patch-2.4.0-test7 linux/drivers/char/c-qcam.c

• Lines: 902
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test6/linux/drivers/char/c-qcam.c
• Orig date: Fri Jun 23 21:55:08 2000

diff -u --recursive --new-file v2.4.0-test6/linux/drivers/char/c-qcam.c linux/drivers/char/c-qcam.c
@@ -1,901 +0,0 @@
-/*
- *	Video4Linux Colour QuickCam driver
- *	Copyright 1997-2000 Philip Blundell <philb@gnu.org>
- *
- *    Module parameters:
- *
- *	parport=auto      -- probe all parports (default)
- *	parport=0         -- parport0 becomes qcam1
- *	parport=2,0,1     -- parports 2,0,1 are tried in that order
- *
- *	probe=0		  -- do no probing, assume camera is present
- *	probe=1		  -- use IEEE-1284 autoprobe data only (default)
- *	probe=2		  -- probe aggressively for cameras
- *
- *	force_rgb=1       -- force data format to RGB (default is BGR)
- *
- * The parport parameter controls which parports will be scanned.
- * Scanning all parports causes some printers to print a garbage page.
- *       -- March 14, 1999  Billy Donahue <billy@escape.com> 
- *
- * Fixed data format to BGR, added force_rgb parameter. Added missing
- * parport_unregister_driver() on module removal.
- *       -- May 28, 2000  Claudio Matsuoka <claudio@conectiva.com>
- */
-
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/malloc.h>
-#include <linux/mm.h>
-#include <linux/parport.h>
-#include <linux/sched.h>
-#include <linux/version.h>
-#include <linux/videodev.h>
-#include <asm/semaphore.h>
-#include <asm/uaccess.h>
-
-struct qcam_device {
-	struct video_device vdev;
-	struct pardevice *pdev;
-	struct parport *pport;
-	int width, height;
-	int ccd_width, ccd_height;
-	int mode;
-	int contrast, brightness, whitebal;
-	int top, left;
-	unsigned int bidirectional;
-	struct semaphore lock;
-};
-
-/* cameras maximum */
-#define MAX_CAMS 4
-
-/* The three possible QuickCam modes */
-#define QC_MILLIONS	0x18
-#define QC_BILLIONS	0x10
-#define QC_THOUSANDS	0x08	/* with VIDEC compression (not supported) */
-
-/* The three possible decimations */
-#define QC_DECIMATION_1		0
-#define QC_DECIMATION_2		2
-#define QC_DECIMATION_4		4
-
-#define BANNER "Colour QuickCam for Video4Linux v0.05"
-
-static int parport[MAX_CAMS] = { [1 ... MAX_CAMS-1] = -1 };
-static int probe = 2;
-static int force_rgb = 0;
-
-static inline void qcam_set_ack(struct qcam_device *qcam, unsigned int i)
-{
-	/* note: the QC specs refer to the PCAck pin by voltage, not
-	   software level.  PC ports have builtin inverters. */
-	parport_frob_control(qcam->pport, 8, i?8:0);
-}
-
-static inline unsigned int qcam_ready1(struct qcam_device *qcam)
-{
-	return (parport_read_status(qcam->pport) & 0x8)?1:0;
-}
-
-static inline unsigned int qcam_ready2(struct qcam_device *qcam)
-{
-	return (parport_read_data(qcam->pport) & 0x1)?1:0;
-}
-
-static unsigned int qcam_await_ready1(struct qcam_device *qcam, 
-					     int value)
-{
-	unsigned long oldjiffies = jiffies;
-	unsigned int i;
-
-	for (oldjiffies = jiffies; (jiffies - oldjiffies) < (HZ/25); )
