier
+ */
+
+/* These are private ioctl() commands, specific for the Philips webcams.
+   They contain functions not found in other webcams, and settings not
+   specified in the Video4Linux API.
+
+   The #define names are built up like follows:
+   VIDIOC		VIDeo IOCtl prefix
+         PWC		Philps WebCam
+            G           optional: Get
+            S           optional: Set
+             ... 	the function
+ */
+
+
+ /* Enumeration of image sizes */
+#define PSZ_SQCIF	0x00
+#define PSZ_QSIF	0x01
+#define PSZ_QCIF	0x02
+#define PSZ_SIF		0x03
+#define PSZ_CIF		0x04
+#define PSZ_VGA		0x05
+#define PSZ_MAX		6
+
+
+/* The frame rate is encoded in the video_window.flags parameter using
+   the upper 16 bits, since some flags are defined nowadays. The following
+   defines provide a mask and shift to filter out this value.
+
+   In 'Snapshot' mode the camera freezes its automatic exposure and colour
+   balance controls.
+ */
+#define PWC_FPS_SHIFT		16
+#define PWC_FPS_MASK		0x00FF0000
+#define PWC_FPS_FRMASK		0x003F0000
+#define PWC_FPS_SNAPSHOT	0x00400000
+
+
+/* structure for transferring x & y coordinates */
+struct pwc_coord
+{
+	int x, y;		/* guess what */
+	int size;		/* size, or offset */
+};
+
+
+/* Used with VIDIOCPWCPROBE */
+struct pwc_probe
+{
+	char name[32];
+	int type;
+};
+
+struct pwc_serial
+{
+	char serial[30];	/* String with serial number. Contains terminating 0 */
+};
+	
+/* pwc_whitebalance.mode values */
+#define PWC_WB_INDOOR		0
+#define PWC_WB_OUTDOOR		1
+#define PWC_WB_FL		2
+#define PWC_WB_MANUAL		3
+#define PWC_WB_AUTO		4
+
+/* Used with VIDIOCPWC[SG]AWB (Auto White Balance). 
+   Set mode to one of the PWC_WB_* values above.
+   *red and *blue are the respective gains of these colour components inside 
+   the camera; range 0..65535
+   When 'mode' == PWC_WB_MANUAL, 'manual_red' and 'manual_blue' are set or read; 
+   otherwise undefined.
+   'read_red' and 'read_blue' are read-only.
+*/   
+struct pwc_whitebalance
+{
+	int mode;
+	int manual_red, manual_blue;	/* R/W */
+	int read_red, read_blue;	/* R/O */
+};
+
+/* 
+   'control_speed' and 'control_delay' are used in automatic whitebalance mode,
+   and tell the camera how fast it should react to changes in lighting, and 
+   with how much delay. Valid values are 0..65535.
+*/
+struct pwc_wb_speed
+{
+	int control_speed;
+	int control_delay;
+
+};
+
+/* Used with VIDIOCPWC[SG]LED */
+struct pwc_leds
+{
+	int led_on;			/* Led on-time; range = 0..25000 */
+	int led_off;			/* Led off-time; range = 0..25000  */
+};
+
+/* Image size (used with GREALSIZE) */
+struct pwc_imagesize
+{
+	int width;
+	int height;
+};
+
+/* Defines and structures for Motorized Pan & Tilt */
+#define PWC_MPT_PAN		0x01
+#define PWC_MPT_TILT		0x02
+#define PWC_MPT_TIMEOUT		0x04 /* for status */
+
+/* Set angles; when absolute != 0, the angle is absolute and the 
+   driver calculates the relative offset for you. This can only
+   be used with VIDIOCPWCSANGLE; VIDIOCPWCGANGLE always returns
+   absolute angles.
+ */   
+struct pwc_mpt_angles
+{
+	int absolute;		/* write-only */
+	int pan;		/* degrees * 100 */
+	int tilt;		/* degress * 100 */
+};
+
+/* Range of angles of the camera, both horizontally and vertically.
+ */
+struct pwc_mpt_range
+{
+	int pan_min, pan_max;		/* degrees * 100 */
+	int tilt_min, tilt_max;
+};
+
+struct pwc_mpt_status
+{
+	int status;
+	int time_pan;
+	int time_tilt;
+};
+
+
+/* This is used for out-of-kernel decompression. With it, you can get
+   all the necessary information to initialize and use the decompressor
+   routines in standalone applications.
+ */   
+struct pwc_video_command
+{
+	int type;		/* camera type (645, 675, 730, etc.) */
+	int release;		/* release number */
+
+        int size;		/* one of PSZ_* */
+        int alternate;
+	int command_len;	/* length of USB video command */
+	unsigned char command_buf[13];	/* Actual USB video command */
+	int bandlength;		/* >0 = compressed */
+	int frame_size;		/* Size of one (un)compressed frame */
+};
+
+/* Flags for PWCX subroutines. Not all modules honour all flags. */
+#define PWCX_FLAG_PLANAR	0x0001
+#define PWCX_FLAG_BAYER		0x0008
+
+
+/* IOCTL definitions */
+
+ /* Restore user settings */
+#define VIDIOCPWCRUSER		_IO('v', 192)
+ /* Save user settings */
+#define VIDIOCPWCSUSER		_IO('v', 193)
+ /* Restore factory settings */
+#define VIDIOCPWCFACTORY	_IO('v', 194)
+
+ /* You can manipulate the compression factor. A compression preference of 0
+    means use uncompressed modes when available; 1 is low compression, 2 is
+    medium and 3 is high compression preferred. Of course, the higher the
+    compression, the lower the bandwidth used but more chance of artefacts
+    in the image. The driver automatically chooses a higher compression when
+    the preferred mode is not available.
+  */
+ /* Set preferred compression quality (0 = uncompressed, 3 = highest compression) */
+#define VIDIOCPWCSCQUAL		_IOW('v', 195, int)
+ /* Get preferred compression quality */
+#define VIDIOCPWCGCQUAL		_IOR('v', 195, int)
+
+
+/* Retrieve serial number of camera */
+#define VIDIOCPWCGSERIAL	_IOR('v', 198, struct pwc_serial)
+
+ /* This is a probe function; since so many devices are supported, it
+    becomes difficult to include all the names in programs that want to
+    check for the enhanced Philips stuff. So in stead, try this PROBE;
+    it returns a structure with the original name, and the corresponding
+    Philips type.
+    To use, fill the structure with zeroes, call PROBE and if that succeeds,
+    compare the name with that returned from VIDIOCGCAP; they should be the
+    same. If so, you can be assured it is a Philips (OEM) cam and the type
+    is valid.
+ */
+#define VIDIOCPWCPROBE		_IOR('v', 199, struct pwc_probe)
+
+ /* Set AGC (Automatic Gain Control); int < 0 = auto, 0..65535 = fixed */
+#define VIDIOCPWCSAGC		_IOW('v', 200, int)
+ /* Get AGC; int < 0 = auto; >= 0 = fixed, range 0..65535 */
+#define VIDIOCPWCGAGC		_IOR('v', 200, int)
+ /* Set shutter speed; int < 0 = auto; >= 0 = fixed, range 0..65535 */
+#define VIDIOCPWCSSHUTTER	_IOW('v', 201, int)
+
+ /* Color compensation (Auto White Balance) */
+#define VIDIOCPWCSAWB           _IOW('v', 202, struct pwc_whitebalance)
+#define VIDIOCPWCGAWB           _IOR('v', 202, struct pwc_whitebalance)
+
+ /* Auto WB speed */
+#define VIDIOCPWCSAWBSPEED	_IOW('v', 203, struct pwc_wb_speed)
+#define VIDIOCPWCGAWBSPEED	_IOR('v', 203, struct pwc_wb_speed)
+
+ /* LEDs on/off/blink; int range 0..65535 */
+#define VIDIOCPWCSLED           _IOW('v', 205, struct pwc_leds)
+#define VIDIOCPWCGLED           _IOR('v', 205, struct pwc_leds)
+
+  /* Contour (sharpness); int < 0 = auto, 0..65536 = fixed */
+#define VIDIOCPWCSCONTOUR	_IOW('v', 206, int)
+#define VIDIOCPWCGCONTOUR	_IOR('v', 206, int)
+
+  /* Backlight compensation; 0 = off, otherwise on */
+#define VIDIOCPWCSBACKLIGHT	_IOW('v', 207, int)
+#define VIDIOCPWCGBACKLIGHT	_IOR('v', 207, int)
+
+  /* Flickerless mode; = 0 off, otherwise on */
+#define VIDIOCPWCSFLICKER	_IOW('v', 208, int)
+#define VIDIOCPWCGFLICKER	_IOR('v', 208, int)  
+
+  /* Dynamic noise reduction; 0 off, 3 = high noise reduction */
+#define VIDIOCPWCSDYNNOISE	_IOW('v', 209, int)
+#define VIDIOCPWCGDYNNOISE	_IOR('v', 209, int)
+
+ /* Real image size as used by the camera; tells you whether or not there's a gray border around the image */
+#define VIDIOCPWCGREALSIZE	_IOR('v', 210, struct pwc_imagesize)
+
+ /* Motorized pan & tilt functions */ 
+#define VIDIOCPWCMPTRESET	_IOW('v', 211, int)
+#define VIDIOCPWCMPTGRANGE	_IOR('v', 211, struct pwc_mpt_range)
+#define VIDIOCPWCMPTSANGLE	_IOW('v', 212, struct pwc_mpt_angles)
+#define VIDIOCPWCMPTGANGLE	_IOR('v', 212, struct pwc_mpt_angles)
+#define VIDIOCPWCMPTSTATUS	_IOR('v', 213, struct pwc_mpt_status)
+
+ /* Get the USB set-video command; needed for initializing libpwcx */
+#define VIDIOCPWCGVIDCMD	_IOR('v', 215, struct pwc_video_command)
+struct pwc_table_init_buffer {
+   int len;
+   char *buffer;
+
+};
+#define VIDIOCPWCGVIDTABLE	_IOR('v', 216, struct pwc_table_init_buffer)
+
+#endif
diff --git a/drivers/media/video/pwc/pwc-kiara.c b/drivers/media/video/pwc/pwc-kiara.c
new file mode 100644
index 000000000000..c498c68bace1
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-kiara.c
@@ -0,0 +1,318 @@
+/* Linux driver for Philips webcam
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+
+/* This tables contains entries for the 730/740/750 (Kiara) camera, with
+   4 different qualities (no compression, low, medium, high).
