IMX53 rotate

[woutervh]

I have some 1920x1080 screens attached by LVDS to a IMX53 platform. These needs to be rotated by 90 or 180°.

I'd prefere to do this in kernel space because I don't want the user to bother about the screen orientation.

Where do I start?

[VladanJovanovic · Accepted solution]

In Linux BSP documentation package there's a document named "imx5x_IPU_LIB_UG.pdf". It describes IPU API and how you can use IPU to perform these functions accelerated by HW.

Usually your application will need to generate frame to a buffer of XxY size, and then you'd use IPU to rotate it to YxX framebuffer. So a small plugin is usually required to integrate to an existing app.

[woutervh]

Yes, but I want it in kernel, so that the user/app/whatever doesn't need to use the IPU api...

[Noel_V]

Hi wouter,

I'm in the need for rotating the FRAME buffer on the IMx53 .

Did you succeed in rotating ( so that bootup shows a correct display)?

Any pacthes requried ?

Regards

Noel

[Philip_FSL]

The user side library sits on top of kernel ioctl calls.  You should be able to replicate the functionality kernel side that calls the IPU kernel driver functions directly.