[PATCH v2 11/11] drm/i915: Add functions to check for RC CCS CC and MC CCS modifiers

[Imre Deak <imre.deak@xxxxxxxxx>]

Instead of open-coding the checks add functions for this, simplifying
the handling of CCS modifiers on future platforms.

Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_fb.c       | 24 +++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_fb.h       |  2 ++
 .../drm/i915/display/skl_universal_plane.c    |  4 ++--
 3 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index cf84b1ce6a485..da8cc5e47aa1b 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -274,6 +274,30 @@ bool intel_fb_is_ccs_modifier(u64 modifier)
 	return is_ccs_type_modifier(lookup_modifier(modifier), INTEL_CCS_ANY);
 }
 
+/**
+ * intel_fb_is_rc_ccs_cc_modifier: Check if a modifier is an RC CCS CC modifier type
+ * @modifier: Modifier to check
+ *
+ * Returns:
+ * Returns %true if @modifier is a render with color clear modifier.
+ */
+bool intel_fb_is_rc_ccs_cc_modifier(u64 modifier)
+{
+	return is_ccs_type_modifier(lookup_modifier(modifier), INTEL_CCS_RC_CC);
+}
+
+/**
+ * intel_fb_is_mc_ccs_modifier: Check if a modifier is an MC CCS modifier type
+ * @modifier: Modifier to check
+ *
+ * Returns:
+ * Returns %true if @modifier is a media compression modifier.
+ */
+bool intel_fb_is_mc_ccs_modifier(u64 modifier)
+{
+	return is_ccs_type_modifier(lookup_modifier(modifier), INTEL_CCS_MC);
+}
+
 static bool plane_has_modifier(struct drm_i915_private *i915,
 			       enum intel_plane_caps plane_caps,
 			       const struct intel_modifier_desc *md)
diff --git a/drivers/gpu/drm/i915/display/intel_fb.h b/drivers/gpu/drm/i915/display/intel_fb.h
index b05c3f64b6f0c..c39bf840edb2c 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.h
+++ b/drivers/gpu/drm/i915/display/intel_fb.h
@@ -31,6 +31,8 @@ enum intel_plane_caps {
 };
 
 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);
 
 bool intel_fb_is_ccs_ctrl_plane(const struct drm_framebuffer *fb, int plane);
 int intel_fb_rc_ccs_cc_plane(const struct drm_framebuffer *fb);
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 82dd3c0cc49ea..e3346da4884d1 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -1067,7 +1067,7 @@ skl_program_plane(struct intel_plane *plane,
 	if (fb->format->is_yuv && icl_is_hdr_plane(dev_priv, plane_id))
 		icl_program_input_csc(plane, crtc_state, plane_state);
 
-	if (fb->modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC)
+	if (intel_fb_is_rc_ccs_cc_modifier(fb->modifier))
 		intel_uncore_write64_fw(&dev_priv->uncore,
 					PLANE_CC_VAL(pipe, plane_id), plane_state->ccval);
 
@@ -1899,7 +1899,7 @@ static bool gen12_plane_format_mod_supported(struct drm_plane *_plane,
 	case DRM_FORMAT_P010:
 	case DRM_FORMAT_P012:
 	case DRM_FORMAT_P016:
-		if (modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS)
+		if (intel_fb_is_mc_ccs_modifier(modifier))
 			return true;
 		fallthrough;
 	case DRM_FORMAT_RGB565:
-- 
2.27.0