+   It lists the bandwidth requirements for said mode by its alternate interface
+   number. An alternate of 0 means that the mode is unavailable.
+
+   There are 6 * 4 * 4 entries:
+     6 different resolutions subqcif, qsif, qcif, sif, cif, vga
+     6 framerates: 5, 10, 15, 20, 25, 30
+     4 compression modi: none, low, medium, high
+
+   When an uncompressed mode is not available, the next available compressed mode
+   will be chosen (unless the decompressor is absent). Sometimes there are only
+   1 or 2 compressed modes available; in that case entries are duplicated.
+*/
+
+
+#include "pwc-kiara.h"
+#include "pwc-uncompress.h"
+
+const struct Kiara_table_entry Kiara_table[PSZ_MAX][6][4] =
+{
+   /* SQCIF */
+   {
+      /* 5 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 10 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 15 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 20 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 25 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+   },
+   /* QSIF */
+   {
+      /* 5 fps */
+      {
+         {1, 146,    0, {0x1D, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x92, 0x00, 0x80}},
+         {1, 146,    0, {0x1D, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x92, 0x00, 0x80}},
+         {1, 146,    0, {0x1D, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x92, 0x00, 0x80}},
+         {1, 146,    0, {0x1D, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x92, 0x00, 0x80}},
+      },
+      /* 10 fps */
+      {
+         {2, 291,    0, {0x1C, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x23, 0x01, 0x80}},
+         {1, 192,  630, {0x14, 0xF4, 0x30, 0x13, 0xA9, 0x12, 0xE1, 0x17, 0x08, 0xC0, 0x00, 0x80}},
+         {1, 192,  630, {0x14, 0xF4, 0x30, 0x13, 0xA9, 0x12, 0xE1, 0x17, 0x08, 0xC0, 0x00, 0x80}},
+         {1, 192,  630, {0x14, 0xF4, 0x30, 0x13, 0xA9, 0x12, 0xE1, 0x17, 0x08, 0xC0, 0x00, 0x80}},
+      },
+      /* 15 fps */
+      {
+         {3, 437,    0, {0x1B, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0xB5, 0x01, 0x80}},
+         {2, 292,  640, {0x13, 0xF4, 0x30, 0x13, 0xF7, 0x13, 0x2F, 0x13, 0x20, 0x24, 0x01, 0x80}},
+         {2, 292,  640, {0x13, 0xF4, 0x30, 0x13, 0xF7, 0x13, 0x2F, 0x13, 0x20, 0x24, 0x01, 0x80}},
+         {1, 192,  420, {0x13, 0xF4, 0x30, 0x0D, 0x1B, 0x0C, 0x53, 0x1E, 0x18, 0xC0, 0x00, 0x80}},
+      },
+      /* 20 fps */
+      {
+         {4, 589,    0, {0x1A, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x4D, 0x02, 0x80}},
+         {3, 448,  730, {0x12, 0xF4, 0x30, 0x16, 0xC9, 0x16, 0x01, 0x0E, 0x18, 0xC0, 0x01, 0x80}},
+         {2, 292,  476, {0x12, 0xF4, 0x30, 0x0E, 0xD8, 0x0E, 0x10, 0x19, 0x18, 0x24, 0x01, 0x80}},
+         {1, 192,  312, {0x12, 0xF4, 0x50, 0x09, 0xB3, 0x08, 0xEB, 0x1E, 0x18, 0xC0, 0x00, 0x80}},
+      },
+      /* 25 fps */
+      {
+         {5, 703,    0, {0x19, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0xBF, 0x02, 0x80}},
+         {3, 447,  610, {0x11, 0xF4, 0x30, 0x13, 0x0B, 0x12, 0x43, 0x14, 0x28, 0xBF, 0x01, 0x80}},
+         {2, 292,  398, {0x11, 0xF4, 0x50, 0x0C, 0x6C, 0x0B, 0xA4, 0x1E, 0x28, 0x24, 0x01, 0x80}},
+         {1, 193,  262, {0x11, 0xF4, 0x50, 0x08, 0x23, 0x07, 0x5B, 0x1E, 0x28, 0xC1, 0x00, 0x80}},
+      },
+      /* 30 fps */
+      {
+         {8, 874,    0, {0x18, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x6A, 0x03, 0x80}},
+         {5, 704,  730, {0x10, 0xF4, 0x30, 0x16, 0xC9, 0x16, 0x01, 0x0E, 0x28, 0xC0, 0x02, 0x80}},
+         {3, 448,  492, {0x10, 0xF4, 0x30, 0x0F, 0x5D, 0x0E, 0x95, 0x15, 0x28, 0xC0, 0x01, 0x80}},
+         {2, 292,  320, {0x10, 0xF4, 0x50, 0x09, 0xFB, 0x09, 0x33, 0x1E, 0x28, 0x24, 0x01, 0x80}},
+      },
+   },
+   /* QCIF */
+   {
+      /* 5 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 10 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 15 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 20 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 25 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+   },
+   /* SIF */
+   {
+      /* 5 fps */
+      {
+         {4, 582,    0, {0x0D, 0xF4, 0x30, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x46, 0x02, 0x80}},
+         {3, 387, 1276, {0x05, 0xF4, 0x30, 0x27, 0xD8, 0x26, 0x48, 0x03, 0x10, 0x83, 0x01, 0x80}},
+         {2, 291,  960, {0x05, 0xF4, 0x30, 0x1D, 0xF2, 0x1C, 0x62, 0x04, 0x10, 0x23, 0x01, 0x80}},
+         {1, 191,  630, {0x05, 0xF4, 0x50, 0x13, 0xA9, 0x12, 0x19, 0x05, 0x18, 0xBF, 0x00, 0x80}},
+      },
+      /* 10 fps */
+      {
+         {0, },
+         {6, 775, 1278, {0x04, 0xF4, 0x30, 0x27, 0xE8, 0x26, 0x58, 0x05, 0x30, 0x07, 0x03, 0x80}},
+         {3, 447,  736, {0x04, 0xF4, 0x30, 0x16, 0xFB, 0x15, 0x6B, 0x05, 0x28, 0xBF, 0x01, 0x80}},
+         {2, 292,  480, {0x04, 0xF4, 0x70, 0x0E, 0xF9, 0x0D, 0x69, 0x09, 0x28, 0x24, 0x01, 0x80}},
+      },
+      /* 15 fps */
+      {
+         {0, },
+         {9, 955, 1050, {0x03, 0xF4, 0x30, 0x20, 0xCF, 0x1F, 0x3F, 0x06, 0x48, 0xBB, 0x03, 0x80}},
