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From 28adce9f6ed1135f7eca199ff9ed4557de48bd93 Mon Sep 17 00:00:00 2001
From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Fri, 8 Jun 2018 13:07:53 -0500
Subject: [PATCH 4796/5725] drm/amd/display: Check scaling ration not viewports
params.
In case of roation, width and height in viewport is difference
between viewport and h_active and v_active, while this is not scaling.
The right way is check ratios in scaling data,
to determine it is a scaling case or not.
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@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/dcn10/dcn10_dpp.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
index c69fa4b..742fd49 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp.c
@@ -145,10 +145,10 @@ static bool dpp_get_optimal_number_of_taps(
pixel_width = scl_data->viewport.width;
/* Some ASICs does not support FP16 scaling, so we reject modes require this*/
- if (scl_data->viewport.width != scl_data->h_active &&
- scl_data->viewport.height != scl_data->v_active &&
+ if (scl_data->format == PIXEL_FORMAT_FP16 &&
dpp->caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT &&
- scl_data->format == PIXEL_FORMAT_FP16)
+ scl_data->ratios.horz.value != dc_fixpt_one.value &&
+ scl_data->ratios.vert.value != dc_fixpt_one.value)
return false;
if (scl_data->viewport.width > scl_data->h_active &&
--
2.7.4
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