drm/i915: skip forcewake actions on forcewake-less uncore

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We always call some of the setup/cleanup functions for forcewake, even
if the feature is not actually available. Skipping these operations if
forcewake is not available saves us some operations on older gens and
prepares us for having a forcewake-less display uncore.

v2: do not make suspend/resume functions forcewake-specific (Chris,
Tvrtko), use GEM_BUG_ON in internal forcewake-only functions (Tvrtko)

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190620010021.20637-5-daniele.ceraolospurio@intel.com

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Daniele Ceraolo Spurio 2019-06-19 18:00:19 -07:00 • committed by Tvrtko Ursulin

parent 013857580b

commit 2e81bc61d4

1 changed files with 87 additions and 56 deletions

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drivers/gpu/drm/i915/intel_uncore.c

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