-		if (qcam_ready1(qcam) == value)
-			return 0;
-
-	/* If the camera didn't respond within 1/25 second, poll slowly 
-	   for a while. */
-	for (i = 0; i < 50; i++)
-	{
-		if (qcam_ready1(qcam) == value)
-			return 0;
-		current->state=TASK_INTERRUPTIBLE;
-		schedule_timeout(HZ/10);
-	}
-
-	/* Probably somebody pulled the plug out.  Not much we can do. */
-	printk(KERN_ERR "c-qcam: ready1 timeout (%d) %x %x\n", value,
-	       parport_read_status(qcam->pport),
-	       parport_read_control(qcam->pport));
-	return 1;
-}
-
-static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value)
-{
-	unsigned long oldjiffies = jiffies;
-	unsigned int i;
-
-	for (oldjiffies = jiffies; (jiffies - oldjiffies) < (HZ/25); )
-		if (qcam_ready2(qcam) == value)
-			return 0;
-
-	/* If the camera didn't respond within 1/25 second, poll slowly 
-	   for a while. */
-	for (i = 0; i < 50; i++)
-	{
-		if (qcam_ready2(qcam) == value)
-			return 0;
-		current->state=TASK_INTERRUPTIBLE;
-		schedule_timeout(HZ/10);
-	}
-
-	/* Probably somebody pulled the plug out.  Not much we can do. */
-	printk(KERN_ERR "c-qcam: ready2 timeout (%d) %x %x %x\n", value,
-	       parport_read_status(qcam->pport),
-	       parport_read_control(qcam->pport),
-	       parport_read_data(qcam->pport));
-	return 1;
-}
-
-static int qcam_read_data(struct qcam_device *qcam)
-{
-	unsigned int idata;
-	qcam_set_ack(qcam, 0);
-	if (qcam_await_ready1(qcam, 1)) return -1;
-	idata = parport_read_status(qcam->pport) & 0xf0;
-	qcam_set_ack(qcam, 1);
-	if (qcam_await_ready1(qcam, 0)) return -1;
-	idata |= (parport_read_status(qcam->pport) >> 4);
-	return idata;
-}
-
-static int qcam_write_data(struct qcam_device *qcam, unsigned int data)
-{
-	unsigned int idata;
-	parport_write_data(qcam->pport, data);
-	idata = qcam_read_data(qcam);
-	if (data != idata) 
-	{
-		printk(KERN_WARNING "cqcam: sent %x but received %x\n", data, 
-		       idata);
-		return 1;
-	} 
-	return 0;
-}
-
-static inline int qcam_set(struct qcam_device *qcam, unsigned int cmd, unsigned int data)
-{
-	if (qcam_write_data(qcam, cmd))
-		return -1;
-	if (qcam_write_data(qcam, data))
-		return -1;
-	return 0;
-}
-
-static inline int qcam_get(struct qcam_device *qcam, unsigned int cmd)
-{
-	if (qcam_write_data(qcam, cmd))
-		return -1;
-	return qcam_read_data(qcam);
-}
-
-static int qc_detect(struct qcam_device *qcam)
-{
-	unsigned int stat, ostat, i, count = 0;
-
-	/* The probe routine below is not very reliable.  The IEEE-1284
-	   probe takes precedence. */
-	/* XXX Currently parport provides no way to distinguish between
-	   "the IEEE probe was not done" and "the probe was done, but
-	   no device was found".  Fix this one day. */
-	if (qcam->pport->probe_info[0].class == PARPORT_CLASS_MEDIA
-	    && qcam->pport->probe_info[0].model
-	    && !strcmp(qcam->pdev->port->probe_info[0].model, 
-		       "Color QuickCam 2.0")) {
-		printk(KERN_DEBUG "QuickCam: Found by IEEE1284 probe.\n");
-		return 1;
-	}
-	
-	if (probe < 2)
-		return 0;
-
-	parport_write_control(qcam->pport, 0xc);
-
