vicam.c

linux-2.6.15.6

/*
 * USB ViCam WebCam driver
 * Copyright (c) 2002 Joe Burks ([e-mail]),
 *                    Christopher L Cheney ([e-mail]),
 *                    Pavel Machek ([e-mail]),
 *                    John Tyner ([e-mail]),
 *                    Monroe Williams ([e-mail])
 *
 * Supports 3COM HomeConnect PC Digital WebCam
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * This source code is based heavily on the CPiA webcam driver which was
 * written by Peter Pregler, Scott J. Bertin and Johannes Erdfelt
 *
 * Portions of this code were also copied from usbvideo.c
 *
 * Special thanks to the the whole team at Sourceforge for help making
 * this driver become a reality.  Notably:
 * Andy Armstrong who reverse engineered the color encoding and
 * Pavel Machek and Chris Cheney who worked on reverse engineering the
 *    camera controls and wrote the first generation driver.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/videodev.h>
#include <linux/usb.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include "usbvideo.h"

// #define VICAM_DEBUG

#ifdef VICAM_DEBUG
#define ADBG(lineno,fmt,args...) printk(fmt, jiffies, __FUNCTION__, lineno, ##args)
#define DBG(fmt,args...) ADBG((__LINE__),KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt,##args)
#else
#define DBG(fmn,args...) do {} while(0)
#endif

#define DRIVER_AUTHOR           "Joe Burks, [e-mail]"
#define DRIVER_DESC             "ViCam WebCam Driver"

/* Define these values to match your device */
#define USB_VICAM_VENDOR_ID	0x04c1
#define USB_VICAM_PRODUCT_ID	0x009d

#define VICAM_BYTES_PER_PIXEL   3
#define VICAM_MAX_READ_SIZE     (512*242+128)
#define VICAM_MAX_FRAME_SIZE    (VICAM_BYTES_PER_PIXEL*320*240)
#define VICAM_FRAMES            2

#define VICAM_HEADER_SIZE       64

#define clamp( x, l, h )        max_t( __typeof__( x ),         \
                                       ( l ),                   \
                                       min_t( __typeof__( x ),  \
                                              ( h ),            \
                                              ( x ) ) )

/* Not sure what all the bytes in these char
 * arrays do, but they're necessary to make
 * the camera work.
 */

static unsigned char setup1[] = {
	0xB6, 0xC3, 0x1F, 0x00, 0x02, 0x64, 0xE7, 0x67,
	0xFD, 0xFF, 0x0E, 0xC0, 0xE7, 0x09, 0xDE, 0x00,
	0x8E, 0x00, 0xC0, 0x09, 0x40, 0x03, 0xC0, 0x17,
	0x44, 0x03, 0x4B, 0xAF, 0xC0, 0x07, 0x00, 0x00,
	0x4B, 0xAF, 0x97, 0xCF, 0x00, 0x00
};

static unsigned char setup2[] = {
	0xB6, 0xC3, 0x03, 0x00, 0x03, 0x64, 0x18, 0x00,
	0x00, 0x00
};

static unsigned char setup3[] = {
	0xB6, 0xC3, 0x01, 0x00, 0x06, 0x64, 0x00, 0x00
};