+         {4, 592,  650, {0x03, 0xF4, 0x30, 0x14, 0x44, 0x12, 0xB4, 0x08, 0x30, 0x50, 0x02, 0x80}},
+         {3, 448,  492, {0x03, 0xF4, 0x50, 0x0F, 0x52, 0x0D, 0xC2, 0x09, 0x38, 0xC0, 0x01, 0x80}},
+      },
+      /* 20 fps */
+      {
+         {0, },
+         {9, 958,  782, {0x02, 0xF4, 0x30, 0x18, 0x6A, 0x16, 0xDA, 0x0B, 0x58, 0xBE, 0x03, 0x80}},
+         {5, 703,  574, {0x02, 0xF4, 0x50, 0x11, 0xE7, 0x10, 0x57, 0x0B, 0x40, 0xBF, 0x02, 0x80}},
+         {3, 446,  364, {0x02, 0xF4, 0x90, 0x0B, 0x5C, 0x09, 0xCC, 0x0E, 0x38, 0xBE, 0x01, 0x80}},
+      },
+      /* 25 fps */
+      {
+         {0, },
+         {9, 958,  654, {0x01, 0xF4, 0x30, 0x14, 0x66, 0x12, 0xD6, 0x0B, 0x50, 0xBE, 0x03, 0x80}},
+         {6, 776,  530, {0x01, 0xF4, 0x50, 0x10, 0x8C, 0x0E, 0xFC, 0x0C, 0x48, 0x08, 0x03, 0x80}},
+         {4, 592,  404, {0x01, 0xF4, 0x70, 0x0C, 0x96, 0x0B, 0x06, 0x0B, 0x48, 0x50, 0x02, 0x80}},
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {9, 957,  526, {0x00, 0xF4, 0x50, 0x10, 0x68, 0x0E, 0xD8, 0x0D, 0x58, 0xBD, 0x03, 0x80}},
+         {6, 775,  426, {0x00, 0xF4, 0x70, 0x0D, 0x48, 0x0B, 0xB8, 0x0F, 0x50, 0x07, 0x03, 0x80}},
+         {4, 590,  324, {0x00, 0x7A, 0x88, 0x0A, 0x1C, 0x08, 0xB4, 0x0E, 0x50, 0x4E, 0x02, 0x80}},
+      },
+   },
+   /* CIF */
+   {
+      /* 5 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 10 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 15 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 20 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 25 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+   },
+   /* VGA */
+   {
+      /* 5 fps */
+      {
+         {0, },
+         {6, 773, 1272, {0x25, 0xF4, 0x30, 0x27, 0xB6, 0x24, 0x96, 0x02, 0x30, 0x05, 0x03, 0x80}},
+         {4, 592,  976, {0x25, 0xF4, 0x50, 0x1E, 0x78, 0x1B, 0x58, 0x03, 0x30, 0x50, 0x02, 0x80}},
+         {3, 448,  738, {0x25, 0xF4, 0x90, 0x17, 0x0C, 0x13, 0xEC, 0x04, 0x30, 0xC0, 0x01, 0x80}},
+      },
+      /* 10 fps */
+      {
+         {0, },
+         {9, 956,  788, {0x24, 0xF4, 0x70, 0x18, 0x9C, 0x15, 0x7C, 0x03, 0x48, 0xBC, 0x03, 0x80}},
+         {6, 776,  640, {0x24, 0xF4, 0xB0, 0x13, 0xFC, 0x11, 0x2C, 0x04, 0x48, 0x08, 0x03, 0x80}},
+         {4, 592,  488, {0x24, 0x7A, 0xE8, 0x0F, 0x3C, 0x0C, 0x6C, 0x06, 0x48, 0x50, 0x02, 0x80}},
+      },
+      /* 15 fps */
+      {
+         {0, },
+         {9, 957,  526, {0x23, 0x7A, 0xE8, 0x10, 0x68, 0x0D, 0x98, 0x06, 0x58, 0xBD, 0x03, 0x80}},
+         {9, 957,  526, {0x23, 0x7A, 0xE8, 0x10, 0x68, 0x0D, 0x98, 0x06, 0x58, 0xBD, 0x03, 0x80}},
+         {8, 895,  492, {0x23, 0x7A, 0xE8, 0x0F, 0x5D, 0x0C, 0x8D, 0x06, 0x58, 0x7F, 0x03, 0x80}},
+      },
+      /* 20 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 25 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+   },
+};
+
diff --git a/drivers/media/video/pwc/pwc-kiara.h b/drivers/media/video/pwc/pwc-kiara.h
new file mode 100644
index 000000000000..12929abbb1f0
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-kiara.h
@@ -0,0 +1,45 @@
+/* Linux driver for Philips webcam
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/* Entries for the Kiara (730/740/750) camera */
+
+#ifndef PWC_KIARA_H
+#define PWC_KIARA_H
+
+#include "pwc-ioctl.h"
+
+struct Kiara_table_entry
+{
+	char alternate;			/* USB alternate interface */
+	unsigned short packetsize;	/* Normal packet size */
+	unsigned short bandlength;	/* Bandlength when decompressing */
+	unsigned char mode[12];		/* precomputed mode settings for cam */
+};
+
+const extern struct Kiara_table_entry Kiara_table[PSZ_MAX][6][4];
+const extern unsigned int KiaraRomTable[8][2][16][8];
+
+#endif
+
+
diff --git a/drivers/media/video/pwc/pwc-misc.c b/drivers/media/video/pwc/pwc-misc.c
new file mode 100644
index 000000000000..b7a4bd3524c7
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-misc.c
@@ -0,0 +1,140 @@
+/* Linux driver for Philips webcam 
+   Various miscellaneous functions and tables.
+   (C) 1999-2003 Nemosoft Unv.
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <linux/slab.h>
+
+#include "pwc.h"
+
+struct pwc_coord pwc_image_sizes[PSZ_MAX] =
+{
+	{ 128,  96, 0 },
+	{ 160, 120, 0 },
+	{ 176, 144, 0 },
+	{ 320, 240, 0 },
+	{ 352, 288, 0 },
+	{ 640, 480, 0 },
+};
+
+/* x,y -> PSZ_ */
+int pwc_decode_size(struct pwc_device *pdev, int width, int height)
+{
+	int i, find;
+
+	/* Make sure we don't go beyond our max size.
+           NB: we have different limits for RAW and normal modes. In case
+           you don't have the decompressor loaded or use RAW mode, 
+           the maximum viewable size is smaller.
+        */
+	if (pdev->vpalette == VIDEO_PALETTE_RAW)
+	{
+		if (width > pdev->abs_max.x || height > pdev->abs_max.y)
+		{
+			Debug("VIDEO_PALETTE_RAW: going beyond abs_max.\n");
+                	return -1;
+                }
+	}
+	else
+	{
+		if (width > pdev->view_max.x || height > pdev->view_max.y)
+		{
+			Debug("VIDEO_PALETTE_ not RAW: going beyond view_max.\n");
+			return -1;
+		}
+	}
+
+	/* Find the largest size supported by the camera that fits into the
+	   requested size.