-	/* look for a heartbeat */
-	ostat = stat = parport_read_status(qcam->pport);
-	for (i=0; i<250; i++) 
-	{
-		mdelay(1);
-		stat = parport_read_status(qcam->pport);
-		if (ostat != stat) 
-		{
-			if (++count >= 3) return 1;
-			ostat = stat;
-		}
-	}
-
-	/* Reset the camera and try again */
-	parport_write_control(qcam->pport, 0xc);
-	parport_write_control(qcam->pport, 0x8);
-	mdelay(1);
-	parport_write_control(qcam->pport, 0xc);
-	mdelay(1);
-	count = 0;
-
-	ostat = stat = parport_read_status(qcam->pport);
-	for (i=0; i<250; i++) 
-	{
-		mdelay(1);
-		stat = parport_read_status(qcam->pport);
-		if (ostat != stat) 
-		{
-			if (++count >= 3) return 1;
-			ostat = stat;
-		}
-	}
-
-	/* no (or flatline) camera, give up */
-	return 0;
-}
-
-static void qc_reset(struct qcam_device *qcam)
-{
-	parport_write_control(qcam->pport, 0xc);
-	parport_write_control(qcam->pport, 0x8);
-	mdelay(1);
-	parport_write_control(qcam->pport, 0xc);
-	mdelay(1);          
-}
-
-/* Reset the QuickCam and program for brightness, contrast,
- * white-balance, and resolution. */
-
-static void qc_setup(struct qcam_device *q)
-{
-	qc_reset(q);
-
-	/* Set the brightness.  */
-       	qcam_set(q, 11, q->brightness);
-
-	/* Set the height and width.  These refer to the actual
-	   CCD area *before* applying the selected decimation.  */
-	qcam_set(q, 17, q->ccd_height);
-	qcam_set(q, 19, q->ccd_width / 2);
-
-	/* Set top and left.  */
-	qcam_set(q, 0xd, q->top);
-	qcam_set(q, 0xf, q->left);
-
-	/* Set contrast and white balance.  */
-	qcam_set(q, 0x19, q->contrast);
-	qcam_set(q, 0x1f, q->whitebal);
-	
-	/* Set the speed.  */
-	qcam_set(q, 45, 2);
-}
-
-/* Read some bytes from the camera and put them in the buffer. 
-   nbytes should be a multiple of 3, because bidirectional mode gives
-   us three bytes at a time.  */
-
-static unsigned int qcam_read_bytes(struct qcam_device *q, unsigned char *buf, unsigned int nbytes)
-{
-	unsigned int bytes = 0;
-
-	qcam_set_ack(q, 0);
-	if (q->bidirectional)
-	{
-		/* It's a bidirectional port */
-		while (bytes < nbytes)
-		{
-			unsigned int lo1, hi1, lo2, hi2;
-			unsigned char r, g, b;
-
-			if (qcam_await_ready2(q, 1)) return bytes;
-			lo1 = parport_read_data(q->pport) >> 1;
-			hi1 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10;
-			qcam_set_ack(q, 1);
-			if (qcam_await_ready2(q, 0)) return bytes;
-			lo2 = parport_read_data(q->pport) >> 1;
-			hi2 = ((parport_read_status(q->pport) >> 3) & 0x1f) ^ 0x10;
-			qcam_set_ack(q, 0);
-			r = (lo1 | ((hi1 & 1)<<7));
-			g = ((hi1 & 0x1e)<<3) | ((hi2 & 0x1e)>>1);
-			b = (lo2 | ((hi2 & 1)<<7));
-			if (force_rgb) {
-				buf[bytes++] = r;
-				buf[bytes++] = g;
-				buf[bytes++] = b;
-			} else {
-				buf[bytes++] = b;
-				buf[bytes++] = g;
-				buf[bytes++] = r;
-			}
-		}
-	}
-	else
-	{
-		/* It's a unidirectional port */
-		int i = 0, n = bytes;
-		unsigned char rgb[3];
-
-		while (bytes < nbytes)
-		{
-			unsigned int hi, lo;
-
-			if (qcam_await_ready1(q, 1)) return bytes;
-			hi = (parport_read_status(q->pport) & 0xf0);
