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drm/amd/display: Drop to fail-safe mode if edid is bad

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Provide the connector with a single fail-safe mode of 640x480 for CTS
tests instead of providing a list of possible base modes.

Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mikita Lipski 2018-05-22 15:55:43 -04:00 committed by Alex Deucher
parent 00553cf811
commit 3b070c60ea
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -3424,6 +3424,10 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
struct edid *edid = amdgpu_dm_connector->edid;
encoder = helper->best_encoder(connector);
if (!edid || !drm_edid_is_valid(edid))
return drm_add_modes_noedid(connector, 640, 480);
amdgpu_dm_connector_ddc_get_modes(connector, edid);
amdgpu_dm_connector_add_common_modes(encoder, connector);