[RFC PATCH v4 36/42] drm/colorop: add BT2020/BT709 OETF and Inverse OETF

[Harry Wentland]

The BT.709 and BT.2020 OETFs are the same, the only difference
being that the BT.2020 variant is defined with more precision
for 10 and 12-bit per color encodings.

Both are used as encoding functions for video content, and are
therefore defined as OETF (opto-electronic transfer function)
instead of as EOTF (electro-optical transfer function).

Signed-off-by: Harry Wentland <harry.wentland at amd.com>
---
 drivers/gpu/drm/drm_colorop.c | 2 ++
 include/drm/drm_colorop.h     | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/drm_colorop.c b/drivers/gpu/drm/drm_colorop.c
index 781947e42b02..b10cad5a7208 100644
--- a/drivers/gpu/drm/drm_colorop.c
+++ b/drivers/gpu/drm/drm_colorop.c
@@ -40,6 +40,8 @@ static const struct drm_prop_enum_list drm_colorop_type_enum_list[] = {
 static const char * const colorop_curve_1d_type_names[] = {
 	[DRM_COLOROP_1D_CURVE_SRGB_EOTF] = "sRGB EOTF",
 	[DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF] = "sRGB Inverse EOTF",
+	[DRM_COLOROP_1D_CURVE_BT2020_INV_OETF] = "BT.2020 Inverse OETF",
+	[DRM_COLOROP_1D_CURVE_BT2020_OETF] = "BT.2020 OETF",
 	[DRM_COLOROP_1D_CURVE_PQ_125_EOTF] = "PQ 125 EOTF",
 	[DRM_COLOROP_1D_CURVE_PQ_125_INV_EOTF] = "PQ 125 Inverse EOTF",
 };
diff --git a/include/drm/drm_colorop.h b/include/drm/drm_colorop.h
index e06d9ea28efd..28b3136dabad 100644
--- a/include/drm/drm_colorop.h
+++ b/include/drm/drm_colorop.h
@@ -33,6 +33,8 @@
 enum drm_colorop_curve_1d_type {
 	DRM_COLOROP_1D_CURVE_SRGB_EOTF,
 	DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF,
+	DRM_COLOROP_1D_CURVE_BT2020_INV_OETF,
+	DRM_COLOROP_1D_CURVE_BT2020_OETF,
 	DRM_COLOROP_1D_CURVE_PQ_125_EOTF,
 	DRM_COLOROP_1D_CURVE_PQ_125_INV_EOTF,
 	DRM_COLOROP_1D_CURVE_COUNT
-- 
2.44.0