-			qcam_set_ack(q, 1);
-			if (qcam_await_ready1(q, 0)) return bytes;
-			lo = (parport_read_status(q->pport) & 0xf0);
-			qcam_set_ack(q, 0);
-			/* flip some bits */
-			rgb[(i = bytes++ % 3)] = (hi | (lo >> 4)) ^ 0x88;
-			if (i >= 2) {
-get_fragment:
-				if (force_rgb) {
-					buf[n++] = rgb[0];
-					buf[n++] = rgb[1];
-					buf[n++] = rgb[2];
-				} else {
-					buf[n++] = rgb[2];
-					buf[n++] = rgb[1];
-					buf[n++] = rgb[0];
-				}
-			}
-		}
-		if (i) {
-			i = 0;
-			goto get_fragment;
-		}
-	}
-	return bytes;
-}
-
-#define BUFSZ	150
-
-static long qc_capture(struct qcam_device *q, char *buf, unsigned long len)
-{
-	unsigned lines, pixelsperline, bitsperxfer;
-	unsigned int is_bi_dir = q->bidirectional;
-	size_t wantlen, outptr = 0;
-	char tmpbuf[BUFSZ];
-
-	if (verify_area(VERIFY_WRITE, buf, len))
-		return -EFAULT;
-
-	/* Wait for camera to become ready */
-	for (;;)
-	{
-		int i = qcam_get(q, 41);
-		if (i == -1) {
-			qc_setup(q);
-			return -EIO;
-		}
-		if ((i & 0x80) == 0)
-			break;
-		else
-			schedule();
-	}
-
-	if (qcam_set(q, 7, (q->mode | (is_bi_dir?1:0)) + 1))
-		return -EIO;
-	
-	lines = q->height;
-	pixelsperline = q->width;
-	bitsperxfer = (is_bi_dir) ? 24 : 8;
-
-	if (is_bi_dir)
-	{
-		/* Turn the port around */
-		parport_data_reverse(q->pport);
-		mdelay(3);
-		qcam_set_ack(q, 0);
-		if (qcam_await_ready1(q, 1)) {
-			qc_setup(q);
-			return -EIO;
-		}
-		qcam_set_ack(q, 1);
-		if (qcam_await_ready1(q, 0)) {
-			qc_setup(q);
-			return -EIO;
-		}
-	}
-
-	wantlen = lines * pixelsperline * 24 / 8;
-
-	while (wantlen)
-	{
-		size_t t, s;
-		s = (wantlen > BUFSZ)?BUFSZ:wantlen;
-		t = qcam_read_bytes(q, tmpbuf, s);
-		if (outptr < len)
-		{
-			size_t sz = len - outptr;
-			if (sz > t) sz = t;
-			if (__copy_to_user(buf+outptr, tmpbuf, sz))
-				break;
-			outptr += sz;
-		}
-		wantlen -= t;
-		if (t < s)
-			break;
-		if (current->need_resched)
-			schedule();
-	}
-
-	len = outptr;
-
-	if (wantlen)
-	{
-		printk("qcam: short read.\n");
-		if (is_bi_dir)
-			parport_data_forward(q->pport);
-		qc_setup(q);
-		return len;
-	}
-
-	if (is_bi_dir)
-	{
-		int l;
-		do {
-			l = qcam_read_bytes(q, tmpbuf, 3);
-			if (current->need_resched)
-				schedule();
-		} while (l && (tmpbuf[0] == 0x7e || tmpbuf[1] == 0x7e || tmpbuf[2] == 0x7e));
-		if (force_rgb) {
-			if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
-				printk("qcam: bad EOF\n");
-		} else {
-			if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
-				printk("qcam: bad EOF\n");
-		}
-		qcam_set_ack(q, 0);
-		if (qcam_await_ready1(q, 1))
-		{
-			printk("qcam: no ack after EOF\n");
-			parport_data_forward(q->pport);
-			qc_setup(q);
-			return len;
-		}
-		parport_data_forward(q->pport);
-		mdelay(3);
-		qcam_set_ack(q, 1);
-		if (qcam_await_ready1(q, 0))
-		{
-			printk("qcam: no ack to port turnaround\n");
-			qc_setup(q);
-			return len;
-		}
-	}
-	else
-	{
-		int l;
-		do {
-			l = qcam_read_bytes(q, tmpbuf, 1);
-			if (current->need_resched)
-				schedule();
