Re: DSS2: How to test TV and LCD output simulatenously

[Gary Thomas <gary@mlbassoc.com>]

Gary Thomas wrote:
> Venkatesh, Subbu wrote:
>> Hello Gary,
>> I have already emailed the patch, here is the link..
>>  http://patchwork.kernel.org/patch/24196/
> 
> Thanks, I'll give it a try.

I applied this patch to Tomi's tree (cloned today), but no joy:
  http://www.bat.org/~tomba/git/linux-omap-dss.git commit 72f7d3309a25dd9f39c292aa15e41a719a734867

  CC      arch/arm/mach-omap2/board-ldp.o
/local/linux-omap-dss/arch/arm/mach-omap2/board-ldp.c:317: warning: 'struct omap_display' declared inside parameter list
/local/linux-omap-dss/arch/arm/mach-omap2/board-ldp.c:317: warning: its scope is only this definition or declaration, which is probably not what you want
/local/linux-omap-dss/arch/arm/mach-omap2/board-ldp.c:332: warning: 'struct omap_display' declared inside parameter list
/local/linux-omap-dss/arch/arm/mach-omap2/board-ldp.c:342: error: variable 'omap_ldp_display_data_tv' has initializer but incomplete type

How do I get a working tree with this patch applied?

> 
>> ________________________________________
>> From: Gary Thomas [gary@mlbassoc.com]
>> Sent: Tuesday, June 02, 2009 10:38 AM
>> To: Venkatesh, Subbu
>> Cc: linux-omap@vger.kernel.org; Shah, Hardik; tomi.valkeinen@nokia.com
>> Subject: Re: DSS2: How to test TV and LCD output simulatenously
>>
>> Venkatesh, Subbu wrote:
>>> Hi Gary,
>>> LDP is a development board, I have to work on LDP panel driver  and BSP code to support new DSS2, It is ported on linux-omap tree.
>>> I am still working on testing the features. For camera I might move into V4l2, but I cannot confirm this, I am still working on testing the Framebuffer features.
>> How much of this can you share?  I'd like to try this on my LDP (Zoom1)
>> and then get it ported to my own hardware (very similar to Zoom1)
>>
>> Thanks
>>
>>> ________________________________________
>>> From: Gary Thomas [gary@mlbassoc.com]
>>> Sent: Tuesday, June 02, 2009 6:52 AM
>>> To: Venkatesh, Subbu
>>> Cc: linux-omap@vger.kernel.org; Shah, Hardik; tomi.valkeinen@nokia.com
>>> Subject: Re: DSS2: How to test TV and LCD output simulatenously
>>>
>>> Venkatesh, Subbu wrote:
>>>> Hi,
>>>> I have DSS2 ported on LDP board, I could manage to get output display on TV and LCD interface individually, also tested some of the features like Rotation and Mirroring, they worked with out any problem.
>>> What does "DSS2 ported on LDP board" mean?  What source tree/branch did you use?
>>>
>>>> Now I am trying to get output both on TV and LCD simultaneously,
>>>>
>>>> I was not successful with my approach that I tried, like
>>>>
>>>> 1. Boot the kernel with the default LCD display
>>>> 2. Then I enabled ntsc timings for TV, as PAL do not work on it.
>>>>     #echo ntsc > /sys/devices/platform/omapdss/display1/timings
>>>> 3. Enabled TV
>>>>   # echo 1 > /sys/devices/platform/omapdss/display1/enable
>>>> and did the common fb test....
>>>> But it did not seem to work.
>>>> Its nice if someone has different working approach or can suggest me where I am going wrong in the above steps.
>>> Is this stuff documented somewhere?  Like the difference
>>> between DSS1 and DSS2?  How the various layers and overlays
>>> are supposed to work?  What about the camera interface?
> 


-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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