Re: SoC camera host drivers

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Hi Dmitry

On Thu, 11 Oct 2012, Dmitry Lavnikevich wrote:

> Hello!
> 
> I'm trying to implement camera support for my i.MX6 board and cannot
> understand a couple of (it seems) simple things according to how it
> all must work.
> 
> My camera is mt9m001 and i can perfectly find and use it's camera
> driver. But as far as I understand, host driver must be loaded too...
> and there is a very few of them. I can find host drivers for
> surprisingly few platforms like pxa_camera, mx1_camera, mx2_camera and
> a few others. But there is no mx6 or something for it. And i cannot
> understand why. Is it means that needed driver just wasn't implemented
> yet and I must write it on my own, or I don't understand something
> essential?

I'm not sure about the state of i.MX6, but have a look at 
drivers/media/platform/coda.c. It is not using soc-camera, and I don't 
seem to find any examples of board files, using that driver... And if you 
need mt9m001, which is (originally) an soc-camera driver, it will have to 
be slightly adjusted to work with other hosts.

Thanks
Guennadi

> Because I can see in kernel meny board specific source files where
> different SoC cameras are enabled but at the same time I cannot find
> needed host drivers. For instance I see in
> arch/arm/mach-mx6/board-mx6q_arm2.c enabled soc camera ov5640 but
> again i cannot find a thing about needed mx6 host driver. Is that
> means that this board camera actually cannot be used because of
> absence of needed host driver or am I missing something?
> 
> Best regards,
> Lavnikevich Dmitry
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---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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