static unsigned char setup4[] = {
	0xB6, 0xC3, 0x8F, 0x06, 0x02, 0x64, 0xE7, 0x07,
	0x00, 0x00, 0x08, 0xC0, 0xE7, 0x07, 0x00, 0x00,
	0x3E, 0xC0, 0xE7, 0x07, 0x54, 0x01, 0xAA, 0x00,
	0xE7, 0x07, 0xC8, 0x05, 0xB6, 0x00, 0xE7, 0x07,
	0x42, 0x01, 0xD2, 0x00, 0xE7, 0x07, 0x7C, 0x00,
	0x16, 0x00, 0xE7, 0x07, 0x56, 0x00, 0x18, 0x00,
	0xE7, 0x07, 0x06, 0x00, 0x92, 0xC0, 0xE7, 0x07,
	0x00, 0x00, 0x1E, 0xC0, 0xE7, 0x07, 0xFF, 0xFF,
	0x22, 0xC0, 0xE7, 0x07, 0x04, 0x00, 0x24, 0xC0,
	0xE7, 0x07, 0xEC, 0x27, 0x28, 0xC0, 0xE7, 0x07,
	0x16, 0x01, 0x8E, 0x00, 0xE7, 0x87, 0x01, 0x00,
	0x0E, 0xC0, 0x97, 0xCF, 0xD7, 0x09, 0x00, 0xC0,
	0xE7, 0x77, 0x01, 0x00, 0x92, 0xC0, 0x09, 0xC1,
	0xE7, 0x09, 0xFE, 0x05, 0x24, 0x01, 0xE7, 0x09,
	0x04, 0x06, 0x26, 0x01, 0xE7, 0x07, 0x07, 0x00,
	0x92, 0xC0, 0xE7, 0x05, 0x00, 0xC0, 0xC0, 0xDF,
	0x97, 0xCF, 0x17, 0x00, 0x57, 0x00, 0x17, 0x02,
	0xD7, 0x09, 0x00, 0xC0, 0xE7, 0x77, 0x01, 0x00,
	0x92, 0xC0, 0x0A, 0xC1, 0xE7, 0x57, 0xFF, 0xFF,
	0xFA, 0x05, 0x0D, 0xC0, 0xE7, 0x57, 0x00, 0x00,
	0xFA, 0x05, 0x0F, 0xC0, 0x9F, 0xAF, 0xC6, 0x00,
	0xE7, 0x05, 0x00, 0xC0, 0xC8, 0x05, 0xC1, 0x05,
	0xC0, 0x05, 0xC0, 0xDF, 0x97, 0xCF, 0x27, 0xDA,
	0xFA, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x0B, 0x06,
	0x73, 0xCF, 0x9F, 0xAF, 0x78, 0x01, 0x9F, 0xAF,
	0x1A, 0x03, 0x6E, 0xCF, 0xE7, 0x09, 0xFC, 0x05,
	0x24, 0x01, 0xE7, 0x09, 0x02, 0x06, 0x26, 0x01,
	0xE7, 0x07, 0x07, 0x00, 0x92, 0xC0, 0xE7, 0x09,
	0xFC, 0x05, 0xFE, 0x05, 0xE7, 0x09, 0x02, 0x06,
	0x04, 0x06, 0xE7, 0x09, 0x00, 0x06, 0xFC, 0x05,
	0xE7, 0x09, 0xFE, 0x05, 0x00, 0x06, 0x27, 0xDA,
	0xFA, 0x05, 0xE7, 0x57, 0x01, 0x00, 0xFA, 0x05,
	0x02, 0xCA, 0x04, 0xC0, 0x97, 0xCF, 0x9F, 0xAF,
	0x66, 0x05, 0x97, 0xCF, 0xE7, 0x07, 0x40, 0x00,
	0x02, 0x06, 0xC8, 0x09, 0xFC, 0x05, 0x9F, 0xAF,
	0xDA, 0x02, 0x97, 0xCF, 0xCF, 0x17, 0x02, 0x00,
	0xEF, 0x57, 0x81, 0x00, 0x09, 0x06, 0x9F, 0xA0,
	0xB6, 0x01, 0xEF, 0x57, 0x80, 0x00, 0x09, 0x06,
	0x9F, 0xA0, 0x40, 0x02, 0xEF, 0x57, 0x01, 0x00,
	0x0B, 0x06, 0x9F, 0xA0, 0x46, 0x03, 0xE7, 0x07,
	0x01, 0x00, 0x0A, 0xC0, 0x46, 0xAF, 0x47, 0xAF,
	0x9F, 0xAF, 0x40, 0x02, 0xE7, 0x07, 0x2E, 0x00,
	0x0A, 0xC0, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06,
	0x97, 0xCF, 0x00, 0x0E, 0x01, 0x00, 0xC0, 0x57,
	0x51, 0x00, 0x9F, 0xC0, 0x9E, 0x02, 0xC0, 0x57,
	0x50, 0x00, 0x20, 0xC0, 0xC0, 0x57, 0x55, 0x00,
	0x12, 0xC0, 0xC0, 0x57, 0x56, 0x00, 0x9F, 0xC0,
	0x72, 0x02, 0x9F, 0xCF, 0xD6, 0x02, 0xC1, 0x0B,
	0x08, 0x06, 0x01, 0xD0, 0x6F, 0x90, 0x08, 0x06,
	0xC0, 0x07, 0x08, 0x00, 0xC1, 0x0B, 0x08, 0x06,
	0x9F, 0xAF, 0x28, 0x05, 0x97, 0xCF, 0x2F, 0x0E,
