On Wed, 22 Sep 2010, Michael wrote:
yesterday I committed a bunch of changes to the ffb driver to
implement
hardware acceleration for character drawing etc. so we don't have
to access
the framebuffer anymore. While there I noticed that the driver does
an awful
lot of syncing which on my ffb2+ is unnecessary. According to the
documentation font drawing operations could interfere with blitter
operations
but I found no evidence of that. Also, the documentation says
nothing about
writes to the font data register being pipelined or not - so far my
450MHz
US-IIs failed to make it overflow.
That said, if you have an old pre-ffb2 Creator or Creator3D please
check if
there are any weird side effects. If you see any they should go
away when you
put
options FFB_SYNC
into your kernel config.
Does this affect X, wscons, or both?