drm/i915: add PLL enable/disable functions
authorJesse Barnes <jbarnes@virtuousgeek.org>
Tue, 4 Jan 2011 23:09:33 +0000 (15:09 -0800)
committerChris Wilson <chris@chris-wilson.co.uk>
Wed, 19 Jan 2011 12:36:26 +0000 (12:36 +0000)
For pre-ILK only.  Saves some code in the CRTC enable/disable functions
and allows us to check for pipe and panel status at enable/disable time.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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