Commit 39d81457 authored by Mario Limonciello's avatar Mario Limonciello Committed by Alex Deucher
Browse files

drm/amd/display: Don't allow OLED to go down to fully off 

[Why]
OLED panels can be fully off, but this behavior is unexpected.

[How]
Ensure that minimum luminance is at least 1.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4338


Reviewed-by: default avatarAlex Hung <alex.hung@amd.com>
Signed-off-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarRay Wu <ray.wu@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 51496c77)
parent 84f2902b

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+7 −5
Original line number Diff line number Diff line
@@ -3610,13 +3610,15 @@ static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector) 


	luminance_range = &conn_base->display_info.luminance_range;



	if (luminance_range->max_luminance) {

		caps->aux_min_input_signal = luminance_range->min_luminance;

	if (luminance_range->max_luminance)

		caps->aux_max_input_signal = luminance_range->max_luminance;

	} else {

		caps->aux_min_input_signal = 0;

	else

		caps->aux_max_input_signal = 512;

	}



	if (luminance_range->min_luminance)

		caps->aux_min_input_signal = luminance_range->min_luminance;

	else

		caps->aux_min_input_signal = 1;



	min_input_signal_override = drm_get_panel_min_brightness_quirk(aconnector->drm_edid);

	if (min_input_signal_override >= 0)