[Intel-gfx] [PATCH] drm/i915: create macros to handle masked bits

[Chris Wilson]

On Tue, 24 Apr 2012 14:04:12 +0200, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> ... and put them to so good use.
> 
> Note that there's functional change in vlv clock gating code, we now
> no longer spuriously read back the current value of the bit. According
> to Bspec the high bits should always read zeror, so ORing this in
s/zeror/zero/
> should have no effect.
> 
> Cc: Jesse Barnes <jbarnes at virtuousgeek.org>
> Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

The transforms here look fine, just a moment of concern for not
repeating the MODE twiddling in init_render_ring after reset.

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre