On Thu, 4 Nov 2010, Laurent Pinchart wrote:
> Hi Bastian,
Hi Bastian, all
Have you or anyone ben successful getting mt9p031 to work with the omap3
ISP driver? If so - can I have the code? Or even if it never worked -
could you post the latest version of your driver and platform bindings?
Thanks
Guennadi
>
> On Tuesday 02 November 2010 11:31:28 Bastian Hecht wrote:
> > >> I am the first guy needing a 12 bit-bus?
> > >
> > > Yes you are :-) You will need to implement 12 bit support in the ISP
> > > driver, or start by hacking the sensor driver to report a 10 bit format
> > > (2 bits will be lost but you should still be able to capture an image).
> >
> > Isn't that an "officially" supported procedure to drop the least
> > significant bits?
> > You gave me the isp configuration
> > .bus = { .parallel = {
> > .data_lane_shift = 1,
> > ...
> > that instructs the isp to use 10 of the 12 bits.
>
> If you don't need the full 12 bits, sure, that should work.
>
> > >> Second thing is, the yavta app now gets stuck while dequeuing a buffer.
> > >>
> > >> strace ./yavta -f SGRBG10 -s 2592x1944 -n 4 --capture=4 --skip 3 -F
> > >> /dev/video2 ...
> > >> ioctl(3, VIDIOC_QBUF, 0xbec111cc) = 0
> > >> ioctl(3, VIDIOC_QBUF, 0xbec111cc) = 0
> > >> ioctl(3, VIDIOC_QBUF, 0xbec111cc) = 0
> > >> ioctl(3, VIDIOC_QBUF, 0xbec111cc) = 0
> > >> ioctl(3, VIDIOC_STREAMON, 0xbec11154) = 0
> > >> ioctl(3, VIDIOC_DQBUF
> > >>
> > >> strace gets stuck in mid of this line.
> >
> > Somehow the ISP_ENABLE_IRQ register was reset at some point that is
> > unclear to me. When I put it on again manually yavta succeeds to read
> > the frames.
>
> That's weird. Let me know if you can reproduce the problem.
>
> > Unfortunately the image consists of black pixels only. We found out that the
> > 2.8V voltage regulator got broken in the course of development - the 1.8V
> > logic still worked but the ADC did not...
> >
> > But the heck - I was never that close :)
>
> --
> Regards,
>
> Laurent Pinchart
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---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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