[Intel-gfx] [PATCH 01/13] drm/i915: Fix up some DRRS type checks

[Jani Nikula]

On Thu, 10 Mar 2022, Ville Syrjala <ville.syrjala at linux.intel.com> wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Only seamless DRRS needs the frontbuffer tracking, so check for that.
> Also use != consistently instead of randomly picing < as the comparison

*picking

> operator.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Reviewed-by: Jani Nikula <jani.nikula at intel.com>

PS. Why do we have STATIC_DRRS_SUPPORT if we don't use it for anything?
We could just filter this during VBT parsing.

> ---
>  drivers/gpu/drm/i915/display/intel_drrs.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c b/drivers/gpu/drm/i915/display/intel_drrs.c
> index fa715b8ea310..146f2cf7d01a 100644
> --- a/drivers/gpu/drm/i915/display/intel_drrs.c
> +++ b/drivers/gpu/drm/i915/display/intel_drrs.c
> @@ -152,7 +152,7 @@ static void intel_drrs_set_state(struct drm_i915_private *dev_priv,
>  		return;
>  	}
>  
> -	if (dev_priv->drrs.type < SEAMLESS_DRRS_SUPPORT) {
> +	if (dev_priv->drrs.type != SEAMLESS_DRRS_SUPPORT) {
>  		drm_dbg_kms(&dev_priv->drm, "Only Seamless DRRS supported.\n");
>  		return;
>  	}
> @@ -326,7 +326,7 @@ static void intel_drrs_frontbuffer_update(struct drm_i915_private *dev_priv,
>  	struct drm_crtc *crtc;
>  	enum pipe pipe;
>  
> -	if (dev_priv->drrs.type == DRRS_NOT_SUPPORTED)
> +	if (dev_priv->drrs.type != SEAMLESS_DRRS_SUPPORT)
>  		return;
>  
>  	cancel_delayed_work(&dev_priv->drrs.work);

-- 
Jani Nikula, Intel Open Source Graphics Center