Re: [PATCH 0/2] Add VSP1 devices to DT for r8a7790 and r8a7791

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Devendra,

Please don't drop the linux-sh list when replying.

On Tuesday 16 December 2014 06:48:33 Devendra Talegaonkar wrote:
> Hi,
>
> Thanks for the reply. I have applied the patches & now I am in the process
> of testing the same on the R-car board. But I have one problem. You have
> mentioned that for "vsp1.sh" script, "input" command streams the image data
> to RPF. Does that means, the RGB binaries which you have tested
> (http://www.ideasonboard.org/frame-reference.tar.bz2) can be streamed with
> the script and its output can be seen on DU?

That's correct. You need to use one of the m2d* (m2d, m2d-bru, m2d-crop or 
m2d-scale) commands to the vsp1.sh script.

You will also need to configure the DU using the modetest utility from the 
drm.git repository I've pointed to, using the -P argument to display the plane 
associated with the VSP1 and configuring it with the same size and format as 
the VSP1 LIF output.

> Also I am going to test the BRU with the script you have provided. Can you
> please let us know how to use the same?
> 
> On Tuesday, December 16, 2014 5:19 AM Laurent Pinchart wrote:
> > On Monday 15 December 2014 03:42:59 Devendra Talegaonkar wrote:
> >> Laurent Pinchart writes:
> >>> On Tuesday 30 September 2014 13:47:32 Cao Minh Hiep wrote:
> >>>> Hi Laurent,
> >>>> 
> >>>> We are testing the upstream linux version on Lager.
> >>>> I have tried to test VSP1 driver on r8a7790(Lager).
> >>>> But I don't know how to test it.
> >>>> Could you please tell the method to test it?
> >>> 
> >>> Sure.
> >>> 
> >>> I've attached the test script I use to configure the VSP1 pipeline
> >>> to this e-mail.
> >>> 
> >>> Syntax: vsp1.sh dev cmd [...]
> >>> 
> >>> Supported commands:
> >>>  - m2d | m2d-bru | m2d-crop | m2d-scale | m2m | m2m-crop | m2m-scale
> >>> infmt outfmt
> >>>  - input index infmt
> >>>  - output index outfmt
> >>> 
> >>> The input and output commands will invoke yavta to capture images
> >>> from a WPF (output) or stream images to an RPF (input). You can find
> >>> a tarball with the test frames I use at
> >>> http://www.ideasonboard.org/frame-reference.tar.bz2, but you can
> >>> replace them with any binary test image.
> >> 
> >> Hello,
> >> I am testing VSP1 on lager board. You have mentioned that by invoking
> >> input command, file can be streamed to RPF. Does that mean, If we
> >> stream the file via input command we can seee it on LCD via VSPD0. If
> >> my understanding is correct can you explain how to test that by
> >> setting plane priority? Because VSPD0 can out put the data on predefined
> >> plane.
> >> As I am stuck here, awaiting for the earliest response.
> >
> > The direct connection between the VSPD and the DU isn't supported in the
> > mainline kernel I'm afraid. I've implemented it in out-of-tree patches,
> > but they would require extensions to the DRM API that I'm not happy with
> > in their current form (so I don't expect the DRM developers to be happy
> > either).
> > 
> > I've rebased the patches on a recent kernel, you can find them at
> > 
> > git://linuxtv.org/pinchartl/fbdev.git vsp1/devel
> > 
> > Please note that I haven't had time to test the rebased version yet.
> > 
> > You can find a patched version of the modetest utility at
> > 
> > git://git.ideasonboard.com/renesas/drm.git live
> > 
> > You might need to update the kernel headers, ioctl numbers might have
> > changed when I've rebased the kernel patches. 

-- 
Regards,

Laurent Pinchart