[Intel-gfx] [PATCH v3 2/2] drm/i915/mtl: Limit scaler input to 4k in plane scaling

[Luca Coelho <luciano.coelho@intel.com>]

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From: Animesh Manna <animesh.manna@intel.com>

As part of die area reduction max input source modified to 4096
for MTL so modified range check logic of scaler.

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.

drivers/gpu/drm/i915/display/skl_scaler.c | 31 +++++++++++++++++------
 1 file changed, 23 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..6baa07142b03 100644
--- a/drivers/gpu/drm/i915/display/skl_scaler.c
+++ b/drivers/gpu/drm/i915/display/skl_scaler.c
@@ -103,6 +103,8 @@ 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 +159,28 @@ 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 && 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 = 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;
+	}
+
 	/* 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) {
 		drm_dbg_kms(&dev_priv->drm,
 			    "scaler_user index %u.%u: src %ux%u dst %ux%u "
 			    "size is out of scaler range\n",
-- 
2.38.1