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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
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