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

[Gary Thomas <gary@mlbassoc.com>]

Venkatesh, Subbu wrote:
> Hi Gary,
> I just got to know Tomi's tree underwent lots of changes after mailing this patch, since Tomi has no target to commit, so I will update my tree and resend the patch, let me know.

Yes, that would be appreciated.  I had a look at the commits in
Tomi's tree since May 14 (latest date which your patch _might_ be OK)
and they are significant.

Looking forward to your updated patch.

Thanks

> ________________________________________
> From: Gary Thomas [gary@mlbassoc.com]
> Sent: Tuesday, June 02, 2009 2:02 PM
> 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
> 
> 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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