	0x02, 0x00, 0x08, 0x06, 0xC0, 0x07, 0x08, 0x00,
	0xC1, 0x0B, 0x08, 0x06, 0x9F, 0xAF, 0x28, 0x05,
	0x9F, 0xCF, 0xD6, 0x02, 0x2F, 0x0E, 0x02, 0x00,
	0x09, 0x06, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06,
	0x9F, 0xCF, 0xD6, 0x02, 0xEF, 0x67, 0x7F, 0xFF,
	0x09, 0x06, 0xE7, 0x67, 0xFF, 0xFD, 0x22, 0xC0,
	0xE7, 0x67, 0xEF, 0xFF, 0x24, 0xC0, 0xE7, 0x87,
	0x10, 0x00, 0x28, 0xC0, 0x9F, 0xAF, 0xB8, 0x05,
	0xE7, 0x87, 0xE0, 0x21, 0x24, 0xC0, 0x9F, 0xAF,
	0xA8, 0x05, 0xE7, 0x87, 0x08, 0x00, 0x24, 0xC0,
	0xE7, 0x67, 0xDF, 0xFF, 0x24, 0xC0, 0xC8, 0x07,
	0x0A, 0x00, 0xC0, 0x07, 0x00, 0x00, 0xC1, 0x07,
	0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0x9F, 0xAF,
	0xB8, 0x05, 0xC0, 0x07, 0x9E, 0x00, 0x9F, 0xAF,
	0x44, 0x05, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0,
	0xC0, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01,
	0x24, 0xC0, 0xC0, 0x77, 0x00, 0x02, 0x0F, 0xC1,
	0xE7, 0x67, 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x67,
	0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x08, 0x00,
	0x24, 0xC0, 0x08, 0xDA, 0x5E, 0xC1, 0xEF, 0x07,
	0x80, 0x00, 0x09, 0x06, 0x97, 0xCF, 0xEF, 0x07,
	0x01, 0x00, 0x0A, 0x06, 0x97, 0xCF, 0xEF, 0x07,
	0x00, 0x00, 0x0B, 0x06, 0xEF, 0x07, 0x00, 0x00,
	0x0A, 0x06, 0xEF, 0x67, 0x7F, 0xFF, 0x09, 0x06,
	0xEF, 0x07, 0x00, 0x00, 0x0D, 0x06, 0xE7, 0x67,
	0xEF, 0xFF, 0x28, 0xC0, 0xE7, 0x67, 0x17, 0xD8,
	0x24, 0xC0, 0xE7, 0x07, 0x00, 0x00, 0x1E, 0xC0,
	0xE7, 0x07, 0xFF, 0xFF, 0x22, 0xC0, 0x97, 0xCF,
	0xC8, 0x07, 0x0E, 0x06, 0x9F, 0xAF, 0xDA, 0x02,
	0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07,
	0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0x0E, 0x06,
	0xF4, 0x05, 0xE7, 0x07, 0xD6, 0x02, 0xF8, 0x05,
	0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80,
	0x50, 0xAF, 0x97, 0xCF, 0x2F, 0x0C, 0x02, 0x00,
	0x07, 0x06, 0x2F, 0x0C, 0x04, 0x00, 0x06, 0x06,
	0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07,
	0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0xE2, 0x05,
	0xF4, 0x05, 0xE7, 0x07, 0xCE, 0x02, 0xF8, 0x05,
	0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80,
	0x51, 0xAF, 0x97, 0xCF, 0x9F, 0xAF, 0x66, 0x04,
	0x9F, 0xAF, 0x1A, 0x03, 0x59, 0xAF, 0x97, 0xCF,
	0xC0, 0x07, 0x0E, 0x00, 0xC1, 0x0B, 0x0C, 0x06,
	0x41, 0xD1, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07,
	0x3C, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0x68, 0x00,
	0xC0, 0x07, 0x3B, 0x00, 0x9F, 0xAF, 0x44, 0x05,
	0x6F, 0x00, 0x0C, 0x06, 0x68, 0x00, 0xE0, 0x07,
	0x04, 0x01, 0xE8, 0x0B, 0x0A, 0x06, 0xE8, 0x07,
