On Wed, Jun 22, 2022 at 06:54:47PM +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <[email protected]>
> 
> We can simplify the vlv watermark sanitation by reusing the
> second half of vlv_compute_pipe_wm() to convert the sanitized
> raw watermarks into the proper form to be used as the
> optimal/intermediate watermarks.
> 
> Also to be consistent with normal watermark computation the sanitized
> watermarks should be all 0 for any disabled plane. Previously we
> zeroed out the watermarks only up to the level (ie. PM2/5/DVDFS)
> that was enabled.
> 
> Signed-off-by: Ville Syrjälä <[email protected]>

Reviewed-by: Stanislav Lisovskiy <[email protected]>

> ---
>  drivers/gpu/drm/i915/intel_pm.c | 15 ++++++---------
>  1 file changed, 6 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 556fcdfb75f1..45ec00e2e3c4 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -7100,30 +7100,27 @@ void vlv_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 vlv_wm_state *wm_state = &crtc_state->wm.vlv.optimal;
> -             const struct vlv_fifo_state *fifo_state =
> -                     &crtc_state->wm.vlv.fifo_state;
>               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 < wm_state->num_levels; level++) {
> +             for (level = 0; level < num_levels; level++) {
>                       struct g4x_pipe_wm *raw =
>                               &crtc_state->wm.vlv.raw[level];
>  
>                       raw->plane[plane_id] = 0;
> -
> -                     wm_state->wm[level].plane[plane_id] =
> -                             vlv_invert_wm_value(raw->plane[plane_id],
> -                                                 
> fifo_state->plane[plane_id]);
>               }
>       }
>  
>       for_each_intel_crtc(&dev_priv->drm, crtc) {
>               struct intel_crtc_state *crtc_state =
>                       to_intel_crtc_state(crtc->base.state);
> +             int ret;
> +
> +             ret = _vlv_compute_pipe_wm(crtc_state);
> +             drm_WARN_ON(&dev_priv->drm, ret);
>  
>               crtc_state->wm.vlv.intermediate =
>                       crtc_state->wm.vlv.optimal;
> -- 
> 2.35.1
> 

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