[RFC 20/33] drm/i915/color: Add color pipelines to plane

[Uma Shankar]

From: Chaitanya Kumar Borah <chaitanya.kumar.borah at intel.com>

Add supported plane color pipelines. To represent all
hardware blocks in their inactive state, we introduce a pipeline
called "no color pipeline" which is the default pipeline.
Add respective color pipelines for SDR and HDR planes. Create and
attach plane enum property "GET_COLOR_PIPELINE" to expose these
pipelines to userspace.

Co-developed-by: Uma Shankar <uma.shankar at intel.com>
Signed-off-by: Uma Shankar <uma.shankar at intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah at intel.com>
---
 drivers/gpu/drm/i915/display/intel_color.c | 31 +++++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_color.h |  3 ++-
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index a8c6be70c859..9f5d2cd0f97a 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -3977,7 +3977,6 @@ struct drm_color_op color_pipeline_hdr[] = {
 	},
 };
 
-__maybe_unused
 static int intel_prepare_plane_color_pipeline(struct drm_plane *plane)
 {
 	struct drm_i915_private *i915 = to_i915(plane->dev);
@@ -4039,6 +4038,36 @@ static int intel_prepare_plane_color_pipeline(struct drm_plane *plane)
 	return ret;
 };
 
+__maybe_unused
+void intel_color_plane_init(struct drm_plane *plane)
+{
+	struct drm_i915_private *i915 = to_i915(plane->dev);
+
+	if (DISPLAY_VER(i915) < 13)
+		return;
+
+	drm_plane_create_get_color_pipeline_property(plane->dev, plane, 2);
+
+	intel_prepare_plane_color_pipeline(plane);
+
+	/*
+	 * default pipeline is set as 0 or "no color pipeline". All color h/w
+	 * blocks are disabled at this stage.
+	 */
+	drm_plane_add_color_pipeline(plane, "no color pipeline", NULL, 0);
+
+	if (icl_is_hdr_plane(i915, to_intel_plane(plane)->id))
+		drm_plane_add_color_pipeline(plane, "color pipeline hdr",
+					     color_pipeline_hdr,
+					     sizeof(color_pipeline_hdr));
+	else
+		drm_plane_add_color_pipeline(plane, "color pipeline sdr",
+					     color_pipeline_sdr,
+					     sizeof(color_pipeline_sdr));
+
+	drm_plane_attach_get_color_pipeline_property(plane);
+}
+
 void intel_color_crtc_init(struct intel_crtc *crtc)
 {
 	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
diff --git a/drivers/gpu/drm/i915/display/intel_color.h b/drivers/gpu/drm/i915/display/intel_color.h
index 8002492be709..aa649d13c6fa 100644
--- a/drivers/gpu/drm/i915/display/intel_color.h
+++ b/drivers/gpu/drm/i915/display/intel_color.h
@@ -10,6 +10,7 @@
 
 struct intel_crtc_state;
 struct intel_crtc;
+struct drm_plane;
 struct drm_i915_private;
 struct drm_property_blob;
 
@@ -29,5 +30,5 @@ bool intel_color_lut_equal(const struct intel_crtc_state *crtc_state,
 			   const struct drm_property_blob *blob2,
 			   bool is_pre_csc_lut);
 void intel_color_assert_luts(const struct intel_crtc_state *crtc_state);
-
+void intel_color_plane_init(struct drm_plane *plane);
 #endif /* __INTEL_COLOR_H__ */
-- 
2.38.1