From 4fa996faf6841ba6029a9f4db4a6e8765ef4d169 Mon Sep 17 00:00:00 2001
From: Jaehyun Chung <jaehyun.chung@amd.com>
Date: Fri, 27 Aug 2021 16:10:54 -0400
Subject: drm/amd/display: Correct degamma coefficients
Git-commit: 1b76cd177288bc2ca6ff05ec244361271151a57d
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
[Why]
Some incorrect coefficients were being used
Reviewed-by: Michael Strauss <michael.strauss@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Jaehyun Chung <jaehyun.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/modules/color/color_gamma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
index 275f11f8bea3..2465c88e2879 100644
--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -61,7 +61,7 @@ static const int32_t regamma_numerator03[] = { 55, 99, 0, 0, 0};
static const int32_t regamma_numerator04[] = { 55, 99, 0, 0, 0};
static const int32_t regamma_numerator05[] = { 2400, 2200, 2200, 2400, 2600};
-static const int32_t degamma_numerator01[] = { 40450, 810000, 0, 0, 0};
+static const int32_t degamma_numerator01[] = { 404500, 180000, 0, 0, 0};
static const int32_t degamma_numerator02[] = { 12920, 4500, 0, 0, 0};
static const int32_t degamma_numerator03[] = { 55, 99, 0, 0, 0};
static const int32_t degamma_numerator04[] = { 55, 99, 0, 0, 0};
--
2.38.1