	0x00, 0x00, 0xE0, 0x07, 0x00, 0x02, 0xE0, 0x07,
	0xEC, 0x01, 0xE0, 0x07, 0xFC, 0xFF, 0x97, 0xCF,
	0xE7, 0x07, 0xFF, 0xFF, 0xFA, 0x05, 0xEF, 0x07,
	0x00, 0x00, 0x0B, 0x06, 0xE7, 0x07, 0x0E, 0x06,
	0x24, 0x01, 0xE7, 0x07, 0x0E, 0x06, 0xFE, 0x05,
	0xE7, 0x07, 0x40, 0x00, 0x26, 0x01, 0xE7, 0x07,
	0x40, 0x00, 0x04, 0x06, 0xE7, 0x07, 0x07, 0x00,
	0x92, 0xC0, 0x97, 0xCF, 0xEF, 0x07, 0x02, 0x00,
	0x0B, 0x06, 0x9F, 0xAF, 0x78, 0x01, 0xEF, 0x77,
	0x80, 0x00, 0x07, 0x06, 0x9F, 0xC0, 0x14, 0x04,
	0xEF, 0x77, 0x01, 0x00, 0x07, 0x06, 0x37, 0xC0,
	0xEF, 0x77, 0x01, 0x00, 0x0D, 0x06, 0x0F, 0xC1,
	0xEF, 0x07, 0x01, 0x00, 0x0D, 0x06, 0xC0, 0x07,
	0x02, 0x00, 0xC1, 0x07, 0x30, 0x00, 0x9F, 0xAF,
	0x28, 0x05, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07,
	0x02, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07,
	0xFF, 0x4F, 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07,
	0x38, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x77,
	0x03, 0x00, 0x02, 0xC1, 0x08, 0xDA, 0x75, 0xC1,
	0xC1, 0x77, 0x01, 0x00, 0x0A, 0xC1, 0xC0, 0x07,
	0x01, 0x00, 0xC1, 0x07, 0x02, 0x00, 0x9F, 0xAF,
	0x28, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x06, 0x06,
	0x2C, 0xCF, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07,
	0x04, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xEF, 0x07,
	0x00, 0x00, 0x06, 0x06, 0x22, 0xCF, 0xEF, 0x07,
	0x00, 0x00, 0x0D, 0x06, 0xEF, 0x57, 0x01, 0x00,
	0x06, 0x06, 0x1B, 0xC0, 0xC0, 0x07, 0x01, 0x00,
	0xC1, 0x07, 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05,
	0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00,
	0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07, 0xFF, 0x4F,
	0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07, 0x38, 0x00,
	0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x67, 0x03, 0x00,
	0xC1, 0x57, 0x03, 0x00, 0x02, 0xC0, 0x08, 0xDA,
	0x73, 0xC1, 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07,
	0x12, 0x00, 0xEF, 0x57, 0x00, 0x00, 0x06, 0x06,
	0x02, 0xC0, 0xC1, 0x07, 0x23, 0x00, 0x9F, 0xAF,
	0x28, 0x05, 0xC0, 0x07, 0x14, 0x00, 0xC1, 0x0B,
	0xEA, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07,
	0x3E, 0x00, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x09,
	0xE4, 0x05, 0xFA, 0x05, 0x27, 0xD8, 0xFA, 0x05,
	0xE7, 0x07, 0x0E, 0x06, 0xFC, 0x05, 0xE7, 0x07,
	0x4E, 0x06, 0x00, 0x06, 0xE7, 0x07, 0x40, 0x00,
	0x02, 0x06, 0x9F, 0xAF, 0x66, 0x05, 0x9F, 0xAF,
	0xC6, 0x00, 0x97, 0xCF, 0xC1, 0x0B, 0xE2, 0x05,
	0x41, 0xD0, 0x01, 0xD2, 0xC1, 0x17, 0x23, 0x00,
	0x9F, 0xAF, 0xDC, 0x04, 0xC0, 0x07, 0x04, 0x00,
