From 932698c88dc414e36e0683fbf6cf551b928441ac Mon Sep 17 00:00:00 2001 From: Swapnil Patel Date: Fri, 24 Feb 2023 20:16:09 -0500 Subject: [PATCH] drm/amd/display: default values for luminance range if they are 0 [why] Currently if invalid luminescence range is reported in edid, then the driver doesn't have default range to fallback to. [How] Add default range if, the range is 0. Reviewed-by: Roman Li Acked-by: Qingqing Zhuo Signed-off-by: Swapnil Patel Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 92783cb974399..1629a750dc551 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3007,8 +3007,14 @@ static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector) caps->aux_support = true; luminance_range = &conn_base->display_info.luminance_range; - caps->aux_min_input_signal = luminance_range->min_luminance; - caps->aux_max_input_signal = luminance_range->max_luminance; + + if (luminance_range->max_luminance) { + caps->aux_min_input_signal = luminance_range->min_luminance; + caps->aux_max_input_signal = luminance_range->max_luminance; + } else { + caps->aux_min_input_signal = 0; + caps->aux_max_input_signal = 512; + } } void amdgpu_dm_update_connector_after_detect( -- 2.30.2