aboutsummaryrefslogtreecommitdiffstats
path: root/common/recipes-kernel/linux/linux-yocto-4.14.71/4459-drm-amd-display-truncate-scaling-ratios-and-inits-to.patch
diff options
context:
space:
mode:
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4459-drm-amd-display-truncate-scaling-ratios-and-inits-to.patch')
-rw-r--r--common/recipes-kernel/linux/linux-yocto-4.14.71/4459-drm-amd-display-truncate-scaling-ratios-and-inits-to.patch62
1 files changed, 62 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4459-drm-amd-display-truncate-scaling-ratios-and-inits-to.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4459-drm-amd-display-truncate-scaling-ratios-and-inits-to.patch
new file mode 100644
index 00000000..1ec12351
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4459-drm-amd-display-truncate-scaling-ratios-and-inits-to.patch
@@ -0,0 +1,62 @@
+From 0f0c02ca8ccb66fe6b834c9e8e7b8338be5d2600 Mon Sep 17 00:00:00 2001
+From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
+Date: Wed, 18 Apr 2018 14:19:23 -0400
+Subject: [PATCH 4459/5725] drm/amd/display: truncate scaling ratios and inits
+ to 19 bit precision
+
+Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Acked-by: Harry Wentland <harry.wentland@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 25 +++++++++++++++--------
+ 1 file changed, 17 insertions(+), 8 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+index 68c1a99..f02f366 100644
+--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
++++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+@@ -651,6 +651,14 @@ static void calculate_scaling_ratios(struct pipe_ctx *pipe_ctx)
+ pipe_ctx->plane_res.scl_data.ratios.horz_c.value /= 2;
+ pipe_ctx->plane_res.scl_data.ratios.vert_c.value /= 2;
+ }
++ pipe_ctx->plane_res.scl_data.ratios.horz = dc_fixpt_truncate(
++ pipe_ctx->plane_res.scl_data.ratios.horz, 19);
++ pipe_ctx->plane_res.scl_data.ratios.vert = dc_fixpt_truncate(
++ pipe_ctx->plane_res.scl_data.ratios.vert, 19);
++ pipe_ctx->plane_res.scl_data.ratios.horz_c = dc_fixpt_truncate(
++ pipe_ctx->plane_res.scl_data.ratios.horz_c, 19);
++ pipe_ctx->plane_res.scl_data.ratios.vert_c = dc_fixpt_truncate(
++ pipe_ctx->plane_res.scl_data.ratios.vert_c, 19);
+ }
+
+ static void calculate_inits_and_adj_vp(struct pipe_ctx *pipe_ctx, struct view *recout_skip)
+@@ -687,17 +695,18 @@ static void calculate_inits_and_adj_vp(struct pipe_ctx *pipe_ctx, struct view *r
+ * init_bot = init + scaling_ratio
+ * init_c = init + truncated_vp_c_offset(from calculate viewport)
+ */
+- data->inits.h = dc_fixpt_div_int(
+- dc_fixpt_add_int(data->ratios.horz, data->taps.h_taps + 1), 2);
++ data->inits.h = dc_fixpt_truncate(dc_fixpt_div_int(
++ dc_fixpt_add_int(data->ratios.horz, data->taps.h_taps + 1), 2), 19);
+
+- data->inits.h_c = dc_fixpt_add(data->inits.h_c, dc_fixpt_div_int(
+- dc_fixpt_add_int(data->ratios.horz_c, data->taps.h_taps_c + 1), 2));
++ data->inits.h_c = dc_fixpt_truncate(dc_fixpt_add(data->inits.h_c, dc_fixpt_div_int(
++ dc_fixpt_add_int(data->ratios.horz_c, data->taps.h_taps_c + 1), 2)), 19);
+
+- data->inits.v = dc_fixpt_div_int(
+- dc_fixpt_add_int(data->ratios.vert, data->taps.v_taps + 1), 2);
++ data->inits.v = dc_fixpt_truncate(dc_fixpt_div_int(
++ dc_fixpt_add_int(data->ratios.vert, data->taps.v_taps + 1), 2), 19);
++
++ data->inits.v_c = dc_fixpt_truncate(dc_fixpt_add(data->inits.v_c, dc_fixpt_div_int(
++ dc_fixpt_add_int(data->ratios.vert_c, data->taps.v_taps_c + 1), 2)), 19);
+
+- data->inits.v_c = dc_fixpt_add(data->inits.v_c, dc_fixpt_div_int(
+- dc_fixpt_add_int(data->ratios.vert_c, data->taps.v_taps_c + 1), 2));
+
+
+ /* Adjust for viewport end clip-off */
+--
+2.7.4
+