+	 */
+	find = -1;
+	for (i = 0; i < PSZ_MAX; i++) {
+		if (pdev->image_mask & (1 << i)) {
+			if (pwc_image_sizes[i].x <= width && pwc_image_sizes[i].y <= height)
+				find = i;
+		}
+	}
+	return find;
+}
+
+/* initialize variables depending on type and decompressor*/
+void pwc_construct(struct pwc_device *pdev)
+{
+	switch(pdev->type) {
+	case 645:
+	case 646:
+		pdev->view_min.x = 128;
+		pdev->view_min.y =  96;
+		pdev->view_max.x = 352;
+		pdev->view_max.y = 288;
+                pdev->abs_max.x  = 352;
+                pdev->abs_max.y  = 288;
+		pdev->image_mask = 1 << PSZ_SQCIF | 1 << PSZ_QCIF | 1 << PSZ_CIF;
+		pdev->vcinterface = 2;
+		pdev->vendpoint = 4;
+		pdev->frame_header_size = 0;
+		pdev->frame_trailer_size = 0;
+		break;
+	case 675:
+	case 680:
+	case 690:
+		pdev->view_min.x = 128;
+		pdev->view_min.y =  96;
+		/* Anthill bug #38: PWC always reports max size, even without PWCX */
+		pdev->view_max.x = 640;
+		pdev->view_max.y = 480;
+		pdev->image_mask = 1 << PSZ_SQCIF | 1 << PSZ_QSIF | 1 << PSZ_QCIF | 1 << PSZ_SIF | 1 << PSZ_CIF | 1 << PSZ_VGA;
+                pdev->abs_max.x = 640;
+                pdev->abs_max.y = 480;
+		pdev->vcinterface = 3;
+		pdev->vendpoint = 4;
+		pdev->frame_header_size = 0;
+		pdev->frame_trailer_size = 0;
+		break;
+	case 720:
+	case 730:
+	case 740:
+	case 750:
+		pdev->view_min.x = 160;
+		pdev->view_min.y = 120;
+		pdev->view_max.x = 640;
+		pdev->view_max.y = 480;
+		pdev->image_mask = 1 << PSZ_QSIF | 1 << PSZ_SIF | 1 << PSZ_VGA;
+                pdev->abs_max.x = 640;
+                pdev->abs_max.y = 480;
+		pdev->vcinterface = 3;
+		pdev->vendpoint = 5;
+		pdev->frame_header_size = TOUCAM_HEADER_SIZE;
+		pdev->frame_trailer_size = TOUCAM_TRAILER_SIZE;
+		break;
+	}
+	Debug("type = %d\n",pdev->type);
+	pdev->vpalette = VIDEO_PALETTE_YUV420P; /* default */
+	pdev->view_min.size = pdev->view_min.x * pdev->view_min.y;
+	pdev->view_max.size = pdev->view_max.x * pdev->view_max.y;
+	/* length of image, in YUV format; always allocate enough memory. */
+	pdev->len_per_image = (pdev->abs_max.x * pdev->abs_max.y * 3) / 2;
+}
+
+
diff --git a/drivers/media/video/pwc/pwc-nala.h b/drivers/media/video/pwc/pwc-nala.h
new file mode 100644
index 000000000000..e6c5cb69d03b
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-nala.h
@@ -0,0 +1,66 @@
+   /* SQCIF */
+   {
+      {0, 0, {0x04, 0x01, 0x03}},
+      {8, 0, {0x05, 0x01, 0x03}},
+      {7, 0, {0x08, 0x01, 0x03}},
+      {7, 0, {0x0A, 0x01, 0x03}},
+      {6, 0, {0x0C, 0x01, 0x03}},
+      {5, 0, {0x0F, 0x01, 0x03}},
+      {4, 0, {0x14, 0x01, 0x03}},
+      {3, 0, {0x18, 0x01, 0x03}},
+   },
+   /* QSIF */
+   {
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+   },
+   /* QCIF */
+   {
+      {0, 0, {0x04, 0x01, 0x02}},
+      {8, 0, {0x05, 0x01, 0x02}},
+      {7, 0, {0x08, 0x01, 0x02}},
+      {6, 0, {0x0A, 0x01, 0x02}},
+      {5, 0, {0x0C, 0x01, 0x02}},
+      {4, 0, {0x0F, 0x01, 0x02}},
+      {1, 0, {0x14, 0x01, 0x02}},
+      {1, 0, {0x18, 0x01, 0x02}},
+   },
+   /* SIF */
+   {
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+   },
+   /* CIF */
+   {
+      {4, 0, {0x04, 0x01, 0x01}},
+      {7, 1, {0x05, 0x03, 0x01}},
+      {6, 1, {0x08, 0x03, 0x01}},
+      {4, 1, {0x0A, 0x03, 0x01}},
+      {3, 1, {0x0C, 0x03, 0x01}},
+      {2, 1, {0x0F, 0x03, 0x01}},
+      {0},
+      {0},
+   },
+   /* VGA */
+   {  
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+      {0},
+   },
diff --git a/drivers/media/video/pwc/pwc-timon.c b/drivers/media/video/pwc/pwc-timon.c
new file mode 100644
index 000000000000..dee967173d6c
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-timon.c
@@ -0,0 +1,316 @@
+/* Linux driver for Philips webcam
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+
+/* This tables contains entries for the 675/680/690 (Timon) camera, with
+   4 different qualities (no compression, low, medium, high).
+   It lists the bandwidth requirements for said mode by its alternate interface
+   number. An alternate of 0 means that the mode is unavailable.
+
+   There are 6 * 4 * 4 entries:
+     6 different resolutions subqcif, qsif, qcif, sif, cif, vga
+     6 framerates: 5, 10, 15, 20, 25, 30
+     4 compression modi: none, low, medium, high
+
+   When an uncompressed mode is not available, the next available compressed mode
+   will be chosen (unless the decompressor is absent). Sometimes there are only
+   1 or 2 compressed modes available; in that case entries are duplicated.
+*/
+
+#include "pwc-timon.h"
+
+const struct Timon_table_entry Timon_table[PSZ_MAX][6][4] =
+{
+   /* SQCIF */
+   {
+      /* 5 fps */
+      {
+         {1, 140,    0, {0x05, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x8C, 0xFC, 0x80, 0x02}},
+         {1, 140,    0, {0x05, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x8C, 0xFC, 0x80, 0x02}},
+         {1, 140,    0, {0x05, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x8C, 0xFC, 0x80, 0x02}},
+         {1, 140,    0, {0x05, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x8C, 0xFC, 0x80, 0x02}},
+      },
+      /* 10 fps */
+      {
+         {2, 280,    0, {0x04, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x18, 0xA9, 0x80, 0x02}},
+         {2, 280,    0, {0x04, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x18, 0xA9, 0x80, 0x02}},
+         {2, 280,    0, {0x04, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x18, 0xA9, 0x80, 0x02}},
+         {2, 280,    0, {0x04, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x18, 0xA9, 0x80, 0x02}},
+      },
+      /* 15 fps */
+      {
+         {3, 410,    0, {0x03, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x9A, 0x71, 0x80, 0x02}},
+         {3, 410,    0, {0x03, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x9A, 0x71, 0x80, 0x02}},
+         {3, 410,    0, {0x03, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x9A, 0x71, 0x80, 0x02}},
+         {3, 410,    0, {0x03, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x9A, 0x71, 0x80, 0x02}},
+      },
+      /* 20 fps */
+      {
+         {4, 559,    0, {0x02, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x2F, 0x56, 0x80, 0x02}},
+         {4, 559,    0, {0x02, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x2F, 0x56, 0x80, 0x02}},
+         {4, 559,    0, {0x02, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x2F, 0x56, 0x80, 0x02}},
+         {4, 559,    0, {0x02, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x2F, 0x56, 0x80, 0x02}},
+      },
+      /* 25 fps */
