Embeded Linux: Qt5.6 wayland display configuration issue.

Zhangs

Hi all,
I am using Ti AM437x SDK which use Qt5.6 with wayland display.
I have serveral questions about the wayland:

I want to rotate the display for 180 degree, how should I do?
I want to run my own App in fullscreen mode, how should I config the wayland?
When I display with Linuxfb, the dialog of my app is frameless, but when display with wayland, the dialog show the title bar on the top of the dialog, how could I remove the title bar?
Thank you very much.