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?
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 :-(
Signature · 4 lines
------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------
Op 19 apr 2010, om 14:29 heeft Gary Thomas het volgende geschreven:
Quoted 6 lines
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
Quoted 11 lines · Koen Kooi
Op 19 apr 2010, om 14:29 heeft Gary Thomas het volgende geschreven:
Quoted 6 lines
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!
Signature · 4 lines
------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------
Quoted 8 lines
-----Original Message-----
From: Gary Thomas [mailto:[email protected]]
Sent: Monday, April 19, 2010 6:00 PM
To: [email protected]
Cc: Tomi Valkeinen; Hiremath, Vaibhav
Subject: DSS2 & V4L2
Quoted 7 lines
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
Quoted 9 lines
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
------------------------------------------------------------