Hi, Building on the blob-property submission series[0], this provides a MODE_ID property that can be used to set the current mode for a CRTC under atomic modesetting, plus a way for users to create blob properties so they can specify their own modes.
Using this[1] I've been able to validate the atomic userspace API with a ported version of Weston[2]. This is currently undergoing review, but seems pretty OK. Both modesetting for every output together, and per-output async pageflips with events, works as well as the driver does.
Also tested with fbcon and X11, on Broadwell.
Cheers, Daniel
[0]: 1429554176-9865-1-git-send-email-daniels@collabora.com [1]: And a pile of other work in the i915 driver from Maarten/Ander, and my own bits on top; see git://git.collabora.co.uk/git/user/daniels/linux in the wip/4.1.x/blob-modes-i915 branch. [2]: http://lists.freedesktop.org/archives/wayland-devel/2015-May/022106.html