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drm/amd/display: Disallow entering PSR when panel is disconnected

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[WHY]
The dGPU cannot enter PSR when it is not connected to a panel.

[HOW]
Added a check to dc_link_set_psr_allow_active
which returns early if panel is disconnected.

Reviewed-by: Harry Vanzylldejong <harry.vanzylldejong@amd.com>
Reviewed-by: Evgenii Krasnikov <Evgenii.Krasnikov@amd.com>
Reviewed-by: Nicholas Choi <Nicholas.Choi@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: Max Erenberg <merenber@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Max Erenberg 2021-11-23 15:10:16 -05:00 committed by Alex Deucher
parent 5d5af34072
commit 1b5c30bf41
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/display/dc/core/dc_link.c
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@ -3079,6 +3079,11 @@ bool dc_link_set_psr_allow_active(struct dc_link *link, const bool *allow_active
if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
return false;
if (allow_active && link->type == dc_connection_none) {
// Don't enter PSR if panel is not connected
return false;
}
/* Set power optimization flag */
if (power_opts && link->psr_settings.psr_power_opt != *power_opts) {
link->psr_settings.psr_power_opt = *power_opts;