Re: [PATCH v5] V4L2: soc_camera: Renesas R-Car VIN driver

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Hi Sergei, Vladimir,

> >> Subject: [PATCH v5] V4L2: soc_camera: Renesas R-Car VIN driver
> 
> >> From: Vladimir Barinov <vladimir.barinov@xxxxxxxxxxxxxxxxxx>
> 
> >> Add Renesas R-Car VIN (Video In) V4L2 driver.
> 
> >> Based on the patch by Phil Edworthy <phil.edworthy@xxxxxxxxxxx>.
> 
> > I've seen old patches that add VIN to the Marzen board, do you have an
> > updated version?
> 
>     The last version of that patchset is 4, here it is archived:
> 
> http://marc.info/?l=linux-sh&m=136865481429756
> http://marc.info/?l=linux-sh&m=136865499029807
> http://marc.info/?l=linux-sh&m=136865509129843
> http://marc.info/?l=linux-sh&m=136865520029900

First of all, thank you for your work on this driver.

I have tried your patches on the Marzen board using an Expansion Board 
with an OmniVision 10635 camera (progressive BT656), using an out-of-tree 
driver. There appears to be an issue with the interrupt handling compared 
to my original driver.

Using a simple test app I wrote, I get an unhandled irq if the app does 
some work after stopping the capture. In this case, the work after capture 
is storing a captured image to a file. As a dirty hack to see what's 
actually being captured, I just commented out the code that checks the 
interrupt status:
//      if (!int_status)
//              goto done;
This allows me to save the captured image. However, this shows about 
2/3rds valid picture data (though it looks vertically shifted), with the 
rest black. Also, a couple of other lines are black.

I realise that you don't have the Marzen Expansion Board & don't have an 
ov10635 camera. However, unfortunately, I don't have much time that I can 
spend on this. Do any of the boards you have use a progressive camera?

Regards
Phil
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