* DSS2 & V4L2
@ 2010-04-19 12:29 Gary Thomas
2010-04-19 12:58 ` Koen Kooi
2010-04-20 6:56 ` Hiremath, Vaibhav
0 siblings, 2 replies; 4+ messages in thread
From: Gary Thomas @ 2010-04-19 12:29 UTC (permalink / raw)
To: linux-omap@vger.kernel.org; +Cc: Tomi Valkeinen, hvaibhav
I'm trying to get the DVSDK (3.01.00.03) working. It uses
2.6.32 + DSS2 + V4L2.
What I'm having trouble with is how to configure/create/setup
a video overlay such that I get V4L2 device for the display.
In particular, what magic is required to create /dev/video1?
Note: I'd be glad to send this question to a more targeted list,
but the only one mentioned in the DVSDK documentation does not
really exist :-(
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: DSS2 & V4L2
2010-04-19 12:29 DSS2 & V4L2 Gary Thomas
@ 2010-04-19 12:58 ` Koen Kooi
2010-04-19 13:18 ` Gary Thomas
2010-04-20 6:56 ` Hiremath, Vaibhav
1 sibling, 1 reply; 4+ messages in thread
From: Koen Kooi @ 2010-04-19 12:58 UTC (permalink / raw)
To: Gary Thomas; +Cc: linux-omap@vger.kernel.org, Tomi Valkeinen, hvaibhav
Op 19 apr 2010, om 14:29 heeft Gary Thomas het volgende geschreven:
> I'm trying to get the DVSDK (3.01.00.03) working. It uses
> 2.6.32 + DSS2 + V4L2.
>
> What I'm having trouble with is how to configure/create/setup
> a video overlay such that I get V4L2 device for the display.
> In particular, what magic is required to create /dev/video1?
The trick is usually "do not create >2 framebuffers". My understanding is that an overlay can either be a framebuffer or a v4l device, but not both.
regards,
Koen
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: DSS2 & V4L2
2010-04-19 12:58 ` Koen Kooi
@ 2010-04-19 13:18 ` Gary Thomas
0 siblings, 0 replies; 4+ messages in thread
From: Gary Thomas @ 2010-04-19 13:18 UTC (permalink / raw)
To: Koen Kooi; +Cc: linux-omap@vger.kernel.org, Tomi Valkeinen, hvaibhav
On 04/19/2010 06:58 AM, Koen Kooi wrote:
>
> Op 19 apr 2010, om 14:29 heeft Gary Thomas het volgende geschreven:
>
>> I'm trying to get the DVSDK (3.01.00.03) working. It uses
>> 2.6.32 + DSS2 + V4L2.
>>
>> What I'm having trouble with is how to configure/create/setup
>> a video overlay such that I get V4L2 device for the display.
>> In particular, what magic is required to create /dev/video1?
>
> The trick is usually "do not create>2 framebuffers". My understanding is that an overlay can either be a framebuffer or a v4l device, but not both.
That was it, thanks!
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: DSS2 & V4L2
2010-04-19 12:29 DSS2 & V4L2 Gary Thomas
2010-04-19 12:58 ` Koen Kooi
@ 2010-04-20 6:56 ` Hiremath, Vaibhav
1 sibling, 0 replies; 4+ messages in thread
From: Hiremath, Vaibhav @ 2010-04-20 6:56 UTC (permalink / raw)
To: Gary Thomas, linux-omap@vger.kernel.org; +Cc: Tomi Valkeinen
> -----Original Message-----
> From: Gary Thomas [mailto:gary@mlbassoc.com]
> Sent: Monday, April 19, 2010 6:00 PM
> To: linux-omap@vger.kernel.org
> Cc: Tomi Valkeinen; Hiremath, Vaibhav
> Subject: DSS2 & V4L2
>
> I'm trying to get the DVSDK (3.01.00.03) working. It uses
> 2.6.32 + DSS2 + V4L2.
>
> What I'm having trouble with is how to configure/create/setup
> a video overlay such that I get V4L2 device for the display.
> In particular, what magic is required to create /dev/video1?
>
[Hiremath, Vaibhav] No magic required here, you just need to configure number of Fb's less than 2.
We have created one config option CONFIG_FB_OMAP2_NUM_FBS, which controls number of Fb nodes and rest goes to V4L2, out of total 3 (number of overlays).
Hope this helps you to understand this.
Thanks,
Vaibhav
> Note: I'd be glad to send this question to a more targeted list,
> but the only one mentioned in the DVSDK documentation does not
> really exist :-(
>
> --
> ------------------------------------------------------------
> Gary Thomas | Consulting for the
> MLB Associates | Embedded world
> ------------------------------------------------------------
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-04-20 6:57 UTC | newest]
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2010-04-19 12:29 DSS2 & V4L2 Gary Thomas
2010-04-19 12:58 ` Koen Kooi
2010-04-19 13:18 ` Gary Thomas
2010-04-20 6:56 ` Hiremath, Vaibhav
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