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authorUma Shankar <uma.shankar@intel.com>2019-06-28 13:32:28 +0530
committerVille Syrjälä <ville.syrjala@linux.intel.com>2019-07-10 15:20:49 +0300
commit27ee72477c9b77ebf0e2827b8679b547ab556673 (patch)
tree51f20baf2d2b0b2123a59b74674c3464d9f697ad /drivers/gpu
parent14bfcd3e0daeb0f757a02aac85fd03e0933ab37e (diff)
drm/i915/icl: Handle YCbCr to RGB conversion for BT2020 case
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. v5: Rebase v6: Fix a rebase fumble. Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Shashank Sharma <shashank.sharma@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190628080230.27492-2-uma.shankar@intel.com
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/display/intel_sprite.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index 34586f29be60..aeeeffbe4683 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -444,6 +444,18 @@ icl_program_input_csc(struct intel_plane *plane,
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 */
@@ -472,6 +484,18 @@ icl_program_input_csc(struct intel_plane *plane,
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;