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drm/amd/display: Copy over soc values before bounding box creation

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[Why]
With certain fclock overclocks, state 1 may be chosen
as the closest clock level. This may result in this state
being empty if not populated beforehand, resulting in
black screens and screen corruption.

[How]
Copy over all soc states to clock_limits before bounding
box creation to avoid any cases with empty states.

Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Qingqing Zhuo <Qingqing.Zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sung Lee 2021-02-04 08:21:15 -05:00 committed by Alex Deucher
parent f9b4f20c47
commit bbaef58591
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
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@ -1599,6 +1599,11 @@ static void update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_param
dcn2_1_soc.num_chans = bw_params->num_channels;
ASSERT(clk_table->num_entries);
/* Copy dcn2_1_soc.clock_limits to clock_limits to avoid copying over null states later */
for (i = 0; i < dcn2_1_soc.num_states + 1; i++) {
clock_limits[i] = dcn2_1_soc.clock_limits[i];
}
for (i = 0; i < clk_table->num_entries; i++) {
/* loop backwards*/
for (closest_clk_lvl = 0, j = dcn2_1_soc.num_states - 1; j >= 0; j--) {