-		} while (l && tmpbuf[0] == 0x7e);
-		l = qcam_read_bytes(q, tmpbuf+1, 2);
-		if (force_rgb) {
-			if (tmpbuf[0] != 0xe || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xf)
-				printk("qcam: bad EOF\n");
-		} else {
-			if (tmpbuf[0] != 0xf || tmpbuf[1] != 0x0 || tmpbuf[2] != 0xe)
-				printk("qcam: bad EOF\n");
-		}
-	}
-
-	qcam_write_data(q, 0);
-	return len;
-}
-
-/*
- *	Video4linux interfacing
- */
-
-static int qcam_open(struct video_device *dev, int flags)
-{
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static void qcam_close(struct video_device *dev)
-{
-	MOD_DEC_USE_COUNT;
-}
-
-static int qcam_init_done(struct video_device *dev)
-{
-	return 0;
-}
-
-static long qcam_write(struct video_device *v, const char *buf, unsigned long count, int noblock)
-{
-	return -EINVAL;
-}
-
-static int qcam_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
-{
-	struct qcam_device *qcam=(struct qcam_device *)dev;
-	
-	switch(cmd)
-	{
-		case VIDIOCGCAP:
-		{
-			struct video_capability b;
-			strcpy(b.name, "Quickcam");
-			b.type = VID_TYPE_CAPTURE|VID_TYPE_SCALES;
-			b.channels = 1;
-			b.audios = 0;
-			b.maxwidth = 320;
-			b.maxheight = 240;
-			b.minwidth = 80;
-			b.minheight = 60;
-			if(copy_to_user(arg, &b,sizeof(b)))
-				return -EFAULT;
-			return 0;
-		}
-		case VIDIOCGCHAN:
-		{
-			struct video_channel v;
-			if(copy_from_user(&v, arg, sizeof(v)))
-				return -EFAULT;
-			if(v.channel!=0)
-				return -EINVAL;
-			v.flags=0;
-			v.tuners=0;
-			/* Good question.. its composite or SVHS so.. */
-			v.type = VIDEO_TYPE_CAMERA;
-			strcpy(v.name, "Camera");
-			if(copy_to_user(arg, &v, sizeof(v)))
-				return -EFAULT;
-			return 0;
-		}
-		case VIDIOCSCHAN:
-		{
-			int v;
-			if(copy_from_user(&v, arg,sizeof(v)))
-				return -EFAULT;
-			if(v!=0)
-				return -EINVAL;
-			return 0;
-		}
-		case VIDIOCGTUNER:
-		{
-			struct video_tuner v;
-			if(copy_from_user(&v, arg, sizeof(v))!=0)
-				return -EFAULT;
-			if(v.tuner)
-				return -EINVAL;
-			strcpy(v.name, "Format");
-			v.rangelow=0;
-			v.rangehigh=0;
-			v.flags= 0;
-			v.mode = VIDEO_MODE_AUTO;
-			if(copy_to_user(arg,&v,sizeof(v))!=0)
-				return -EFAULT;
-			return 0;
-		}
-		case VIDIOCSTUNER:
-		{
-			struct video_tuner v;
-			if(copy_from_user(&v, arg, sizeof(v))!=0)
-				return -EFAULT;
-			if(v.tuner)
-				return -EINVAL;
-			if(v.mode!=VIDEO_MODE_AUTO)
-				return -EINVAL;
-			return 0;
-		}
-		case VIDIOCGPICT:
-		{
-			struct video_picture p;
-			p.colour=0x8000;
-			p.hue=0x8000;
-			p.brightness=qcam->brightness<<8;
-			p.contrast=qcam->contrast<<8;
-			p.whiteness=qcam->whitebal<<8;
-			p.depth=24;
-			p.palette=VIDEO_PALETTE_RGB24;
-			if(copy_to_user(arg, &p, sizeof(p)))
-				return -EFAULT;
-			return 0;
-		}
-		case VIDIOCSPICT:
-		{
-			struct video_picture p;
-			if(copy_from_user(&p, arg, sizeof(p)))
-				return -EFAULT;
-
-			/*
-			 *	Sanity check args
-			 */
-			if (p.depth != 24 || p.palette != VIDEO_PALETTE_RGB24)
-				return -EINVAL;
-			
-			/*
-			 *	Now load the camera.
