[Intel-gfx] [PATCH 5/5] drm/i915: Clean up the irq enable/disable for ilk rps

[Chris Wilson]

Quoting Ville Syrjala (2020-10-21 14:14:43)
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Let's unmask the PCU event irq _after_ we've set up the
> hardware and software to deal with the fallout. We can
> also drop the PCU event bit from DEIER except when we
> need it for rps.
> 
> And on the disable side we replace the hand rolled (and
> unlocked) DEIER/IIR/IMR frobbing with ilk_disable_display_irq().
> Ocd does require me to reorder it to be symmetric with
> the enable path however.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris