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Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/0075-drm-amd-display-Fix-distribution-of-segments-for-PQ.patch')
-rw-r--r--common/recipes-kernel/linux/linux-yocto-4.14.71/0075-drm-amd-display-Fix-distribution-of-segments-for-PQ.patch95
1 files changed, 95 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/0075-drm-amd-display-Fix-distribution-of-segments-for-PQ.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/0075-drm-amd-display-Fix-distribution-of-segments-for-PQ.patch
new file mode 100644
index 00000000..02000d99
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/0075-drm-amd-display-Fix-distribution-of-segments-for-PQ.patch
@@ -0,0 +1,95 @@
+From dcbd3c03aa29210c440812be3d2928f248e89a74 Mon Sep 17 00:00:00 2001
+From: Anthony Koo <Anthony.Koo@amd.com>
+Date: Fri, 16 Dec 2016 12:12:03 -0500
+Subject: [PATCH 0075/4131] drm/amd/display: Fix distribution of segments for
+ PQ
+
+For PQ case, redistribution of segments should be done differently
+for FP16 case in order to handle content above FP16 value of 1.0
+
+Signed-off-by: Anthony Koo <anthony.koo@amd.com>
+Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
+Acked-by: Harry Wentland <Harry.Wentland@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/calcs/gamma_calcs.c | 51 ++++++++++++++++++++--
+ 1 file changed, 48 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/calcs/gamma_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/gamma_calcs.c
+index 973be8f..729652a 100644
+--- a/drivers/gpu/drm/amd/display/dc/calcs/gamma_calcs.c
++++ b/drivers/gpu/drm/amd/display/dc/calcs/gamma_calcs.c
+@@ -387,6 +387,49 @@ static bool build_hw_curve_configuration(
+ return result;
+ }
+
++static bool setup_distribution_points_pq(
++ struct gamma_curve *arr_curve_points,
++ struct curve_points *arr_points,
++ uint32_t *hw_points_num,
++ struct hw_x_point *coordinates_x,
++ enum surface_pixel_format format)
++{
++ struct curve_config cfg;
++
++ cfg.offset = 0;
++ cfg.segments[0] = 2;
++ cfg.segments[1] = 2;
++ cfg.segments[2] = 2;
++ cfg.segments[3] = 2;
++ cfg.segments[4] = 2;
++ cfg.segments[5] = 2;
++ cfg.segments[6] = 3;
++ cfg.segments[7] = 4;
++ cfg.segments[8] = 4;
++ cfg.segments[9] = 4;
++ cfg.segments[10] = 4;
++ cfg.segments[11] = 5;
++ cfg.segments[12] = 5;
++ cfg.segments[13] = 5;
++ cfg.segments[14] = 5;
++ cfg.segments[15] = 5;
++
++ if (format == SURFACE_PIXEL_FORMAT_GRPH_ARGB16161616F ||
++ format == SURFACE_PIXEL_FORMAT_GRPH_ABGR16161616F)
++ cfg.begin = -11;
++ else
++ cfg.begin = -16;
++
++ if (!build_hw_curve_configuration(
++ &cfg, arr_curve_points,
++ arr_points,
++ coordinates_x, hw_points_num)) {
++ ASSERT_CRITICAL(false);
++ return false;
++ }
++ return true;
++}
++
+ static bool setup_distribution_points(
+ struct gamma_curve *arr_curve_points,
+ struct curve_points *arr_points,
+@@ -1414,15 +1457,17 @@ bool calculate_regamma_params(struct pwl_params *params,
+
+ scale_gamma(rgb_user, ramp, dividers);
+
+- setup_distribution_points(arr_curve_points, arr_points,
+- &params->hw_points_num, coordinates_x);
+-
+ if (stream->public.out_transfer_func &&
+ stream->public.out_transfer_func->tf == TRANSFER_FUNCTION_PQ) {
++ setup_distribution_points_pq(arr_curve_points, arr_points,
++ &params->hw_points_num, coordinates_x,
++ surface->public.format);
+ build_regamma_curve_pq(rgb_regamma, rgb_oem, coeff128_oem,
+ ramp, surface, params->hw_points_num,
+ coordinates_x, axix_x_256, dividers);
+ } else {
++ setup_distribution_points(arr_curve_points, arr_points,
++ &params->hw_points_num, coordinates_x);
+ build_regamma_curve(rgb_regamma, rgb_oem, coeff128_oem,
+ ramp, surface, params->hw_points_num,
+ coordinates_x, axix_x_256, dividers);
+--
+2.7.4
+