+      {
+         {5, 659,    0, {0x01, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x93, 0x46, 0x80, 0x02}},
+         {5, 659,    0, {0x01, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x93, 0x46, 0x80, 0x02}},
+         {5, 659,    0, {0x01, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x93, 0x46, 0x80, 0x02}},
+         {5, 659,    0, {0x01, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x93, 0x46, 0x80, 0x02}},
+      },
+      /* 30 fps */
+      {
+         {7, 838,    0, {0x00, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x46, 0x3B, 0x80, 0x02}},
+         {7, 838,    0, {0x00, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x46, 0x3B, 0x80, 0x02}},
+         {7, 838,    0, {0x00, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x46, 0x3B, 0x80, 0x02}},
+         {7, 838,    0, {0x00, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x46, 0x3B, 0x80, 0x02}},
+      },
+   },
+   /* QSIF */
+   {
+      /* 5 fps */
+      {
+         {1, 146,    0, {0x2D, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x92, 0xFC, 0xC0, 0x02}},
+         {1, 146,    0, {0x2D, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x92, 0xFC, 0xC0, 0x02}},
+         {1, 146,    0, {0x2D, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x92, 0xFC, 0xC0, 0x02}},
+         {1, 146,    0, {0x2D, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x92, 0xFC, 0xC0, 0x02}},
+      },
+      /* 10 fps */
+      {
+         {2, 291,    0, {0x2C, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x23, 0xA1, 0xC0, 0x02}},
+         {1, 191,  630, {0x2C, 0xF4, 0x05, 0x13, 0xA9, 0x12, 0xE1, 0x17, 0x08, 0xBF, 0xF4, 0xC0, 0x02}},
+         {1, 191,  630, {0x2C, 0xF4, 0x05, 0x13, 0xA9, 0x12, 0xE1, 0x17, 0x08, 0xBF, 0xF4, 0xC0, 0x02}},
+         {1, 191,  630, {0x2C, 0xF4, 0x05, 0x13, 0xA9, 0x12, 0xE1, 0x17, 0x08, 0xBF, 0xF4, 0xC0, 0x02}},
+      },
+      /* 15 fps */
+      {
+         {3, 437,    0, {0x2B, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0xB5, 0x6D, 0xC0, 0x02}},
+         {2, 291,  640, {0x2B, 0xF4, 0x05, 0x13, 0xF7, 0x13, 0x2F, 0x13, 0x08, 0x23, 0xA1, 0xC0, 0x02}},
+         {2, 291,  640, {0x2B, 0xF4, 0x05, 0x13, 0xF7, 0x13, 0x2F, 0x13, 0x08, 0x23, 0xA1, 0xC0, 0x02}},
+         {1, 191,  420, {0x2B, 0xF4, 0x0D, 0x0D, 0x1B, 0x0C, 0x53, 0x1E, 0x08, 0xBF, 0xF4, 0xC0, 0x02}},
+      },
+      /* 20 fps */
+      {
+         {4, 588,    0, {0x2A, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x4C, 0x52, 0xC0, 0x02}},
+         {3, 447,  730, {0x2A, 0xF4, 0x05, 0x16, 0xC9, 0x16, 0x01, 0x0E, 0x18, 0xBF, 0x69, 0xC0, 0x02}},
+         {2, 292,  476, {0x2A, 0xF4, 0x0D, 0x0E, 0xD8, 0x0E, 0x10, 0x19, 0x18, 0x24, 0xA1, 0xC0, 0x02}},
+         {1, 192,  312, {0x2A, 0xF4, 0x1D, 0x09, 0xB3, 0x08, 0xEB, 0x1E, 0x18, 0xC0, 0xF4, 0xC0, 0x02}},
+      },
+      /* 25 fps */
+      {
+         {5, 703,    0, {0x29, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0xBF, 0x42, 0xC0, 0x02}},
+         {3, 447,  610, {0x29, 0xF4, 0x05, 0x13, 0x0B, 0x12, 0x43, 0x14, 0x18, 0xBF, 0x69, 0xC0, 0x02}},
+         {2, 292,  398, {0x29, 0xF4, 0x0D, 0x0C, 0x6C, 0x0B, 0xA4, 0x1E, 0x18, 0x24, 0xA1, 0xC0, 0x02}},
+         {1, 192,  262, {0x29, 0xF4, 0x25, 0x08, 0x23, 0x07, 0x5B, 0x1E, 0x18, 0xC0, 0xF4, 0xC0, 0x02}},
+      },
+      /* 30 fps */
+      {
+         {8, 873,    0, {0x28, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x69, 0x37, 0xC0, 0x02}},
+         {5, 704,  774, {0x28, 0xF4, 0x05, 0x18, 0x21, 0x17, 0x59, 0x0F, 0x18, 0xC0, 0x42, 0xC0, 0x02}},
+         {3, 448,  492, {0x28, 0xF4, 0x05, 0x0F, 0x5D, 0x0E, 0x95, 0x15, 0x18, 0xC0, 0x69, 0xC0, 0x02}},
+         {2, 291,  320, {0x28, 0xF4, 0x1D, 0x09, 0xFB, 0x09, 0x33, 0x1E, 0x18, 0x23, 0xA1, 0xC0, 0x02}},
+      },
+   },
+   /* QCIF */
+   {
+      /* 5 fps */
+      {
+         {1, 193,    0, {0x0D, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0xC1, 0xF4, 0xC0, 0x02}},
+         {1, 193,    0, {0x0D, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0xC1, 0xF4, 0xC0, 0x02}},
+         {1, 193,    0, {0x0D, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0xC1, 0xF4, 0xC0, 0x02}},
+         {1, 193,    0, {0x0D, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0xC1, 0xF4, 0xC0, 0x02}},
+      },
+      /* 10 fps */
+      {
+         {3, 385,    0, {0x0C, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0x81, 0x79, 0xC0, 0x02}},
+         {2, 291,  800, {0x0C, 0xF4, 0x05, 0x18, 0xF4, 0x18, 0x18, 0x11, 0x08, 0x23, 0xA1, 0xC0, 0x02}},
+         {2, 291,  800, {0x0C, 0xF4, 0x05, 0x18, 0xF4, 0x18, 0x18, 0x11, 0x08, 0x23, 0xA1, 0xC0, 0x02}},
+         {1, 194,  532, {0x0C, 0xF4, 0x05, 0x10, 0x9A, 0x0F, 0xBE, 0x1B, 0x08, 0xC2, 0xF0, 0xC0, 0x02}},
+      },
+      /* 15 fps */
+      {
+         {4, 577,    0, {0x0B, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0x41, 0x52, 0xC0, 0x02}},
+         {3, 447,  818, {0x0B, 0xF4, 0x05, 0x19, 0x89, 0x18, 0xAD, 0x0F, 0x10, 0xBF, 0x69, 0xC0, 0x02}},
+         {2, 292,  534, {0x0B, 0xF4, 0x05, 0x10, 0xA3, 0x0F, 0xC7, 0x19, 0x10, 0x24, 0xA1, 0xC0, 0x02}},
+         {1, 195,  356, {0x0B, 0xF4, 0x15, 0x0B, 0x11, 0x0A, 0x35, 0x1E, 0x10, 0xC3, 0xF0, 0xC0, 0x02}},
+      },
+      /* 20 fps */
+      {
+         {6, 776,    0, {0x0A, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0x08, 0x3F, 0xC0, 0x02}},
+         {4, 591,  804, {0x0A, 0xF4, 0x05, 0x19, 0x1E, 0x18, 0x42, 0x0F, 0x18, 0x4F, 0x4E, 0xC0, 0x02}},
+         {3, 447,  608, {0x0A, 0xF4, 0x05, 0x12, 0xFD, 0x12, 0x21, 0x15, 0x18, 0xBF, 0x69, 0xC0, 0x02}},
+         {2, 291,  396, {0x0A, 0xF4, 0x15, 0x0C, 0x5E, 0x0B, 0x82, 0x1E, 0x18, 0x23, 0xA1, 0xC0, 0x02}},
+      },
+      /* 25 fps */
+      {
+         {9, 928,    0, {0x09, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0xA0, 0x33, 0xC0, 0x02}},
+         {5, 703,  800, {0x09, 0xF4, 0x05, 0x18, 0xF4, 0x18, 0x18, 0x10, 0x18, 0xBF, 0x42, 0xC0, 0x02}},
+         {3, 447,  508, {0x09, 0xF4, 0x0D, 0x0F, 0xD2, 0x0E, 0xF6, 0x1B, 0x18, 0xBF, 0x69, 0xC0, 0x02}},
+         {2, 292,  332, {0x09, 0xF4, 0x1D, 0x0A, 0x5A, 0x09, 0x7E, 0x1E, 0x18, 0x24, 0xA1, 0xC0, 0x02}},
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {9, 956,  876, {0x08, 0xF4, 0x05, 0x1B, 0x58, 0x1A, 0x7C, 0x0E, 0x20, 0xBC, 0x33, 0x10, 0x02}},
+         {4, 592,  542, {0x08, 0xF4, 0x05, 0x10, 0xE4, 0x10, 0x08, 0x17, 0x20, 0x50, 0x4E, 0x10, 0x02}},
+         {2, 291,  266, {0x08, 0xF4, 0x25, 0x08, 0x48, 0x07, 0x6C, 0x1E, 0x20, 0x23, 0xA1, 0x10, 0x02}},
+      },
+   },
+   /* SIF */
+   {