	0xC1, 0x0B, 0xE3, 0x05, 0x9F, 0xAF, 0x28, 0x05,
	0xC0, 0x07, 0x06, 0x00, 0xC1, 0x09, 0xE6, 0x05,
	0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x07, 0x00,
	0xC1, 0x09, 0xE6, 0x05, 0xC1, 0xD1, 0x9F, 0xAF,
	0x28, 0x05, 0xC0, 0x07, 0x0B, 0x00, 0xC1, 0x09,
	0xE8, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07,
	0x0C, 0x00, 0xC1, 0x09, 0xE8, 0x05, 0xC1, 0xD1,
	0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0D, 0x00,
	0xC1, 0x07, 0x09, 0x00, 0x9F, 0xAF, 0x28, 0x05,
	0xC0, 0x07, 0x03, 0x00, 0xC1, 0x07, 0x32, 0x00,
	0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0F, 0x00,
	0xC1, 0x07, 0x00, 0x00, 0x9F, 0xAF, 0x28, 0x05,
	0x97, 0xCF, 0xE7, 0x67, 0xFF, 0xD9, 0x24, 0xC0,
	0xC8, 0x07, 0x0A, 0x00, 0x40, 0x00, 0xC0, 0x67,
	0x00, 0x02, 0x27, 0x80, 0x24, 0xC0, 0xE7, 0x87,
	0x00, 0x04, 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xF9,
	0x24, 0xC0, 0x01, 0xD2, 0x08, 0xDA, 0x72, 0xC1,
	0xE7, 0x87, 0x00, 0x20, 0x24, 0xC0, 0x97, 0xCF,
	0x27, 0x00, 0x1E, 0xC0, 0xE7, 0x87, 0xFF, 0x00,
	0x22, 0xC0, 0xE7, 0x67, 0x7F, 0xFF, 0x24, 0xC0,
	0xE7, 0x87, 0x80, 0x00, 0x24, 0xC0, 0xE7, 0x87,
	0x80, 0x00, 0x24, 0xC0, 0x97, 0xCF, 0x9F, 0xAF,
	0x0A, 0x05, 0x67, 0x00, 0x1E, 0xC0, 0xE7, 0x67,
	0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00,
	0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0,
	0x97, 0xCF, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x67,
	0x00, 0xFF, 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE,
	0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0,
	0xC1, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01,
	0x24, 0xC0, 0x97, 0xCF, 0xC0, 0x07, 0x40, 0x00,
	0xC8, 0x09, 0xFC, 0x05, 0xE7, 0x67, 0x00, 0xFF,
	0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0,
	0xE7, 0x67, 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x67,
	0xBF, 0xFF, 0x24, 0xC0, 0x00, 0xDA, 0xE8, 0x09,
	0x20, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0,
	0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, 0x00, 0xDA,
	0xE8, 0x09, 0x20, 0xC0, 0x6D, 0xC1, 0xE7, 0x87,
	0x00, 0x01, 0x24, 0xC0, 0x97, 0xCF, 0xE7, 0x07,
	0x32, 0x00, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80,
	0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0xE7, 0x07,
	0x20, 0x4E, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80,
	0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0x09, 0x02,
	0x19, 0x00, 0x01, 0x01, 0x00, 0x80, 0x96, 0x09,
	0x04, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
	0x07, 0x05, 0x81, 0x02, 0x40, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};

