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drm/amd/display: fix use_max_lb flag for 420 pixel formats 

[ Upstream commit 8809a7a4afe90ad9ffb42f72154d27e7c47551ae ]

Right now the flag simply selects memory config 0 when flag is true
however 420 modes benefit more from memory config 3.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmytro Laktyushkin 2021-04-19 17:50:53 -04:00 committed by Greg Kroah-Hartman
parent cfd8894619
commit 526451e8d2
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c
View File

@ -484,10 +484,13 @@ static enum lb_memory_config dpp1_dscl_find_lb_memory_config(struct dcn10_dpp *d
int vtaps_c = scl_data->taps.v_taps_c;
int ceil_vratio = dc_fixpt_ceil(scl_data->ratios.vert);
int ceil_vratio_c = dc_fixpt_ceil(scl_data->ratios.vert_c);
enum lb_memory_config mem_cfg = LB_MEMORY_CONFIG_0;
if (dpp->base.ctx->dc->debug.use_max_lb)
return mem_cfg;
if (dpp->base.ctx->dc->debug.use_max_lb) {
if (scl_data->format == PIXEL_FORMAT_420BPP8
|| scl_data->format == PIXEL_FORMAT_420BPP10)
return LB_MEMORY_CONFIG_3;
return LB_MEMORY_CONFIG_0;
}
dpp->base.caps->dscl_calc_lb_num_partitions(
scl_data, LB_MEMORY_CONFIG_1, &num_part_y, &num_part_c);