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[ts-7000] Re: TS-7800 ioctl issues while using v4l and webcams

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Subject: [ts-7000] Re: TS-7800 ioctl issues while using v4l and webcams
From: "charliem_1216" <>
Date: Sat, 29 Mar 2008 15:58:01 -0000
Hi --

--- In  "tigordito" <> wrote:
>
> Dear community,
> 
> We had in the past an application based on webcam-server running 
fine 
> on the TS-7300 (kernel 2.4.x) with two old webcams using the pwc 
9.x 
> driver.
> 
> Now, we have take a step into a brand new TS-7800 (btw there is no 
> adequate manual or enough information, we are pretty disappointed 
> about the lack of documentation on the FPGA but that's another 
story).
> 
> About my issue, so we tried our application on our TS-7800 (kernel 
> 2.6.21) but it's not working.  The webcam is well recognized and 
> cat /dev/video0 gives an output.  
> 
> But when launching the application we are getting ioctl issues:
> 
> :root# webcam-server
> ioctl (VIDIOCGCAP): Invalid argument
> ioctl (VIDIOCSPICT): Invalid argument
> error setting video device parameters, using defaults
> ioctl (VIDIOCGCAP): Invalid argument
> ioctl (VIDIOCSPICT): Invalid argument
> not a valid video device? quitting.
> 
> 
> What could be done ?
> A video for linux version issue, a pwc driver issue ?
> Does anyone can suggest another distribution to put on the last 
> partition of the SD card ?
> 
> We tried all different os version available on the ftp, 
crosscompiled 
> with all different crosstool available, still the same errors.
> 
> 
> Thanks for your help as the support staff doesn't reply for weeks,
> 
> Happy Easter,
> Francois
>

Sorry to jump in late, but isn't the 9.x version of pwc quite old?  
IIRC, that is the one that needed a binary blob to work well.  It 
would work without it, but you needed the binary blob to get full 
functionality.

I would be very surprised if that worked on a 2.6 kernel.  Have you 
tried the 10.0.12 driver (or a later snapshot)?  It does not need a 
binary blob, works with many more cameras, and is designed for v4l2 
in 2.6 kernels:
http://www.saillard.org/linux/pwc/

Regards, .......... Charlie




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