static unsigned char setup5[] = {
	0xB6, 0xC3, 0x2F, 0x01, 0x03, 0x64, 0x0E, 0x00,
	0x14, 0x00, 0x1A, 0x00, 0x20, 0x00, 0x26, 0x00,
	0x4A, 0x00, 0x64, 0x00, 0x6A, 0x00, 0x92, 0x00,
	0x9A, 0x00, 0xA0, 0x00, 0xB2, 0x00, 0xB8, 0x00,
	0xBE, 0x00, 0xC2, 0x00, 0xC8, 0x00, 0xCE, 0x00,
	0xDC, 0x00, 0xDA, 0x00, 0xE2, 0x00, 0xE0, 0x00,
	0xE8, 0x00, 0xE6, 0x00, 0xEE, 0x00, 0xEC, 0x00,
	0xF2, 0x00, 0xF8, 0x00, 0x02, 0x01, 0x0A, 0x01,
	0x0E, 0x01, 0x12, 0x01, 0x1E, 0x01, 0x22, 0x01,
	0x28, 0x01, 0x2C, 0x01, 0x32, 0x01, 0x36, 0x01,
	0x44, 0x01, 0x50, 0x01, 0x5E, 0x01, 0x72, 0x01,
	0x76, 0x01, 0x7A, 0x01, 0x80, 0x01, 0x88, 0x01,
	0x8C, 0x01, 0x94, 0x01, 0x9C, 0x01, 0xA0, 0x01,
	0xA4, 0x01, 0xAA, 0x01, 0xB0, 0x01, 0xB4, 0x01,
	0xBA, 0x01, 0xD0, 0x01, 0xDA, 0x01, 0xF6, 0x01,
	0xFA, 0x01, 0x02, 0x02, 0x34, 0x02, 0x3C, 0x02,
	0x44, 0x02, 0x4A, 0x02, 0x50, 0x02, 0x56, 0x02,
	0x74, 0x02, 0x78, 0x02, 0x7E, 0x02, 0x84, 0x02,
	0x8A, 0x02, 0x88, 0x02, 0x90, 0x02, 0x8E, 0x02,
	0x94, 0x02, 0xA2, 0x02, 0xA8, 0x02, 0xAE, 0x02,
	0xB4, 0x02, 0xBA, 0x02, 0xB8, 0x02, 0xC0, 0x02,
	0xBE, 0x02, 0xC4, 0x02, 0xD0, 0x02, 0xD4, 0x02,
	0xE0, 0x02, 0xE6, 0x02, 0xEE, 0x02, 0xF8, 0x02,
	0xFC, 0x02, 0x06, 0x03, 0x1E, 0x03, 0x24, 0x03,
	0x28, 0x03, 0x30, 0x03, 0x2E, 0x03, 0x3C, 0x03,
	0x4A, 0x03, 0x4E, 0x03, 0x54, 0x03, 0x58, 0x03,
	0x5E, 0x03, 0x66, 0x03, 0x6E, 0x03, 0x7A, 0x03,
	0x86, 0x03, 0x8E, 0x03, 0x96, 0x03, 0xB2, 0x03,
	0xB8, 0x03, 0xC6, 0x03, 0xCC, 0x03, 0xD4, 0x03,
	0xDA, 0x03, 0xE8, 0x03, 0xF4, 0x03, 0xFC, 0x03,
	0x04, 0x04, 0x20, 0x04, 0x2A, 0x04, 0x32, 0x04,
	0x36, 0x04, 0x3E, 0x04, 0x44, 0x04, 0x42, 0x04,
	0x48, 0x04, 0x4E, 0x04, 0x4C, 0x04, 0x54, 0x04,
	0x52, 0x04, 0x5A, 0x04, 0x5E, 0x04, 0x62, 0x04,
	0x68, 0x04, 0x74, 0x04, 0x7C, 0x04, 0x80, 0x04,
	0x88, 0x04, 0x8C, 0x04, 0x94, 0x04, 0x9A, 0x04,
	0xA2, 0x04, 0xA6, 0x04, 0xAE, 0x04, 0xB4, 0x04,
	0xC0, 0x04, 0xCC, 0x04, 0xD8, 0x04, 0x2A, 0x05,
	0x46, 0x05, 0x6C, 0x05, 0x00, 0x00
};

