Re: [PATCH v2 3/9] drm/i915: Simplify up g4x watermark sanitation

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On Wed, Jun 22, 2022 at 06:54:46PM +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> We can simplify the g4x watermark sanitation by reusing the
> second half of g4x_compute_pipe_wm() to convert the sanitized
> raw watermarks into the proper form to be used as the
> optimal/intermediate watermarks.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>

> ---
>  drivers/gpu/drm/i915/intel_pm.c | 21 +++++++--------------
>  1 file changed, 7 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 4ea43fa73075..556fcdfb75f1 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -6951,37 +6951,30 @@ void g4x_wm_sanitize(struct drm_i915_private *dev_priv)
>  			to_intel_crtc_state(crtc->base.state);
>  		struct intel_plane_state *plane_state =
>  			to_intel_plane_state(plane->base.state);
> -		struct g4x_wm_state *wm_state = &crtc_state->wm.g4x.optimal;
>  		enum plane_id plane_id = plane->id;
> -		int level;
> +		int level, num_levels = intel_wm_num_levels(dev_priv);
>  
>  		if (plane_state->uapi.visible)
>  			continue;
>  
> -		for (level = 0; level < 3; level++) {
> +		for (level = 0; level < num_levels; level++) {
>  			struct g4x_pipe_wm *raw =
>  				&crtc_state->wm.g4x.raw[level];
>  
>  			raw->plane[plane_id] = 0;
> -			wm_state->wm.plane[plane_id] = 0;
> -		}
>  
> -		if (plane_id == PLANE_PRIMARY) {
> -			for (level = 0; level < 3; level++) {
> -				struct g4x_pipe_wm *raw =
> -					&crtc_state->wm.g4x.raw[level];
> +			if (plane_id == PLANE_PRIMARY)
>  				raw->fbc = 0;
> -			}
> -
> -			wm_state->sr.fbc = 0;
> -			wm_state->hpll.fbc = 0;
> -			wm_state->fbc_en = false;
>  		}
>  	}
>  
>  	for_each_intel_crtc(&dev_priv->drm, crtc) {
>  		struct intel_crtc_state *crtc_state =
>  			to_intel_crtc_state(crtc->base.state);
> +		int ret;
> +
> +		ret = _g4x_compute_pipe_wm(crtc_state);
> +		drm_WARN_ON(&dev_priv->drm, ret);
>  
>  		crtc_state->wm.g4x.intermediate =
>  			crtc_state->wm.g4x.optimal;
> -- 
> 2.35.1
> 



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