[v2] drm/i915/icl: Fixed Input CSC Co-efficients for BT601/709
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Message ID 1557433103-4006-1-git-send-email-uma.shankar@intel.com
State New
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Series
  • [v2] drm/i915/icl: Fixed Input CSC Co-efficients for BT601/709
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Commit Message

Shankar, Uma May 9, 2019, 8:18 p.m. UTC
Input CSC Co-efficients for BT601 and BT709 YCbCR to RGB
conversion were slightly off. Fixed the same.

v2: Fixed the co-eficients as there was issue with reference
matrix, spotted by Ville.

Signed-off-by: Uma Shankar <uma.shankar@intel.com>
---
 drivers/gpu/drm/i915/intel_sprite.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

Patch
diff mbox series

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index c9c970f..ca15799 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -430,7 +430,7 @@  int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state)
 		 */
 		[DRM_COLOR_YCBCR_BT709] = {
 			0x7C98, 0x7800, 0x0,
-			0x9EF8, 0x7800, 0xABF8,
+			0x9EF8, 0x7800, 0xAC00,
 			0x0, 0x7800,  0x7ED8,
 		},
 		/*
@@ -452,26 +452,26 @@  int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state)
 		/*
 		 * BT.601 Limted range YCbCr -> full range RGB
 		 * The matrix required is :
-		 * [1.164384, 0.000, 1.596370,
-		 *  1.138393, -0.382500, -0.794598,
-		 *  1.138393, 1.971696, 0.0000]
+		 * [1.164384, 0.000, 1.596027,
+		 *  1.164384, -0.39175, -0.812813,
+		 *  1.164384, 2.017232, 0.0000]
 		 */
 		[DRM_COLOR_YCBCR_BT601] = {
 			0x7CC8, 0x7950, 0x0,
-			0x8CB8, 0x7918, 0x9C40,
-			0x0, 0x7918, 0x7FC8,
+			0x8D00, 0x7950, 0x9C88,
+			0x0, 0x7950, 0x6810,
 		},
 		/*
 		 * BT.709 Limited range YCbCr -> full range RGB
 		 * The matrix required is :
-		 * [1.164, 0.000, 1.833671,
-		 *  1.138393, -0.213249, -0.532909,
-		 *  1.138393, 2.112402, 0.0000]
+		 * [1.164384, 0.000, 1.792741,
+		 *  1.164384, -0.213249, -0.532909,
+		 *  1.164384, 2.112402, 0.0000]
 		 */
 		[DRM_COLOR_YCBCR_BT709] = {
-			0x7EA8, 0x7950, 0x0,
-			0x8888, 0x7918, 0xADA8,
-			0x0, 0x7918,  0x6870,
+			0x7E58, 0x7950, 0x0,
+			0x8888, 0x7950, 0xADA8,
+			0x0, 0x7950,  0x6870,
 		},
 		/*
 		 * BT.2020 Limited range YCbCr -> full range RGB