From: Mikita Lipski <[email protected]> [why] In case if edid is null or corrupted we need to manually add a single failsafe mode (640x480). If zero modes returned DRM adds a different failsafe mode that is not accepted by DP 1.2 compliance test
[how] Return the number of modes manually added Change-Id: I3ce71263cb564c9a5aea58e248c0fda569c87eb5 Signed-off-by: Mikita Lipski <[email protected]> Reviewed-by: Sun peng Li <[email protected]> Acked-by: Bhawanpreet Lakha <[email protected]> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) 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 dac12a58f534..568a041c9141 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3530,7 +3530,8 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector) encoder = helper->best_encoder(connector); if (!edid || !drm_edid_is_valid(edid)) { - drm_add_modes_noedid(connector, 640, 480); + amdgpu_dm_connector->num_modes = + drm_add_modes_noedid(connector, 640, 480); } else { amdgpu_dm_connector_ddc_get_modes(connector, edid); amdgpu_dm_connector_add_common_modes(encoder, connector); -- 2.14.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
