Re: cx231xx: DMA problem on ARM

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Hello Laurent,

Le Mon, 26 Sep 2011 21:02:48 +0200,
Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> a écrit :

> Are you using the MMAP or USERPTR capture method ? If using MMAP, can
> you try (as a test only) to unmap the buffer before queueing it and
> to remap it after dequeuing it ?

So far, we have used VLC, Cheese, or a simple OpenCV based application
to test the V4L2 device on our ARM platform, and I have no idea which
capture method those are using. Is there a very simple V4L test
application that we could use to hack the buffer unmap/remap trick
you're suggesting as a test ?

Regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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