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drm/i915: implement a media hang w/a
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 11 Apr 2012 18:42:38 +0000 (20:42 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Tue, 17 Apr 2012 09:19:52 +0000 (11:19 +0200)
commitde4a8bd16205283e9cb746e8fbfa7f9735c039b5
tree4c9f0ba6aec0d92a81f5032c1d49917de5081e87tree
parent767878908e7cc28c440c5431f6591157d8bd4ae7commit | diff
drm/i915: implement a media hang w/a

Contrary to the other clock gating w/a in GEN6_UCGCTL1, this one is
actually documented in Bspec, vol1g "GT Interface Registers [SNB]",
Section 1.5.1 "UCGCTL1 - Unit Level Clock Gating Control 1".

Supposedly this can prevent hangs on the media ring.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/i915_reg.h diff | blob | blame | history
drivers/gpu/drm/i915/intel_display.c diff | blob | blame | history
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