drm/i915: split enable/disable vblank code into chipset specific functions
authorJesse Barnes <jbarnes@virtuousgeek.org>
Thu, 7 Apr 2011 20:58:17 +0000 (13:58 -0700)
committerKeith Packard <keithp@keithp.com>
Sat, 14 May 2011 00:03:10 +0000 (17:03 -0700)
This makes the Ironlake+ code trivial and generally simplifies things.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>

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