[Intel-gfx] [PATCH] [drm/i915] Handle swap buffers in work proc instead of softirq

[Keith Packard]

On Sat, 2008-10-18 at 15:05 -0700, Jesse Barnes wrote:

> No it's previous chips that have the LVDS on pipe B, FBC only on plane A 
> limitation.  But the flipping only ever worked with drm.git master bits, 
> which never went upstream.  So if you want to redefine the APIs that's still 
> possible.

Ok, that's what Eric said.

> It doesn't matter which way we go as long as we're consistent.  There are only 
> two places where you need to know the mapping:  FBC setup (and therefore 2D 
> mode programming) and vblank interrupt time.  The rest of the code in Mesa 
> and elsewhere can just deal with either planes or pipes all the time.

Given that using pipes eliminates piles of ugly plane<->pipe conversions
in vblank, and that the mode setting code doesn't really care all that
much, I'd say using pipes is a better plan.

I've got a patch sitting here that does this; the result is a net
reduction of code.

-- 
keith.packard at intel.com
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