[meta-intel] Xrandr support on CrownBay with EMGD

[Chad Bishop]

Thank You Nitin,

Your help is very much appreciated.

Best Regards,
Chad

From: Kamble, Nitin A [mailto:nitin.a.kamble at intel.com]
Sent: Thursday, January 02, 2014 1:09 PM
To: Chad Bishop; meta-intel at yoctoproject.org
Subject: RE: Xrandr support on CrownBay with EMGD

Hi Chad,
  I see, it is an issue with the runtime rotation. I am checking with the EMGD team inside Intel, to get an answer for this question.
Nitin


From: Chad Bishop [mailto:Chad.Bishop at ravenind.com]
Sent: Thursday, January 02, 2014 10:43 AM
To: Kamble, Nitin A; meta-intel at yoctoproject.org<mailto:meta-intel at yoctoproject.org>
Subject: RE: Xrandr support on CrownBay with EMGD

Hello Nitin,

http://www.intel.com/content/www/us/en/intelligent-systems/intel-embedded-media-and-graphics-driver/emgd-v1-18-user-guide.html

Defined on Page 151 of 215 ... examples provided throughout the rest of the documentation, just search for rotation.

Option "All/<ConfigID>/Port/<port number>/General/Rotation" "integer" : Rotate the display. Valid values are 0, 90, 180, 270.

We have validated that we can indeed rotate the display by changing the xorg.conf and restarting X.  However, this kills our application.

We are attempting to rotate the display without restarting X / hence killing our application.

Is runtime rotation out of the question?  Is there another method other than xrandr?

Thank You,
Chad

From: Kamble, Nitin A [mailto:nitin.a.kamble at intel.com]
Sent: Thursday, January 02, 2014 12:34 PM
To: Chad Bishop; meta-intel at yoctoproject.org<mailto:meta-intel at yoctoproject.org>
Subject: RE: Xrandr support on CrownBay with EMGD

Hi Chad,
  I tried xrandr on crownbay, and xrandr is reporting that rotation is not allowed for the screen. There may be xorg.conf option for screen rotation. I will try finding it out.

Nitin


From: Chad Bishop [mailto:Chad.Bishop at ravenind.com]
Sent: Thursday, January 02, 2014 6:27 AM
To: Kamble, Nitin A; meta-intel at yoctoproject.org<mailto:meta-intel at yoctoproject.org>
Subject: RE: Xrandr support on CrownBay with EMGD

Hello Nitin,

Per your request (or at least as I understood it) I am reposting this issue to the meta-intel mailing list now that it is after the holidays.

Thank You,
Chad Bishop
Senior Software Engineer
Applied Technology Division
Raven Industries



From: Kamble, Nitin A [mailto:nitin.a.kamble at intel.com]
Sent: Wednesday, December 25, 2013 7:27 PM
To: Chad Bishop; meta-intel at yoctoproject.org<mailto:meta-intel at yoctoproject.org>
Subject: RE: Xrandr support on CrownBay with EMGD

Hi Chard,
  I am on vacation now. I will try verifying the xorg rotation on crownbay. Can you bring this issue after the holidays?

Happy Holidays,
Nitin




From: meta-intel-bounces at yoctoproject.org<mailto:meta-intel-bounces at yoctoproject.org> [mailto:meta-intel-bounces at yoctoproject.org] On Behalf Of Chad Bishop
Sent: Monday, December 23, 2013 10:18 AM
To: meta-intel at yoctoproject.org<mailto:meta-intel at yoctoproject.org>
Subject: [meta-intel] Xrandr support on CrownBay with EMGD

Hello meta-intel team,

We have a usecase for screen rotation at runtime.   We are building for crownbay using Dylan 1.4.2.

We have attempted to use libxrandr and then the xrandr command line utility directly in order to get the screen to rotate 90 degrees at runtime.

We are able to configure the xorg.conf to rotate the screen 90 degrees at boot but haven't had any luck at runtime.  The xorg.conf was generated by CED and unmodified.  We only added the rotation parameter to test a difference in behavior at boot / restarting X.

The EMGD user guide states :

2.2.5Rotation

Rotation is the ability to rotate the display for the Intel® Embedded Media and Graphics Driver. Rotation support includes 0°, 90°, 180°, 270°. Rotation is supported only on the following chipsets using Windows* XP, and Linux* operating systems:

*Intel® Atom(tm) Processor E6xx

*Intel® System Controller Hub US15W/US15WP/WPT chipset
Note:Rotation is not supported with the VBIOS. Rotation

In general, should we expect rotation to work via xrandr?

Or should we be using another interface?

Should we be modifying our xorg.conf outside of CED to support this capability?

I plead ignorance.

Thank you for your help in this matter,
Chad Bishop

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