Currently input csc for YCbCR to RGB conversion handles only
BT601 and Bt709. Extending it to support BT2020 as well.
v2: Fixed the co-efficients for LR to FR conversion,
as suggested by Ville.
v3: Fixed Y Pre-offset in case of Full Range YCbCr as suggested
by Ville.
v4: Split the v2 and v3 changes.
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_sprite.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 2913e89..4f513600 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -433,6 +433,18 @@ int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state)
0x9EF8, 0x7800, 0xABF8,
0x0, 0x7800, 0x7ED8,
},
+ /*
+ * BT.2020 full range YCbCr -> full range RGB
+ * The matrix required is :
+ * [1.000, 0.000, 1.474,
+ * 1.000, -0.1645, -0.5713,
+ * 1.000, 1.8814, 0.0000]
+ */
+ [DRM_COLOR_YCBCR_BT2020] = {
+ 0x7BC8, 0x7800, 0x0,
+ 0x8928, 0x7800, 0xAA88,
+ 0x0, 0x7800, 0x7F10,
+ },
};
/* Matrix for Limited Range to Full Range Conversion */
@@ -461,6 +473,18 @@ int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state)
0x8888, 0x7918, 0xADA8,
0x0, 0x7918, 0x6870,
},
+ /*
+ * BT.2020 Limited range YCbCr -> full range RGB
+ * The matrix required is :
+ * [1.164, 0.000, 1.678,
+ * 1.164, -0.1873, -0.6504,
+ * 1.164, 2.1417, 0.0000]
+ */
+ [DRM_COLOR_YCBCR_BT2020] = {
+ 0x7D70, 0x7950, 0x0,
+ 0x8A68, 0x7950, 0xAC00,
+ 0x0, 0x7950, 0x6890,
+ },
};
const u16 *csc;
--
1.9.1
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