From: Jaehyun Chung <jaehyun.chung@amd.com>
Date: Fri, 27 Aug 2021 20:10:54 +0000 (-0400)
Subject: drm/amd/display: Correct degamma coefficients
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1b76cd177288bc2ca6ff05ec244361271151a57d;p=linux.git

drm/amd/display: Correct degamma coefficients

[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>
---

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 275f11f8bea3f..2465c88e28793 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};