• Chris Wilson's avatar
    drm/i915: Improved w/a for rps on Baytrail · 43cf3bf0
    Chris Wilson authored
    Rewrite commit 31685c25
    Author: Deepak S <deepak.s@linux.intel.com>
    Date:   Thu Jul 3 17:33:01 2014 -0400
    
        drm/i915/vlv: WA for Turbo and RC6 to work together.
    
    Other than code clarity, the major improvement is to disable the extra
    interrupts generated when idle.  However, the reclocking remains rather
    slow under the new manual regime, in particular it fails to downclock as
    quickly as desired. The second major improvement is that for certain
    workloads, like games, we need to combine render+media activity counters
    as the work of displaying the frame is split across the engines and both
    need to be taken into account when deciding the global GPU frequency as
    memory cycles are shared.
    Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
    Cc: Deepak S <deepak.s@linux.intel.com>
    Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
    Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
    Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
    Reviewed-by: Deepak S<deepak.s@linux.intel.com>
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    43cf3bf0
intel_display.c 393 KB