drm/i915/gen9: Add HDC_CHICKEN1 to HW whitelist
authorArun Siluvery <arun.siluvery@linux.intel.com>
Thu, 21 Jan 2016 21:43:49 +0000 (21:43 +0000)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Mon, 25 Jan 2016 15:48:22 +0000 (16:48 +0100)
commit3669ab6191b24ee800a5f78d3748b7d96df12115
treef57bf44d6d37e2b66e88559cc7c793011db29b03
parente0f3fa096d6f319d1177b05d824fd8b36517368c
drm/i915/gen9: Add HDC_CHICKEN1 to HW whitelist

Required for WaAllowUMDToModifyHDCChicken1:skl,bxt

This register is added to HW whitelist to support WA required for future
enabling of pre-emptive command execution, WA implementation will be in
userspace and it cannot program this register if it is not on HW whitelist.

v2: explain purpose of changes (Chris)

Reviewed-by: Nick Hoath <nicholas.hoath@intel.com>
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1453412634-29238-4-git-send-email-arun.siluvery@linux.intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_ringbuffer.c