+      /* 5 fps */
+      {
+         {4, 582,    0, {0x35, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x46, 0x52, 0x60, 0x02}},
+         {3, 387, 1276, {0x35, 0xF4, 0x05, 0x27, 0xD8, 0x26, 0x48, 0x03, 0x10, 0x83, 0x79, 0x60, 0x02}},
+         {2, 291,  960, {0x35, 0xF4, 0x0D, 0x1D, 0xF2, 0x1C, 0x62, 0x04, 0x10, 0x23, 0xA1, 0x60, 0x02}},
+         {1, 191,  630, {0x35, 0xF4, 0x1D, 0x13, 0xA9, 0x12, 0x19, 0x05, 0x08, 0xBF, 0xF4, 0x60, 0x02}},
+      },
+      /* 10 fps */
+      {
+         {0, },
+         {6, 775, 1278, {0x34, 0xF4, 0x05, 0x27, 0xE8, 0x26, 0x58, 0x05, 0x30, 0x07, 0x3F, 0x10, 0x02}},
+         {3, 447,  736, {0x34, 0xF4, 0x15, 0x16, 0xFB, 0x15, 0x6B, 0x05, 0x18, 0xBF, 0x69, 0x10, 0x02}},
+         {2, 291,  480, {0x34, 0xF4, 0x2D, 0x0E, 0xF9, 0x0D, 0x69, 0x09, 0x18, 0x23, 0xA1, 0x10, 0x02}},
+      },
+      /* 15 fps */
+      {
+         {0, },
+         {9, 955, 1050, {0x33, 0xF4, 0x05, 0x20, 0xCF, 0x1F, 0x3F, 0x06, 0x48, 0xBB, 0x33, 0x10, 0x02}},
+         {4, 591,  650, {0x33, 0xF4, 0x15, 0x14, 0x44, 0x12, 0xB4, 0x08, 0x30, 0x4F, 0x4E, 0x10, 0x02}},
+         {3, 448,  492, {0x33, 0xF4, 0x25, 0x0F, 0x52, 0x0D, 0xC2, 0x09, 0x28, 0xC0, 0x69, 0x10, 0x02}},
+      },
+      /* 20 fps */
+      {
+         {0, },
+         {9, 958,  782, {0x32, 0xF4, 0x0D, 0x18, 0x6A, 0x16, 0xDA, 0x0B, 0x58, 0xBE, 0x33, 0xD0, 0x02}},
+         {5, 703,  574, {0x32, 0xF4, 0x1D, 0x11, 0xE7, 0x10, 0x57, 0x0B, 0x40, 0xBF, 0x42, 0xD0, 0x02}},
+         {3, 446,  364, {0x32, 0xF4, 0x3D, 0x0B, 0x5C, 0x09, 0xCC, 0x0E, 0x30, 0xBE, 0x69, 0xD0, 0x02}},
+      },
+      /* 25 fps */
+      {
+         {0, },
+         {9, 958,  654, {0x31, 0xF4, 0x15, 0x14, 0x66, 0x12, 0xD6, 0x0B, 0x50, 0xBE, 0x33, 0x90, 0x02}},
+         {6, 776,  530, {0x31, 0xF4, 0x25, 0x10, 0x8C, 0x0E, 0xFC, 0x0C, 0x48, 0x08, 0x3F, 0x90, 0x02}},
+         {4, 592,  404, {0x31, 0xF4, 0x35, 0x0C, 0x96, 0x0B, 0x06, 0x0B, 0x38, 0x50, 0x4E, 0x90, 0x02}},
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {9, 957,  526, {0x30, 0xF4, 0x25, 0x10, 0x68, 0x0E, 0xD8, 0x0D, 0x58, 0xBD, 0x33, 0x60, 0x02}},
+         {6, 775,  426, {0x30, 0xF4, 0x35, 0x0D, 0x48, 0x0B, 0xB8, 0x0F, 0x50, 0x07, 0x3F, 0x60, 0x02}},
+         {4, 590,  324, {0x30, 0x7A, 0x4B, 0x0A, 0x1C, 0x08, 0xB4, 0x0E, 0x40, 0x4E, 0x52, 0x60, 0x02}},
+      },
+   },
+   /* CIF */
+   {
+      /* 5 fps */
+      {
+         {6, 771,    0, {0x15, 0xF4, 0x04, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x03, 0x3F, 0x80, 0x02}},
+         {4, 465, 1278, {0x15, 0xF4, 0x05, 0x27, 0xEE, 0x26, 0x36, 0x03, 0x18, 0xD1, 0x65, 0x80, 0x02}},
+         {2, 291,  800, {0x15, 0xF4, 0x15, 0x18, 0xF4, 0x17, 0x3C, 0x05, 0x18, 0x23, 0xA1, 0x80, 0x02}},
+         {1, 193,  528, {0x15, 0xF4, 0x2D, 0x10, 0x7E, 0x0E, 0xC6, 0x0A, 0x18, 0xC1, 0xF4, 0x80, 0x02}},
+      },
+      /* 10 fps */
+      {
+         {0, },
+         {9, 932, 1278, {0x14, 0xF4, 0x05, 0x27, 0xEE, 0x26, 0x36, 0x04, 0x30, 0xA4, 0x33, 0x10, 0x02}},
+         {4, 591,  812, {0x14, 0xF4, 0x15, 0x19, 0x56, 0x17, 0x9E, 0x06, 0x28, 0x4F, 0x4E, 0x10, 0x02}},
+         {2, 291,  400, {0x14, 0xF4, 0x3D, 0x0C, 0x7A, 0x0A, 0xC2, 0x0E, 0x28, 0x23, 0xA1, 0x10, 0x02}},
+      },
+      /* 15 fps */
+      {
+         {0, },
+         {9, 956,  876, {0x13, 0xF4, 0x0D, 0x1B, 0x58, 0x19, 0xA0, 0x05, 0x38, 0xBC, 0x33, 0x60, 0x02}},
+         {5, 703,  644, {0x13, 0xF4, 0x1D, 0x14, 0x1C, 0x12, 0x64, 0x08, 0x38, 0xBF, 0x42, 0x60, 0x02}},
+         {3, 448,  410, {0x13, 0xF4, 0x3D, 0x0C, 0xC4, 0x0B, 0x0C, 0x0E, 0x38, 0xC0, 0x69, 0x60, 0x02}},
+      },
+      /* 20 fps */
+      {
+         {0, },
+         {9, 956,  650, {0x12, 0xF4, 0x1D, 0x14, 0x4A, 0x12, 0x92, 0x09, 0x48, 0xBC, 0x33, 0x10, 0x03}},
+         {6, 776,  528, {0x12, 0xF4, 0x2D, 0x10, 0x7E, 0x0E, 0xC6, 0x0A, 0x40, 0x08, 0x3F, 0x10, 0x03}},
+         {4, 591,  402, {0x12, 0xF4, 0x3D, 0x0C, 0x8F, 0x0A, 0xD7, 0x0E, 0x40, 0x4F, 0x4E, 0x10, 0x03}},
+      },
+      /* 25 fps */
+      {
+         {0, },
+         {9, 956,  544, {0x11, 0xF4, 0x25, 0x10, 0xF4, 0x0F, 0x3C, 0x0A, 0x48, 0xBC, 0x33, 0xC0, 0x02}},
+         {7, 840,  478, {0x11, 0xF4, 0x2D, 0x0E, 0xEB, 0x0D, 0x33, 0x0B, 0x48, 0x48, 0x3B, 0xC0, 0x02}},
+         {5, 703,  400, {0x11, 0xF4, 0x3D, 0x0C, 0x7A, 0x0A, 0xC2, 0x0E, 0x48, 0xBF, 0x42, 0xC0, 0x02}},
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {9, 956,  438, {0x10, 0xF4, 0x35, 0x0D, 0xAC, 0x0B, 0xF4, 0x0D, 0x50, 0xBC, 0x33, 0x10, 0x02}},
+         {7, 838,  384, {0x10, 0xF4, 0x45, 0x0B, 0xFD, 0x0A, 0x45, 0x0F, 0x50, 0x46, 0x3B, 0x10, 0x02}},
+         {6, 773,  354, {0x10, 0x7A, 0x4B, 0x0B, 0x0C, 0x09, 0x80, 0x10, 0x50, 0x05, 0x3F, 0x10, 0x02}},
+      },
+   },
+   /* VGA */
+   {
+      /* 5 fps */
+      {
+         {0, },
+         {6, 773, 1272, {0x1D, 0xF4, 0x15, 0x27, 0xB6, 0x24, 0x96, 0x02, 0x30, 0x05, 0x3F, 0x10, 0x02}},
+         {4, 592,  976, {0x1D, 0xF4, 0x25, 0x1E, 0x78, 0x1B, 0x58, 0x03, 0x30, 0x50, 0x4E, 0x10, 0x02}},
+         {3, 448,  738, {0x1D, 0xF4, 0x3D, 0x17, 0x0C, 0x13, 0xEC, 0x04, 0x30, 0xC0, 0x69, 0x10, 0x02}},
+      },
+      /* 10 fps */
+      {
+         {0, },
+         {9, 956,  788, {0x1C, 0xF4, 0x35, 0x18, 0x9C, 0x15, 0x7C, 0x03, 0x48, 0xBC, 0x33, 0x10, 0x02}},
+         {6, 776,  640, {0x1C, 0x7A, 0x53, 0x13, 0xFC, 0x11, 0x2C, 0x04, 0x48, 0x08, 0x3F, 0x10, 0x02}},
+         {4, 592,  488, {0x1C, 0x7A, 0x6B, 0x0F, 0x3C, 0x0C, 0x6C, 0x06, 0x48, 0x50, 0x4E, 0x10, 0x02}},
+      },
+      /* 15 fps */
+      {
+         {0, },
+         {9, 957,  526, {0x1B, 0x7A, 0x63, 0x10, 0x68, 0x0D, 0x98, 0x06, 0x58, 0xBD, 0x33, 0x80, 0x02}},
+         {9, 957,  526, {0x1B, 0x7A, 0x63, 0x10, 0x68, 0x0D, 0x98, 0x06, 0x58, 0xBD, 0x33, 0x80, 0x02}},
+         {8, 895,  492, {0x1B, 0x7A, 0x6B, 0x0F, 0x5D, 0x0C, 0x8D, 0x06, 0x58, 0x7F, 0x37, 0x80, 0x02}},
+      },
+      /* 20 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 25 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+      /* 30 fps */
+      {
+         {0, },
+         {0, },
+         {0, },
+         {0, },
+      },
+   },
+};
+
diff --git a/drivers/media/video/pwc/pwc-timon.h b/drivers/media/video/pwc/pwc-timon.h
new file mode 100644
index 000000000000..a86b3782a081
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-timon.h
@@ -0,0 +1,61 @@
+/* Linux driver for Philips webcam
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+
+
+/* This tables contains entries for the 675/680/690 (Timon) camera, with
+   4 different qualities (no compression, low, medium, high).
