[RFC PATCH v2 01/11] include/drm-uapi: Add DRM_COLOROP_CSC_FF and drm_colorop_csc_ff_type

[Harry Wentland <harry.wentland@amd.com>]

Add DRM_COLOROP_CSC_FF to the colorop type enumeration and define
the drm_colorop_csc_ff_type enum with the supported fixed-function
CSC modes. This includes full-range YUV to RGB conversions (BT.601,
BT.709, BT.2020), limited-range variants, and RGB709 to RGB2020.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
---
 include/drm-uapi/drm_mode.h | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/include/drm-uapi/drm_mode.h b/include/drm-uapi/drm_mode.h
index de10ce859fdb..2716f48c18ce 100644
--- a/include/drm-uapi/drm_mode.h
+++ b/include/drm-uapi/drm_mode.h
@@ -934,6 +934,31 @@ enum drm_colorop_type {
 	 * LUT size is advertised via the SIZE property.
 	 */
 	DRM_COLOROP_3D_LUT,
+
+	/**
+	 * @DRM_COLOROP_CSC_FF:
+	 *
+	 * A fixed-function Color Space Conversion block where the coefficients
+	 * are not programmable but selected from predefined hardware modes via
+	 * the CSC_FF_TYPE enum property.
+	 */
+	DRM_COLOROP_CSC_FF,
+};
+
+/**
+ * enum drm_colorop_csc_ff_type - type of CSC Fixed-Function
+ *
+ * Describes a CSC operation to be applied by the DRM_COLOROP_CSC_FF colorop.
+ */
+enum drm_colorop_csc_ff_type {
+	DRM_COLOROP_CSC_FF_YUV601_RGB601,
+	DRM_COLOROP_CSC_FF_YUV709_RGB709,
+	DRM_COLOROP_CSC_FF_YUV2020_RGB2020,
+	DRM_COLOROP_CSC_FF_RGB709_RGB2020,
+	DRM_COLOROP_CSC_FF_YUV601_LIMITED_RGB601,
+	DRM_COLOROP_CSC_FF_YUV709_LIMITED_RGB709,
+	DRM_COLOROP_CSC_FF_YUV2020_LIMITED_RGB2020,
+	DRM_COLOROP_CSC_FF_COUNT
 };
 
 /**
-- 
2.53.0