-			 */
-			qcam->brightness = p.brightness>>8;
-			qcam->contrast = p.contrast>>8;
-			qcam->whitebal = p.whiteness>>8;
-
-			down(&qcam->lock);			
-			parport_claim_or_block(qcam->pdev);
-			qc_setup(qcam); 
-			parport_release(qcam->pdev);
-			up(&qcam->lock);
-			return 0;
-		}
-		case VIDIOCSWIN:
-		{
-			struct video_window vw;
-
-			if(copy_from_user(&vw, arg,sizeof(vw)))
-				return -EFAULT;
-			if(vw.flags)
-				return -EINVAL;
-			if(vw.clipcount)
-				return -EINVAL;
-			if(vw.height<60||vw.height>240)
-				return -EINVAL;
-			if(vw.width<80||vw.width>320)
-				return -EINVAL;
-				
-			qcam->width = 80;
-			qcam->height = 60;
-			qcam->mode = QC_DECIMATION_4;
-			
-			if(vw.width>=160 && vw.height>=120)
-			{
-				qcam->width = 160;
-				qcam->height = 120;
-				qcam->mode = QC_DECIMATION_2;
-			}
-			if(vw.width>=320 && vw.height>=240)
-			{
-				qcam->width = 320;
-				qcam->height = 240;
-				qcam->mode = QC_DECIMATION_1;
-			}
-			qcam->mode |= QC_MILLIONS;
-#if 0
-			if(vw.width>=640 && vw.height>=480)
-			{
-				qcam->width = 640;
-				qcam->height = 480;
-				qcam->mode = QC_BILLIONS | QC_DECIMATION_1;
-			}
-#endif
-			/* Ok we figured out what to use from our 
-			   wide choice */
-			down(&qcam->lock);
-			parport_claim_or_block(qcam->pdev);
-			qc_setup(qcam);
-			parport_release(qcam->pdev);
-			up(&qcam->lock);
-			return 0;
-		}
-		case VIDIOCGWIN:
-		{
-			struct video_window vw;
-			vw.x=0;
-			vw.y=0;
-			vw.width=qcam->width;
-			vw.height=qcam->height;
-			vw.chromakey=0;
-			vw.flags=0;
-			if(copy_to_user(arg, &vw, sizeof(vw)))
-				return -EFAULT;
-			return 0;
-		}
-		case VIDIOCCAPTURE:
-			return -EINVAL;
-		case VIDIOCGFBUF:
-			return -EINVAL;
-		case VIDIOCSFBUF:
-			return -EINVAL;
-		case VIDIOCKEY:
-			return 0;
-		case VIDIOCGFREQ:
-			return -EINVAL;
-		case VIDIOCSFREQ:
-			return -EINVAL;
-		case VIDIOCGAUDIO:
-			return -EINVAL;
-		case VIDIOCSAUDIO:
-			return -EINVAL;
-		default:
-			return -ENOIOCTLCMD;
-	}
-	return 0;
-}
-
-static long qcam_read(struct video_device *v, char *buf, unsigned long count,  int noblock)
-{
-	struct qcam_device *qcam=(struct qcam_device *)v;
-	int len;
-
-	down(&qcam->lock);
-	parport_claim_or_block(qcam->pdev);
-	/* Probably should have a semaphore against multiple users */
-	len = qc_capture(qcam, buf,count); 
-	parport_release(qcam->pdev);
-	up(&qcam->lock);
-	return len;
-}
-
-/* video device template */
-static struct video_device qcam_template=
-{
-	"Colour QuickCam",
-	VID_TYPE_CAPTURE,
-	VID_HARDWARE_QCAM_C,
-	qcam_open,
-	qcam_close,
-	qcam_read,
-	qcam_write,
-	NULL,
-	qcam_ioctl,
-	NULL,
-	qcam_init_done,
-	NULL,
-	0,
-	0
-};
-
-/* Initialize the QuickCam driver control structure. */
-
-static struct qcam_device *qcam_init(struct parport *port)
-{
-	struct qcam_device *q;
-	
-	q = kmalloc(sizeof(struct qcam_device), GFP_KERNEL);
-	if(q==NULL)
-		return NULL;
-
-	q->pport = port;
