XO Camera

Hans Verkuil hverkuil at xs4all.nl
Fri Apr 24 04:03:19 EDT 2009

> Hi Jon,
>> [Sorry for the slow response, I am losing the battle with my inbox in a
>> spectacular way...]
>>>    > I've been playing with rawhide on the XO this morning now that
>>>    > I've finally got it booting of the SD easily and regularly. It
>>>    > seems the camera doesn't work either in the record app or in
>>>    > cheese. Looking at the dmesg output it looks like the sensor
>>>    > isn't supported in the rawhide kernel. Is there a kernel patch
>>>    > that needs to go upstream for support for this as well?
>>>    > dmesg output: ov7670 0-0042: chip found @ 0x84 (cafe_ccic)
>>>    > cafe1000-ccic 0000:00:0c.2: Unsupported sensor type
>>>    > 0x1<4>cafe1000-ccic: probe of 0000:00:0c.2 failed with error -22
>>> This support should be already upstream.  I'd try building the module
>>> reverted to Linus cd257a6f4dd, in case one of the recent commits to
>>> ov7670/cafe_ccic broke detection.  Jon, any ideas what this might be?
>> Which kernel are you running?
> The kernel is the rawhide variant from about a week ago.
>> Hans Verkuil (CCed) made a lot of changes for 2.6.30; I meant to try
>> them out, but, in the time I had available, I never did succeed in
>> getting a contemporary system running on my XO.  So there is a lot of
>> untested code in that driver in 2.6.30; given the nature of the
>> changes, a detection failure seems like a likely problem.
> OK, not sure whether the rawhide kernel has pulled any .30 changes in
> but its always possible.

I hope not. To be honest, I can't imagine them doing that.

>> The fact that it's seeing something at 0x84 is a little suspicious.
>> Hans has an XO now; I'm not sure how far he's gotten in trying things
>> out.

I did have a power plug converter for US -> EU power sockets, but it was
apparently made by people who never actually seen an EU power socket since
it didn't fit. So I need to get myself a proper converter first before I
can try and test 2.6.30 on it :-(



> Cool. Thanks for the update.
> Peter

Hans Verkuil - video4linux developer - sponsored by TANDBERG

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