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

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[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: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mario Limonciello
2025-06-19 09:29:13 -05:00
committed by Alex Deucher
parent fe7645d22b
commit 51496c7737
1 changed files with 7 additions and 5 deletions
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12
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -3644,13 +3644,15 @@ 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)