[plug] [SOLVED] Compiling OV511 module with compression for PCVC720K

[Alex Nordstrom]

Okay, so this is a rather old thread, but I strongly dislike not 
following up on an issue with its resolution for the archives.

Monday, 16 January 2006 12:46, Steve Boak wrote:
> On Sun, 15 Jan 2006 09:55 pm, Alex Nordstrom wrote:
> > It's a Philips ToUCam XS PCVC720K. This is the OV518 version of it,
> > which requires the decompression module, whereas the OV511 module
> > shipped with Debian does not feature decompression.
> >
> I'm using a Logitech Quick-Campro 4000 which is internally a
> Phillips, with a locally compiled 2.6.14.1 kernel. The driver I am
> using is the pwc source package from
> http://www.saillard.org/linux/pwc/ - the documentation mentions your
> camera, so I guess it should work for you.
> Unpack it into /usr/src, make and make install, and it 'just works'.

While pwc claims to support PCVC720K, it seems this only applies to the 
PCVC720K, not the PCVC720K. Uh, yeah, that's right. In all their 
wisdom, Philips apparently decided not to change the model number when 
they changed the chipset of the model. I happen to have the "old" model 
using the OV6630 chipset, which is, as far as I can tell, not supported 
by pwc. Thanks for chipping in, though (no pun intended, really).

Not one to give up, I tried once again to compile the upstream code 
today, and for some reason, it worked without any problems. The only 
trouble I ran into was the chip not being detected by the driver, even 
though the device was detected. The solution to this was to manually 
modprobe ovcamchip. I'll see about automating this later on.

So the procedure is this:
- make sure you have the matching linux-headers package for your 
  linux-image package (linux-source is not required)
- download and unpack http://alpha.dyndns.org/ov511/download/2.xx/
  distros/ov511-2.30.tar.bz2 into /usr/local/src/
- make clean && make && make install as root
- plug in the camera (provided all the hotplugging bells and whistles 
  are in place, otherwise modprobe ov511)
- modprobe ovcamchip

I swear it wasn't this easy when I tried it before. I am not sure what 
changed.

Note that the Debian kernel as of this posting still does not include 
decompression support, and ov511-source is still broken, so compiling 
upstream source seems to be the only way.

-- 
Alex Nordstrom
http://lx.n3.net/
Please do not CC me in followups; I am subscribed to plug.
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