/* rvmalloc / rvfree copied from usbvideo.c
 *
 * Not sure why these are not yet non-statics which I can reference through
 * usbvideo.h the same as it is in 2.4.20.  I bet this will get fixed sometime
 * in the future.
 * 
*/
static void *rvmalloc(unsigned long size)
{
	void *mem;
	unsigned long adr;

	size = PAGE_ALIGN(size);
	mem = vmalloc_32(size);
	if (!mem)
		return NULL;

	memset(mem, 0, size); /* Clear the ram out, no junk to the user */
	adr = (unsigned long) mem;
	while (size > 0) {
		SetPageReserved(vmalloc_to_page((void *)adr));
		adr += PAGE_SIZE;
		size -= PAGE_SIZE;
	}

	return mem;
}

static void rvfree(void *mem, unsigned long size)
{
	unsigned long adr;

	if (!mem)
		return;

	adr = (unsigned long) mem;
	while ((long) size > 0) {
		ClearPageReserved(vmalloc_to_page((void *)adr));
		adr += PAGE_SIZE;
		size -= PAGE_SIZE;
	}
	vfree(mem);
}

struct vicam_camera {
	u16 shutter_speed;	// capture shutter speed
	u16 gain;		// capture gain

	u8 *raw_image;		// raw data captured from the camera
	u8 *framebuf;		// processed data in RGB24 format
	u8 *cntrlbuf;		// area used to send control msgs

	struct video_device vdev;	// v4l video device
	struct usb_device *udev;	// usb device

	/* guard against simultaneous accesses to the camera */
	struct semaphore cam_lock;

	int is_initialized;
	u8 open_count;
	u8 bulkEndpoint;
	int needsDummyRead;

#if defined(CONFIG_VIDEO_PROC_FS)
	struct proc_dir_entry *proc_dir;
#endif

};

static int vicam_probe( struct usb_interface *intf, const struct usb_device_id *id);
static void vicam_disconnect(struct usb_interface *intf);
static void read_frame(struct vicam_camera *cam, int framenum);
static void vicam_decode_color(const u8 *, u8 *);

static int __send_control_msg(struct vicam_camera *cam,
			      u8 request,
			      u16 value,
			      u16 index,
			      unsigned char *cp,
			      u16 size)
{
	int status;

	/* cp must be memory that has been allocated by kmalloc */

	status = usb_control_msg(cam->udev,
				 usb_sndctrlpipe(cam->udev, 0),
				 request,
				 USB_DIR_OUT | USB_TYPE_VENDOR |
				 USB_RECIP_DEVICE, value, index,
				 cp, size, 1000);

	status = min(status, 0);

	if (status < 0) {
		printk(KERN_INFO "Failed sending control message, error %d.\n",
		       status);
	}

	return status;
}

static int send_control_msg(struct vicam_camera *cam,
			    u8 request,
			    u16 value,
			    u16 index,
			    unsigned char *cp,
			    u16 size)
{
	int status = -ENODEV;
	down(&cam->cam_lock);
	if (cam->udev) {
		status = __send_control_msg(cam, request, value,
					    index, cp, size);
	}
	up(&cam->cam_lock);
	return status;