drm/i915/skl: don't set the AsyncFlip performance mode for Gen9+

The following sets the AsyncFlip performance mode for everything above
Gen6:

commit 4790cb36b3eede8fb0cca529dc1d31b9936fa24b
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sun Jan 20 16:11:20 2013 +0000

    drm/i915: Disable AsyncFlip performance optimisations

Starting from Gen9 the MI_MODE register layout changes and doesn't
include the above bit.

Reviewed-by: Thomas Wood <thomas.wood@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 109de2eeb9a812a9045403542560c9d953754418..a6a64aee8f740005d6cf31d0f3e14095bef422fc 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -823,7 +823,7 @@ static int init_render_ring(struct intel_engine_cs *ring)
         *
         * WaDisableAsyncFlipPerfMode:snb,ivb,hsw,vlv,bdw,chv
         */
-       if (INTEL_INFO(dev)->gen >= 6)
+       if (INTEL_INFO(dev)->gen >= 6 && INTEL_INFO(dev)->gen < 9)
                I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(ASYNC_FLIP_PERF_DISABLE));
 
        /* Required for the hardware to program scanline values for waiting */