drm/i915: Add quirk to disable SSC on Lenovo U160 LVDS
authorKeith Packard <keithp@keithp.com>
Tue, 12 Jul 2011 21:56:22 +0000 (14:56 -0700)
committerKeith Packard <keithp@keithp.com>
Thu, 14 Jul 2011 06:53:41 +0000 (23:53 -0700)
commit435793dfb8aec7b2e19f72d5bce8a22fd0b57839
treefde7fd2e71f04c4b871140ba629b4d6f78639738
parentd1ca1a004822983e2fc702d5382b4b9a5527cfbe
drm/i915: Add quirk to disable SSC on Lenovo U160 LVDS

We've tried several times to make this machine 'just work', but every
patch that does causes many other machines to fail. This adds a quirk
which special cases this hardware and forces ssc to be
disabled. There's no way to override this from the command line; that
would be a significantly more invasive change.

This patch fixes #36656 on fdo bugzilla:
https://bugs.freedesktop.org/show_bug.cgi?id=36656

Signed-off-by: Keith Packard <keithp@keithp.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=36656
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/intel_display.c