diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/2009-drm-amd-display-Don-t-use-ROM-for-output-TF-if-GAMMA.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/2009-drm-amd-display-Don-t-use-ROM-for-output-TF-if-GAMMA.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/2009-drm-amd-display-Don-t-use-ROM-for-output-TF-if-GAMMA.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/2009-drm-amd-display-Don-t-use-ROM-for-output-TF-if-GAMMA.patch new file mode 100644 index 00000000..29aaa3d7 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/2009-drm-amd-display-Don-t-use-ROM-for-output-TF-if-GAMMA.patch @@ -0,0 +1,38 @@ +From 988774b776ee937fa2b269fe06601f7fd37e6063 Mon Sep 17 00:00:00 2001 +From: Hugo Hu <hugo.hu@amd.com> +Date: Fri, 3 May 2019 15:36:29 +0800 +Subject: [PATCH 2009/2940] drm/amd/display: Don't use ROM for output TF if + GAMMA_CS_TFM_1D +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +We can’t use hardcoded SRGB ROM for output TF if we have GAMMA_CS_TFM_1D +(unless we know 1D LUT is identity), so we never want to return here early. +We apply the LUT part of ColorTransform3x4 only in apply_lut_1d() which is +called near the end of that function. + +Signed-off-by: Hugo Hu <hugo.hu@amd.com> +Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +--- + drivers/gpu/drm/amd/display/modules/color/color_gamma.c | 3 ++- + 1 file changed, 2 insertions(+), 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 8601d371776e..369a89071217 100644 +--- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c ++++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c +@@ -1569,7 +1569,8 @@ bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf, + output_tf->tf == TRANSFER_FUNCTION_SRGB) { + if (ramp == NULL) + return true; +- if (ramp->is_identity || (!mapUserRamp && ramp->type == GAMMA_RGB_256)) ++ if ((ramp->is_identity && ramp->type != GAMMA_CS_TFM_1D) || ++ (!mapUserRamp && ramp->type == GAMMA_RGB_256)) + return true; + } + +-- +2.17.1 + |