-	q->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
-					  NULL, 0, NULL);
-
-	q->bidirectional = (q->pport->modes & PARPORT_MODE_TRISTATE)?1:0;
-
-	if (q->pdev == NULL) 
-	{
-		printk(KERN_ERR "c-qcam: couldn't register for %s.\n",
-		       port->name);
-		kfree(q);
-		return NULL;
-	}
-	
-	memcpy(&q->vdev, &qcam_template, sizeof(qcam_template));
-
-	init_MUTEX(&q->lock);
-	q->width = q->ccd_width = 320;
-	q->height = q->ccd_height = 240;
-	q->mode = QC_MILLIONS | QC_DECIMATION_1;
-	q->contrast = 192;
-	q->brightness = 240;
-	q->whitebal = 128;
-	q->top = 1;
-	q->left = 14;
-	return q;
-}
-
-static struct qcam_device *qcams[MAX_CAMS];
-static unsigned int num_cams = 0;
-
-int init_cqcam(struct parport *port)
-{
-	struct qcam_device *qcam;
-
-	if (parport[0] != -1)
-	{
-		/* The user gave specific instructions */
-		int i, found = 0;
-		for (i = 0; i < MAX_CAMS && parport[i] != -1; i++)
-		{
-			if (parport[0] == port->number)
-				found = 1;
-		}
-		if (!found)
-			return -ENODEV;
-	}
-
-	if (num_cams == MAX_CAMS)
-		return -ENOSPC;
-
-	qcam = qcam_init(port);
-	if (qcam==NULL)
-		return -ENODEV;
-		
-	parport_claim_or_block(qcam->pdev);
-
-	qc_reset(qcam);
-	
-	if (probe && qc_detect(qcam)==0)
-	{
-		parport_release(qcam->pdev);
-		parport_unregister_device(qcam->pdev);
-		kfree(qcam);
-		return -ENODEV;
-	}
-
-	qc_setup(qcam);
-
-	parport_release(qcam->pdev);
-	
-	if (video_register_device(&qcam->vdev, VFL_TYPE_GRABBER)==-1)
-	{
-		printk(KERN_ERR "Unable to register Colour QuickCam on %s\n",
-		       qcam->pport->name);
-		parport_unregister_device(qcam->pdev);
-		kfree(qcam);
-		return -ENODEV;
-	}
-
-	printk(KERN_INFO "video%d: Colour QuickCam found on %s\n", 
-	       qcam->vdev.minor, qcam->pport->name);
-	
-	qcams[num_cams++] = qcam;
-
-	return 0;
-}
-
-void close_cqcam(struct qcam_device *qcam)
-{
-	video_unregister_device(&qcam->vdev);
-	parport_unregister_device(qcam->pdev);
-	kfree(qcam);
-}
-
-static void cq_attach(struct parport *port)
-{
-	init_cqcam(port);
-}
-
-static void cq_detach(struct parport *port)
-{
-	/* Write this some day. */
-}
-
-static struct parport_driver cqcam_driver = {
-	"cqcam",
-	cq_attach,
-	cq_detach,
-	NULL
-};
-
-static int __init cqcam_init (void)
-{
-	printk(BANNER "\n");
-
-	return parport_register_driver(&cqcam_driver);
-}
-
-static void __exit cqcam_cleanup (void)
-{
-	unsigned int i;
-
-	for (i = 0; i < num_cams; i++)
-		close_cqcam(qcams[i]);
-
-	parport_unregister_driver(&cqcam_driver);
-}
-
-MODULE_AUTHOR("Philip Blundell <philb@gnu.org>");
-MODULE_DESCRIPTION(BANNER);
-MODULE_PARM_DESC(parport ,"parport=<auto|n[,n]...> for port detection method\n\
-probe=<0|1|2> for camera detection method\n\
-force_rgb=<0|1> for RGB data format (default BGR)");
-MODULE_PARM(parport, "1-" __MODULE_STRING(MAX_CAMS) "i");
-MODULE_PARM(probe, "i");
-MODULE_PARM(force_rgb, "i");
-
-module_init(cqcam_init);
-module_exit(cqcam_cleanup);