On Mon, Oct 29, 2018 at 04:00:43PM -0700, Rodrigo Vivi wrote:
> First of all I believe this WA as written here was wrong.
>
> Because it is listed on BSpec only for SKL and BXT, exactly
> the only 2 platforms skipped here.
>
> But also it is written there that we don't need this WA
> anymore:
> "This workaround is no longer needed since NV12 support is
> dropped for the affected projects in #0870."
Ahd here is the missing skl_wa_528() :)
The w/a still seems to say it would be need with ccs. But
the w/a is only listed for pre-production steppins so I guess
it can go (I didn't find any counter argument in the spec).
Reviewed-by: Ville Syrjälä
>
> SO, let's kill it.
>
> Cc: Maarten Lankhorst
> Cc: Vidya Srinivas
> Signed-off-by: Rodrigo Vivi
> ---
> drivers/gpu/drm/i915/intel_display.c | 14 --
> 1 file changed, 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index 14f6f66b00d2..aacc340d4eec 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -455,18 +455,6 @@ static const struct intel_limit intel_limits_bxt = {
> .p2 = { .p2_slow = 1, .p2_fast = 20 },
> };
>
> -static void
> -skl_wa_528(struct drm_i915_private *dev_priv, int pipe, bool enable)
> -{
> - if (IS_SKYLAKE(dev_priv) || IS_BROXTON(dev_priv))
> - return;
> -
> - if (enable)
> - I915_WRITE(CHICKEN_PIPESL_1(pipe), HSW_FBCQ_DIS);
> - else
> - I915_WRITE(CHICKEN_PIPESL_1(pipe), 0);
> -}
> -
> static void
> skl_wa_clkgate(struct drm_i915_private *dev_priv, int pipe, bool enable)
> {
> @@ -5286,7 +5274,6 @@ static void intel_post_plane_update(struct
> intel_crtc_state *old_crtc_state)
> if (needs_nv12_wa(dev_priv, old_crtc_state) &&
> !needs_nv12_wa(dev_priv, pipe_config)) {
> skl_wa_clkgate(dev_priv, crtc->pipe, false);
> - skl_wa_528(dev_priv, crtc->pipe, false);
> }
> }
>
> @@ -5326,7 +5313,6 @@ static void intel_pre_plane_update(struct
> intel_crtc_state *old_crtc_state,
> if (!needs_nv12_wa(dev_priv, old_crtc_state) &&
> needs_nv12_wa(dev_priv, pipe_config)) {
> skl_wa_clkgate(dev_priv, crtc->pipe, true);
> - skl_wa_528(dev_priv, crtc->pipe, true);
> }
>
> /*
> --
> 2.19.1
>
> ___
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> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel
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