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drm/i915: Disable FBC on Ironlake to save 1W 

Frame buffer compression is broken on Ironlake due to buggy hardware.
Currently it is disabled through chicken bits, but it still consumes
over 1W more than if we simply never attempt to enable the FBC code
paths.

Signed-off-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
This commit is contained in:
Alex Shi 2010-11-19 09:33:55 +00:00 committed by Chris Wilson
parent e7dbb2f2f8
commit 16c59ef33b
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/i915_drv.c
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@ -150,7 +150,8 @@ static const struct intel_device_info intel_ironlake_d_info = {
static const struct intel_device_info intel_ironlake_m_info = {
.gen = 5, .is_mobile = 1,
.need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1, .has_hotplug = 1,
.need_gfx_hws = 1, .has_rc6 = 1, .has_hotplug = 1,
.has_fbc = 0, /* disabled due to buggy hardware */
.has_bsd_ring = 1,
};