Commit 1b5c30bf authored by Max Erenberg's avatar Max Erenberg Committed by Alex Deucher
Browse files

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



[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: default avatarHarry Vanzylldejong <harry.vanzylldejong@amd.com>
Reviewed-by: default avatarEvgenii Krasnikov <Evgenii.Krasnikov@amd.com>
Reviewed-by: default avatarNicholas Choi <Nicholas.Choi@amd.com>
Acked-by: default avatarPavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: default avatarMax Erenberg <merenber@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5d5af340

drivers/gpu/drm/amd/display/dc/core/dc_link.c

+5 −0
Original line number Diff line number Diff line
@@ -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;