[Intel-gfx] [PATCH v2] drm/i915: Add Plane color encoding support for YCBCR_BT2020

[Kishore Kadiyala]

Currently the plane property doesn't have support for YCBCR_BT2020,
which enables the corresponding color conversion mode on plane CSC.
This propery setting is confined only to HDR Planes as there is
limitation in SDR Planes.

V2: Enabling support for YCBCT_BT2020 for HDR planes on
    platforms GLK & ICL

Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Uma Shankar <uma.shankar at intel.com>
---
 drivers/gpu/drm/i915/display/intel_sprite.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index deda351719db..4c25d90d16ce 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -3031,6 +3031,7 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv,
 	struct intel_plane *plane;
 	enum drm_plane_type plane_type;
 	unsigned int supported_rotations;
+	unsigned int supported_csc;
 	const u64 *modifiers;
 	const u32 *formats;
 	int num_formats;
@@ -3105,9 +3106,14 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv,
 					   DRM_MODE_ROTATE_0,
 					   supported_rotations);
 
+	supported_csc = BIT(DRM_COLOR_YCBCR_BT601) | BIT(DRM_COLOR_YCBCR_BT709);
+
+	if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv) &&
+					(icl_is_hdr_plane(dev_priv, plane_id)))
+		supported_csc |= BIT(DRM_COLOR_YCBCR_BT2020);
+
 	drm_plane_create_color_properties(&plane->base,
-					  BIT(DRM_COLOR_YCBCR_BT601) |
-					  BIT(DRM_COLOR_YCBCR_BT709),
+					  supported_csc,
 					  BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
 					  BIT(DRM_COLOR_YCBCR_FULL_RANGE),
 					  DRM_COLOR_YCBCR_BT709,
-- 
2.17.1