[PATCH 01/11] vga_switcheroo: Add support for switching only the DDC

[Dave Airlie]

On 2 June 2014 02:38, Matthew Garrett <matthew.garrett at nebula.com> wrote:
> From: Seth Forshee <seth.forshee at canonical.com>
>
> During graphics driver initialization its useful to be able to mux only
> the DDC to the inactive client in order to read the EDID. Add a
> switch_ddc callback to allow capable handlers to provide this
> functionality, and add vga_switcheroo_switch_ddc() to allow DRM to mux
> only the DDC.
>

I can't figure out why I didn't like this, but I rewrote this way back
to lock/unlock the ddc lines,
bits are contained in this WIP mess.
http://cgit.freedesktop.org/~airlied/linux/commit/?h=switchy-wip&id=aead3bb72d82bd63149082a2670cc2521f2290a4

I think I'd prefer something like that otherwise the interface got really ugly.

Dave.