From: Uma Shankar <uma.shankar@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [v4 1/3] drm/i915/icl: Handle YCbCr to RGB conversion for BT2020 case
Date: Fri, 28 Jun 2019 12:23:57 +0530 [thread overview]
Message-ID: <20190628065359.10375-2-uma.shankar@intel.com> (raw)
In-Reply-To: <20190628065359.10375-1-uma.shankar@intel.com>
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
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>
---
drivers/gpu/drm/i915/display/intel_sprite.c | 24 +++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index 004b52027ae8..29861cf644a4 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;
--
2.22.0
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next prev parent reply other threads:[~2019-06-28 6:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-28 6:53 [v4 0/3] Extend BT2020 support in iCSC and fixes Uma Shankar
2019-06-28 6:41 ` ✗ Fi.CI.BAT: failure for Extend BT2020 support in iCSC and fixes (rev4) Patchwork
2019-06-28 6:53 ` Uma Shankar [this message]
2019-06-28 6:53 ` [v4 2/3] drm/i915/icl: Fix Y pre-offset for Full Range YCbCr Uma Shankar
2019-06-28 6:53 ` [v4 3/3] drm/i915/icl: Fixed Input CSC Co-efficients for BT601/709 Uma Shankar
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