From: Gabe Teeger <gabe.tee...@amd.com>
[ Upstream commit abc0ad6d08440761b199988c329ad7ac83f41c9b ]
[why]
Underflow and flickering was occuring due to high scaling ratios
when resizing videos.
[how]
Limit the scaling ratios by increasing the max scaling factor
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
Signed-off-by: Gabe Teeger <gabe.tee...@amd.com>
Signed-off-by: Tom Chung <chiahsuan.ch...@amd.com>
Tested-by: Daniel Wheeler <daniel.whee...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
.../drm/amd/display/dc/resource/dcn301/dcn301_resource.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c
b/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c
index 7d04739c3ba14..4bbbe07ecde7d 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn301/dcn301_resource.c
@@ -671,9 +671,9 @@ static const struct dc_plane_cap plane_cap = {
/* 6:1 downscaling ratio: 1000/6 = 166.666 */
.max_downscale_factor = {
- .argb8888 = 167,
- .nv12 = 167,
- .fp16 = 167
+ .argb8888 = 358,
+ .nv12 = 358,
+ .fp16 = 358
},
64,
64
@@ -694,7 +694,7 @@ static const struct dc_debug_options debug_defaults_drv = {
.disable_dcc = DCC_ENABLE,
.vsr_support = true,
.performance_trace = false,
- .max_downscale_src_width = 7680,/*upto 8K*/
+ .max_downscale_src_width = 4096,/*upto true 4k*/
.scl_reset_length10 = true,
.sanity_checks = false,
.underflow_assert_delay_us = 0xFFFFFFFF,
--
2.39.5
