Re: [PATCH 5/5] drm/i915: Simplify modifier lookup in watermark code

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On 30.9.2022 14.31, Ville Syrjälä wrote:
On Fri, Sep 30, 2022 at 02:22:08PM +0300, Juha-Pekka Heikkila wrote:
I had earlier this patch which look like it does mostly the same
https://patchwork.freedesktop.org/patch/444010/?series=92491&rev=4

With exception to mc ccs, earlier Imre said mc ccs must not be
considered here.

For the rc_surface thing? Doesn't actually matter what we put there
on glk+ since it's only used in skl/bxt code.


ack. Then this set is

Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@xxxxxxxxx>


/Juha-Pekka

On 30.9.2022 13.43, Ville Syrjala wrote:
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Replace the huge modifier lists in the watermark code with
a few calls to intel_fb.c.

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
   drivers/gpu/drm/i915/display/intel_fb.c      | 13 ++++++++++++
   drivers/gpu/drm/i915/display/intel_fb.h      |  1 +
   drivers/gpu/drm/i915/display/skl_watermark.c | 22 +++-----------------
   3 files changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index eefa33c555ac..63137ae5ab21 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -300,6 +300,19 @@ static bool plane_caps_contain_all(u8 caps, u8 mask)
   	return (caps & mask) == mask;
   }
+/**
+ * intel_fb_is_tiled_modifier: Check if a modifier is a tiled modifier type
+ * @modifier: Modifier to check
+ *
+ * Returns:
+ * Returns %true if @modifier is a tiled modifier.
+ */
+bool intel_fb_is_tiled_modifier(u64 modifier)
+{
+	return plane_caps_contain_any(lookup_modifier(modifier)->plane_caps,
+				      INTEL_PLANE_CAP_TILING_MASK);
+}
+
   /**
    * intel_fb_is_ccs_modifier: Check if a modifier is a CCS modifier type
    * @modifier: Modifier to check
diff --git a/drivers/gpu/drm/i915/display/intel_fb.h b/drivers/gpu/drm/i915/display/intel_fb.h
index 12386f13a4e0..4662b812b934 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.h
+++ b/drivers/gpu/drm/i915/display/intel_fb.h
@@ -29,6 +29,7 @@ struct intel_plane_state;
   #define INTEL_PLANE_CAP_TILING_Yf	BIT(5)
   #define INTEL_PLANE_CAP_TILING_4	BIT(6)
+bool intel_fb_is_tiled_modifier(u64 modifier);
   bool intel_fb_is_ccs_modifier(u64 modifier);
   bool intel_fb_is_rc_ccs_cc_modifier(u64 modifier);
   bool intel_fb_is_mc_ccs_modifier(u64 modifier);
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index 18178b01375e..0715bb308989 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -1706,26 +1706,10 @@ skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
   		return -EINVAL;
   	}
- wp->y_tiled = modifier == I915_FORMAT_MOD_Y_TILED ||
-		      modifier == I915_FORMAT_MOD_4_TILED ||
-		      modifier == I915_FORMAT_MOD_Yf_TILED ||
-		      modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-		      modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
-		      modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
-		      modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
-		      modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
-		      modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS ||
-		      modifier == I915_FORMAT_MOD_4_TILED_DG2_MC_CCS ||
-		      modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC;
   	wp->x_tiled = modifier == I915_FORMAT_MOD_X_TILED;
-	wp->rc_surface = modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
-			 modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
-			 modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
-			 modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS ||
-			 modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC ||
-			 modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS ||
-			 modifier == I915_FORMAT_MOD_4_TILED_DG2_MC_CCS ||
-			 modifier == I915_FORMAT_MOD_4_TILED_DG2_RC_CCS_CC;
+	wp->y_tiled = modifier != I915_FORMAT_MOD_X_TILED &&
+		intel_fb_is_tiled_modifier(modifier);
+	wp->rc_surface = intel_fb_is_ccs_modifier(modifier);

I had earlier this patch which look like it did mostly the same
https://patchwork.freedesktop.org/patch/444010/?series=92491&rev=4

With exception to mc ccs, earlier Imre said mc ccs must not be
considered here.

/Juha-Pekka

   	wp->is_planar = intel_format_info_is_yuv_semiplanar(format, modifier);
wp->width = width;





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