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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
This commit is contained in:
Uma Shankar 2019-06-28 13:32:28 +05:30 committed by Ville Syrjälä
parent 14bfcd3e0d
commit 27ee72477c
1 changed files with 24 additions and 0 deletions
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24
drivers/gpu/drm/i915/display/intel_sprite.c
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@ -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;