Re: [Intel-gfx] [PATCH v7 2/2] drm/i915/mtl: update scaler source and destination limits for MTL

["Lisovskiy, Stanislav" <stanislav.lisovskiy@intel.com>]

On Fri, Dec 23, 2022 at 03:05:09PM +0200, Luca Coelho wrote:
> From: Animesh Manna <animesh.manna@intel.com>
> 
> The max source and destination limits for scalers in MTL have changed.
> Use the new values accordingly.
> 
> Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
> Signed-off-by: Animesh Manna <animesh.manna@intel.com>
> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
> ---
> 
> In v2:
>    * No changes;
> 
> In v3:
>    * Removed stray reviewed-by tag;
>    * Added my s-o-b.
> 
> In v4:
>    * No changes.
> 
> In v5:
>    * Just resent with a cover letter.
> 
> In v6:
>    * Now the correct version again (same as v4).
> 
> In v7:
>    * Update to new MTL limits according to the bspec.
> 
> 
>  drivers/gpu/drm/i915/display/skl_scaler.c | 40 ++++++++++++++++++-----
>  1 file changed, 32 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
> index d7390067b7d4..01e881293612 100644
> --- a/drivers/gpu/drm/i915/display/skl_scaler.c
> +++ b/drivers/gpu/drm/i915/display/skl_scaler.c
> @@ -87,6 +87,10 @@ static u16 skl_scaler_calc_phase(int sub, int scale, bool chroma_cosited)
>  #define ICL_MAX_SRC_H 4096
>  #define ICL_MAX_DST_W 5120
>  #define ICL_MAX_DST_H 4096
> +#define MTL_MAX_SRC_W 4096
> +#define MTL_MAX_SRC_H 8192
> +#define MTL_MAX_DST_W 8192
> +#define MTL_MAX_DST_H 8192
>  #define SKL_MIN_YUV_420_SRC_W 16
>  #define SKL_MIN_YUV_420_SRC_H 16
>  
> @@ -103,6 +107,8 @@ skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
>  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
>  	const struct drm_display_mode *adjusted_mode =
>  		&crtc_state->hw.adjusted_mode;
> +	int min_src_w, min_src_h, min_dst_w, min_dst_h;
> +	int max_src_w, max_src_h, max_dst_w, max_dst_h;
>  
>  	/*
>  	 * Src coordinates are already rotated by 270 degrees for
> @@ -157,15 +163,33 @@ skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
>  		return -EINVAL;
>  	}
>  
> +	min_src_w = SKL_MIN_SRC_W;
> +	min_src_h = SKL_MIN_SRC_H;
> +	min_dst_w = SKL_MIN_DST_W;
> +	min_dst_h = SKL_MIN_DST_H;
> +
> +	if (DISPLAY_VER(dev_priv) < 11) {
> +		max_src_w = SKL_MAX_SRC_W;
> +		max_src_h = SKL_MAX_SRC_H;
> +		max_dst_w = SKL_MAX_DST_W;
> +		max_dst_h = SKL_MAX_DST_H;
> +	} else if (DISPLAY_VER(dev_priv) < 14) {
> +		max_src_w = ICL_MAX_SRC_W;
> +		max_src_h = ICL_MAX_SRC_H;
> +		max_dst_w = ICL_MAX_DST_W;
> +		max_dst_h = ICL_MAX_DST_H;
> +	} else {
> +		max_src_w = MTL_MAX_SRC_W;
> +		max_src_h = MTL_MAX_SRC_H;
> +		max_dst_w = MTL_MAX_DST_W;
> +		max_dst_h = MTL_MAX_DST_H;
> +	}
> +
>  	/* range checks */
> -	if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
> -	    dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
> -	    (DISPLAY_VER(dev_priv) >= 11 &&
> -	     (src_w > ICL_MAX_SRC_W || src_h > ICL_MAX_SRC_H ||
> -	      dst_w > ICL_MAX_DST_W || dst_h > ICL_MAX_DST_H)) ||
> -	    (DISPLAY_VER(dev_priv) < 11 &&
> -	     (src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
> -	      dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H)))	{
> +	if (src_w < min_src_w || src_h < min_src_h ||
> +	    dst_w < min_dst_w || dst_h < min_dst_h ||
> +	    src_w > max_src_w || src_h > max_src_h ||
> +	    dst_w > max_dst_w || dst_h > max_dst_h) {

Yep, that looks definitely way cleaner than initial condition.

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

>  		drm_dbg_kms(&dev_priv->drm,
>  			    "scaler_user index %u.%u: src %ux%u dst %ux%u "
>  			    "size is out of scaler range\n",
> -- 
> 2.39.0
>