patch by Simon Evans <spse@secret.org.uk> that adds a Konica USB webcam driver

drivers/usb/Config.help

@@ -505,6 +505,21 @@ CONFIG_USB_DABUSB
   The module will be called dabusb.o.  If you want to compile it as a
   module, say M here and read <file:Documentation/modules.txt>.
 
+CONFIG_USB_KONICAWC
+  Say Y here if you want support for webcams based on a Konica
+  chipset. This is known to work with the Intel YC76 webcam.
+
+  This driver uses the Video For Linux API.  You must enable
+  (Y or M in config) Video For Linux (under Character Devices)
+  to use this driver.  Information on this API and pointers to
+  "v4l" programs may be found on the WWW at
+  <http://roadrunner.swansea.uk.linux.org/v4l.shtml>.
+
+  This code is also available as a module ( = code which can be
+  inserted in and removed from the running kernel whenever you want).
+  The module will be called konicawc.o. If you want to compile it as
+  a module, say M here and read <file:Documentation/modules.txt>.
+
 CONFIG_USB_USBNET
   This driver supports network links over USB with USB "Network"
   or "data transfer" cables, often used to network laptops to PCs.

drivers/usb/Config.in

@@ -80,6 +80,7 @@ else
    dep_tristate '  USB 3com HomeConnect (aka vicam) support (EXPERIMENTAL)' CONFIG_USB_VICAM $CONFIG_USB $CONFIG_VIDEO_DEV $CONFIG_EXPERIMENTAL
    dep_tristate '  D-Link USB FM radio support (EXPERIMENTAL)' CONFIG_USB_DSBR $CONFIG_USB $CONFIG_VIDEO_DEV $CONFIG_EXPERIMENTAL
    dep_tristate '  DABUSB driver' CONFIG_USB_DABUSB $CONFIG_USB
+   dep_tristate '  USB Konica Webcam support' CONFIG_USB_KONICAWC $CONFIG_USB $CONFIG_VIDEO_DEV
 fi
 
 comment 'USB Network adaptors'

drivers/usb/Makefile

@@ -64,6 +64,7 @@ obj-$(CONFIG_USB_ACM)		+= acm.o
 obj-$(CONFIG_USB_PRINTER)	+= printer.o
 obj-$(CONFIG_USB_AUDIO)		+= audio.o
 obj-$(CONFIG_USB_IBMCAM)	+= ibmcam.o usbvideo.o ultracam.o
+obj-$(CONFIG_USB_KONICAWC)	+= konicawc.o usbvideo.o
 obj-$(CONFIG_USB_PWC)		+= pwc.o
 obj-$(CONFIG_USB_DC2XX)		+= dc2xx.o
 obj-$(CONFIG_USB_MDC800)	+= mdc800.o

drivers/usb/usbvideo.c

@@ -791,6 +791,10 @@ int usbvideo_register(
 		cams->cb.getFrame = usbvideo_GetFrame;
 	if (cams->cb.disconnect == NULL)
 		cams->cb.disconnect = usbvideo_Disconnect;
+	if (cams->cb.startDataPump == NULL)
+		cams->cb.startDataPump = usbvideo_StartDataPump;
+	if (cams->cb.stopDataPump == NULL)
+		cams->cb.stopDataPump = usbvideo_StopDataPump;
 #if USES_PROC_FS
 	/*
 	 * If both /proc fs callbacks are NULL then we assume that the driver
@@ -963,7 +967,7 @@ void usbvideo_Disconnect(struct usb_device *dev, void *ptr)
 	uvd->remove_pending = 1; /* Now all ISO data will be ignored */
 
 	/* At this time we ask to cancel outstanding URBs */
-	usbvideo_StopDataPump(uvd);
+	GET_CALLBACK(uvd, stopDataPump)(uvd);
 
 	for (i=0; i < USBVIDEO_NUMSBUF; i++)
 		usb_free_urb(uvd->sbuf[i].urb);
@@ -1299,7 +1303,7 @@ int usbvideo_v4l_open(struct video_device *dev, int flags)
 	if (errCode == 0) {
 		/* Start data pump if we have valid endpoint */
 		if (uvd->video_endp != 0)
-			errCode = usbvideo_StartDataPump(uvd);
+			errCode = GET_CALLBACK(uvd, startDataPump)(uvd);
 		if (errCode == 0) {
 			if (VALID_CALLBACK(uvd, setupOnOpen)) {
 				if (uvd->debug > 1)
@@ -1349,8 +1353,8 @@ void usbvideo_v4l_close(struct video_device *dev)
 	if (uvd->debug > 1)
 		info("%s($%p)", proc, dev);
 
-	down(&uvd->lock);	
-	usbvideo_StopDataPump(uvd);
+	down(&uvd->lock);
+	GET_CALLBACK(uvd, stopDataPump)(uvd);
 	usbvideo_rvfree(uvd->fbuf, uvd->fbuf_size);
 	uvd->fbuf = NULL;
 	RingQueue_Free(&uvd->dp);

drivers/usb/usbvideo.h

@@ -269,6 +269,8 @@ typedef struct {
 	int (*getFrame)(uvd_t *, int);
 	int (*procfs_read)(char *page,char **start,off_t off,int count,int *eof,void *data);
 	int (*procfs_write)(struct file *file,const char *buffer,unsigned long count,void *data);
+	int (*startDataPump)(uvd_t *uvd);
+	void (*stopDataPump)(uvd_t *uvd);
 } usbvideo_cb_t;
 
 struct s_usbvideo_t {