Comment 23 for bug 22070

Good news and bad news.
I've managed to get my quickcam messenger (0x08f6) working, but with the qc-usb-messenger-1.8 driver (qcmessenger.ko), not the 0.6.6 one on which Ubuntu's quickcam.ko is based.
I've spent an hour or so comparing the sources to see if I can fix the 0.6.6
driver, but it ain't as simple as applying the same fixes or some simple
fixes to qc_stv_set() or somesuch.
See above (https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.15/+bug/22070/comments/21) for more details
I haven't got the hardware specs, which leaves me out of my depth to see the relevant differences
between both drivers.

 Ubuntu (based on qc-usb-0.6.6, sensors: hdcs1000, hdcs1020, pb0100, vv6410):
0x046D:0x0840 QuickCam Express
0x046D:0x0850 LEGO cam / QuickCam Web
0x046D:0x0870 Dexxa WebCam USB
0x046D:0x08F6 Logitech QuickCam Messenger
 but in fact, the Messenger won't work with this driver.

 qc-usb-messenger-1.8 (vv6450 sensor) :
0x046D:0x08F0 QuickCam Messenger
0x046D:0x08F5 QuickCam Communicate
0x046D:0x08F6 QuickCam Messenger (new)
0x046D:0x08DA QuickCam Messenger (new)
Will work, get the sources here: http://home.mag.cx/messenger/
Then apply the patch i've attached here:

patch -p1 < qc-usb-messenger-1.8_2.6.27-v4l.patch
make all
insmod ./qcmessenger.ko

You will get a V4L device (not a V4L2) and it works in xawtv and Ekiga.

The other bad news is that the current Skype version (2.0.0.72) will crash when you will try to use the webcam.
Other people experienced the same, looks like there's no fix for that (yet).