+   It lists the bandwidth requirements for said mode by its alternate interface
+   number. An alternate of 0 means that the mode is unavailable.
+
+   There are 6 * 4 * 4 entries:
+     6 different resolutions subqcif, qsif, qcif, sif, cif, vga
+     6 framerates: 5, 10, 15, 20, 25, 30
+     4 compression modi: none, low, medium, high
+
+   When an uncompressed mode is not available, the next available compressed mode
+   will be chosen (unless the decompressor is absent). Sometimes there are only
+   1 or 2 compressed modes available; in that case entries are duplicated.
+*/
+
+#ifndef PWC_TIMON_H
+#define PWC_TIMON_H
+
+#include "pwc-ioctl.h"
+
+struct Timon_table_entry
+{
+	char alternate;			/* USB alternate interface */
+	unsigned short packetsize;	/* Normal packet size */
+	unsigned short bandlength;	/* Bandlength when decompressing */
+	unsigned char mode[13];		/* precomputed mode settings for cam */
+};
+
+const extern struct Timon_table_entry Timon_table[PSZ_MAX][6][4];
+const extern unsigned int TimonRomTable [16][2][16][8];
+
+
+#endif
+
+
diff --git a/drivers/media/video/pwc/pwc-uncompress.c b/drivers/media/video/pwc/pwc-uncompress.c
new file mode 100644
index 000000000000..ef4204eab6c4
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-uncompress.c
@@ -0,0 +1,146 @@
+/* Linux driver for Philips webcam
+   Decompression frontend.
+   (C) 1999-2003 Nemosoft Unv.
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <asm/current.h>
+#include <asm/types.h>
+
+#include "pwc.h"
+#include "pwc-uncompress.h"
+
+int pwc_decompress(struct pwc_device *pdev)
+{
+	struct pwc_frame_buf *fbuf;
+	int n, line, col, stride;
+	void *yuv, *image;
+	u16 *src;
+	u16 *dsty, *dstu, *dstv;
+
+	if (pdev == NULL)
+		return -EFAULT;
+#if defined(__KERNEL__) && defined(PWC_MAGIC)
+	if (pdev->magic != PWC_MAGIC) {
+		Err("pwc_decompress(): magic failed.\n");
+		return -EFAULT;
+	}
+#endif
+
+	fbuf = pdev->read_frame;
+	if (fbuf == NULL)
+		return -EFAULT;
+	image = pdev->image_ptr[pdev->fill_image];
+	if (!image)
+		return -EFAULT;
+
+	yuv = fbuf->data + pdev->frame_header_size;  /* Skip header */
+
+	/* Raw format; that's easy... */
+	if (pdev->vpalette == VIDEO_PALETTE_RAW)
+	{
+		memcpy(image, yuv, pdev->frame_size);
+		return 0;
+	}
+
+	if (pdev->vbandlength == 0) {
+		/* Uncompressed mode. We copy the data into the output buffer,
+		   using the viewport size (which may be larger than the image
+		   size). Unfortunately we have to do a bit of byte stuffing
+		   to get the desired output format/size.
+		 */
+			/*
+			 * We do some byte shuffling here to go from the
+			 * native format to YUV420P.
+			 */
+			src = (u16 *)yuv;
+			n = pdev->view.x * pdev->view.y;
+
+			/* offset in Y plane */
+			stride = pdev->view.x * pdev->offset.y + pdev->offset.x;
+			dsty = (u16 *)(image + stride);
+
+			/* offsets in U/V planes */
+			stride = pdev->view.x * pdev->offset.y / 4 + pdev->offset.x / 2;
+			dstu = (u16 *)(image + n +         stride);
+			dstv = (u16 *)(image + n + n / 4 + stride);
+
+			/* increment after each line */
+			stride = (pdev->view.x - pdev->image.x) / 2; /* u16 is 2 bytes */
+
+			for (line = 0; line < pdev->image.y; line++) {
+				for (col = 0; col < pdev->image.x; col += 4) {
+					*dsty++ = *src++;
+					*dsty++ = *src++;
+					if (line & 1)
+						*dstv++ = *src++;
+					else
+						*dstu++ = *src++;
+				}
+				dsty += stride;
+				if (line & 1)
+					dstv += (stride >> 1);
+				else
+					dstu += (stride >> 1);
+			}
+	}
+	else {
+		/* Compressed; the decompressor routines will write the data
+		   in planar format immediately.
+		 */
+		int flags;
+                
+                flags = PWCX_FLAG_PLANAR;
+                if (pdev->vsize == PSZ_VGA && pdev->vframes == 5 && pdev->vsnapshot)
+		 {
+		   printk(KERN_ERR "pwc: Mode Bayer is not supported for now\n");
+		   flags |= PWCX_FLAG_BAYER;
+		   return -ENXIO; /* No such device or address: missing decompressor */
+		 }
+
+#if 0
+		switch (pdev->type)
+		 {
+		  case 675:
+		  case 680:
+		  case 690:
+		  case 720:
+		  case 730:
+		  case 740:
+		  case 750:
+		    pwc_dec23_decompress(&pdev->image, &pdev->view,
+				&pdev->offset, yuv, image, flags,
+				pdev->decompress_data, pdev->vbandlength);
+		    break;
+		  case 645:
+		  case 646:
+		    /* TODO & FIXME */
+		    return -ENXIO; /* Missing decompressor */
+		    break;
+		 }
+#endif
+	}
+	return 0;
+}
+
+
diff --git a/drivers/media/video/pwc/pwc-uncompress.h b/drivers/media/video/pwc/pwc-uncompress.h
new file mode 100644
index 000000000000..d3b9250e4ed3
--- /dev/null
+++ b/drivers/media/video/pwc/pwc-uncompress.h
@@ -0,0 +1,41 @@
+/* (C) 1999-2003 Nemosoft Unv.
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/* This file is the bridge between the kernel module and the plugin; it
+   describes the structures and datatypes used in both modules. Any
+   significant change should be reflected by increasing the 
+   pwc_decompressor_version major number.
+ */
+#ifndef PWC_UNCOMPRESS_H
+#define PWC_UNCOMPRESS_H
+
+#include <linux/config.h>
+
+#include "pwc-ioctl.h"
+
+/* from pwc-dec.h */
+#define PWCX_FLAG_PLANAR        0x0001
+/* */
+
+#endif
diff --git a/drivers/media/video/pwc/pwc.h b/drivers/media/video/pwc/pwc.h
new file mode 100644
index 000000000000..6dd76bb3dff1
--- /dev/null
+++ b/drivers/media/video/pwc/pwc.h
@@ -0,0 +1,272 @@
+/* (C) 1999-2003 Nemosoft Unv.
+   (C) 2004      Luc Saillard (luc@saillard.org)
+
+   NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+   driver and thus may have bugs that are not present in the original version.
+   Please send bug reports and support requests to <luc@saillard.org>.
+   The decompression routines have been implemented by reverse-engineering the
+   Nemosoft binary pwcx module. Caveat emptor.
+
+   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifndef PWC_H
+#define PWC_H
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/spinlock.h>
+#include <linux/videodev.h>
+#include <linux/wait.h>
+#include <linux/smp_lock.h>
+#include <asm/semaphore.h>
+#include <asm/errno.h>
+
+#include "pwc-uncompress.h"
+#include "pwc-ioctl.h"
+
+/* Defines and structures for the Philips webcam */
+/* Used for checking memory corruption/pointer validation */
+#define PWC_MAGIC 0x89DC10ABUL
+#undef PWC_MAGIC
+
+/* Turn some debugging options on/off */
+#define PWC_DEBUG 0
+
+/* Trace certain actions in the driver */
+#define TRACE_MODULE	0x0001
+#define TRACE_PROBE	0x0002
+#define TRACE_OPEN	0x0004
+#define TRACE_READ	0x0008
+#define TRACE_MEMORY	0x0010
+#define TRACE_FLOW	0x0020
+#define TRACE_SIZE	0x0040
+#define TRACE_PWCX	0x0080
+#define TRACE_SEQUENCE	0x1000
+
+#define Trace(R, A...) if (pwc_trace & R) printk(KERN_DEBUG PWC_NAME " " A)
+#define Debug(A...) printk(KERN_DEBUG PWC_NAME " " A)
+#define Info(A...)  printk(KERN_INFO  PWC_NAME " " A)
+#define Err(A...)   printk(KERN_ERR   PWC_NAME " " A)
+
+
+/* Defines for ToUCam cameras */
+#define TOUCAM_HEADER_SIZE		8
+#define TOUCAM_TRAILER_SIZE		4
+
+#define FEATURE_MOTOR_PANTILT		0x0001
+
+/* Version block */
+#define PWC_MAJOR	9
+#define PWC_MINOR	0
+#define PWC_VERSION 	"9.0.2-unofficial"
+#define PWC_NAME 	"pwc"
+
+/* Turn certain features on/off */
+#define PWC_INT_PIPE 0
+
+/* Ignore errors in the first N frames, to allow for startup delays */
+#define FRAME_LOWMARK 5
+
+/* Size and number of buffers for the ISO pipe. */
+#define MAX_ISO_BUFS		2
+#define ISO_FRAMES_PER_DESC	10
+#define ISO_MAX_FRAME_SIZE	960
+#define ISO_BUFFER_SIZE 	(ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
+
+/* Frame buffers: contains compressed or uncompressed video data. */
+#define MAX_FRAMES		5
+/* Maximum size after decompression is 640x480 YUV data, 1.5 * 640 * 480 */
+#define PWC_FRAME_SIZE 		(460800 + TOUCAM_HEADER_SIZE + TOUCAM_TRAILER_SIZE)
+
+/* Absolute maximum number of buffers available for mmap() */
+#define MAX_IMAGES 		10
+
+/* The following structures were based on cpia.h. Why reinvent the wheel? :-) */
+struct pwc_iso_buf
+{
+	void *data;
+	int  length;
+	int  read;
+	struct urb *urb;
+};
+
+/* intermediate buffers with raw data from the USB cam */
+struct pwc_frame_buf
+{
+   void *data;
+   volatile int filled;		/* number of bytes filled */
+   struct pwc_frame_buf *next;	/* list */
+#if PWC_DEBUG
+   int sequence;		/* Sequence number */
+#endif
+};
+
+struct pwc_device
+{
+   struct video_device *vdev;
+#ifdef PWC_MAGIC
+   int magic;
+#endif
+   /* Pointer to our usb_device */
+   struct usb_device *udev;
+   
+   int type;                    /* type of cam (645, 646, 675, 680, 690, 720, 730, 740, 750) */
+   int release;			/* release number */
+   int features;		/* feature bits */
+   char serial[30];		/* serial number (string) */
+   int error_status;		/* set when something goes wrong with the cam (unplugged, USB errors) */
+   int usb_init;		/* set when the cam has been initialized over USB */
+
+   /*** Video data ***/
+   int vopen;			/* flag */
+   int vendpoint;		/* video isoc endpoint */
+   int vcinterface;		/* video control interface */
+   int valternate;		/* alternate interface needed */
+   int vframes, vsize;		/* frames-per-second & size (see PSZ_*) */
+   int vpalette;		/* palette: 420P, RAW or RGBBAYER */
+   int vframe_count;		/* received frames */
+   int vframes_dumped; 		/* counter for dumped frames */
+   int vframes_error;		/* frames received in error */
+   int vmax_packet_size;	/* USB maxpacket size */
+   int vlast_packet_size;	/* for frame synchronisation */
+   int visoc_errors;		/* number of contiguous ISOC errors */
+   int vcompression;		/* desired compression factor */
+   int vbandlength;		/* compressed band length; 0 is uncompressed */
+   char vsnapshot;		/* snapshot mode */
+   char vsync;			/* used by isoc handler */
+   char vmirror;		/* for ToUCaM series */
+   
+   int cmd_len;
+   unsigned char cmd_buf[13];
+
+   /* The image acquisition requires 3 to 4 steps:
+      1. data is gathered in short packets from the USB controller
+      2. data is synchronized and packed into a frame buffer
+      3a. in case data is compressed, decompress it directly into image buffer
+      3b. in case data is uncompressed, copy into image buffer with viewport
+      4. data is transferred to the user process
+
+      Note that MAX_ISO_BUFS != MAX_FRAMES != MAX_IMAGES....
+      We have in effect a back-to-back-double-buffer system.
+    */
+   /* 1: isoc */
+   struct pwc_iso_buf sbuf[MAX_ISO_BUFS];
+   char iso_init;
+
+   /* 2: frame */
+   struct pwc_frame_buf *fbuf;	/* all frames */
+   struct pwc_frame_buf *empty_frames, *empty_frames_tail;	/* all empty frames */
+   struct pwc_frame_buf *full_frames, *full_frames_tail;	/* all filled frames */
+   struct pwc_frame_buf *fill_frame;	/* frame currently being filled */
+   struct pwc_frame_buf *read_frame;	/* frame currently read by user process */
+   int frame_header_size, frame_trailer_size;
+   int frame_size;
+   int frame_total_size; /* including header & trailer */
+   int drop_frames;
+#if PWC_DEBUG
+   int sequence;			/* Debugging aid */
+#endif
+
+   /* 3: decompression */
+   struct pwc_decompressor *decompressor;	/* function block with decompression routines */
+   void *decompress_data;		/* private data for decompression engine */
+
+   /* 4: image */
+   /* We have an 'image' and a 'view', where 'image' is the fixed-size image
+      as delivered by the camera, and 'view' is the size requested by the
+      program. The camera image is centered in this viewport, laced with
+      a gray or black border. view_min <= image <= view <= view_max;
+    */
+   int image_mask;			/* bitmask of supported sizes */
+   struct pwc_coord view_min, view_max;	/* minimum and maximum viewable sizes */
+   struct pwc_coord abs_max;            /* maximum supported size with compression */
+   struct pwc_coord image, view;	/* image and viewport size */
+   struct pwc_coord offset;		/* offset within the viewport */
+
+   void *image_data;			/* total buffer, which is subdivided into ... */
+   void *image_ptr[MAX_IMAGES];		/* ...several images... */
+   int fill_image;			/* ...which are rotated. */
+   int len_per_image;			/* length per image */
+   int image_read_pos;			/* In case we read data in pieces, keep track of were we are in the imagebuffer */
+   int image_used[MAX_IMAGES];		/* For MCAPTURE and SYNC */
+
+   struct semaphore modlock;		/* to prevent races in video_open(), etc */
+   spinlock_t ptrlock;			/* for manipulating the buffer pointers */
+
+   /*** motorized pan/tilt feature */
+   struct pwc_mpt_range angle_range;
+   int pan_angle;			/* in degrees * 100 */
+   int tilt_angle;			/* absolute angle; 0,0 is home position */
+
+   /*** Misc. data ***/
+   wait_queue_head_t frameq;		/* When waiting for a frame to finish... */
+#if PWC_INT_PIPE
+   void *usb_int_handler;		/* for the interrupt endpoint */
+#endif
+};
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Global variable */
+extern int pwc_trace;
+
+/** functions in pwc-if.c */
+int pwc_try_video_mode(struct pwc_device *pdev, int width, int height, int new_fps, int new_compression, int new_snapshot);
+
+/** Functions in pwc-misc.c */
+/* sizes in pixels */
+extern struct pwc_coord pwc_image_sizes[PSZ_MAX];
+
+int pwc_decode_size(struct pwc_device *pdev, int width, int height);
+void pwc_construct(struct pwc_device *pdev);
+
+/** Functions in pwc-ctrl.c */
+/* Request a certain video mode. Returns < 0 if not possible */
+extern int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, int frames, int compression, int snapshot);
+
+/* Various controls; should be obvious. Value 0..65535, or < 0 on error */
+extern int pwc_get_brightness(struct pwc_device *pdev);
+extern int pwc_set_brightness(struct pwc_device *pdev, int value);
+extern int pwc_get_contrast(struct pwc_device *pdev);
+extern int pwc_set_contrast(struct pwc_device *pdev, int value);
+extern int pwc_get_gamma(struct pwc_device *pdev);
+extern int pwc_set_gamma(struct pwc_device *pdev, int value);
+extern int pwc_get_saturation(struct pwc_device *pdev);
+extern int pwc_set_saturation(struct pwc_device *pdev, int value);
+extern int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value);
+extern int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor);
+
+/* Power down or up the camera; not supported by all models */
+extern int pwc_camera_power(struct pwc_device *pdev, int power);
+
+/* Private ioctl()s; see pwc-ioctl.h */
+extern int pwc_ioctl(struct pwc_device *pdev, unsigned int cmd, void *arg);
+
+
+/** pwc-uncompress.c */
+/* Expand frame to image, possibly including decompression. Uses read_frame and fill_image */
+extern int pwc_decompress(struct pwc_device *pdev);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif