From: Hersen Wu hersenxs.wu@amd.com
commit d6149086b45e150c170beaa4546495fd1880724c upstream.
This change causes regression when eDP and external display in mirror mode. When external display supports low resolution than eDP, use eDP timing to driver external display may cause corruption on external display.
This reverts commit e749dd10e5f292061ad63d2b030194bf7d7d452c.
Cc: stable@vger.kernel.org Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2655 Signed-off-by: Hersen Wu hersenxs.wu@amd.com Reviewed-by: Mario Limonciello mario.limonciello@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -7196,13 +7196,7 @@ static int amdgpu_dm_connector_get_modes drm_add_modes_noedid(connector, 1920, 1080); } else { amdgpu_dm_connector_ddc_get_modes(connector, edid); - /* most eDP supports only timings from its edid, - * usually only detailed timings are available - * from eDP edid. timings which are not from edid - * may damage eDP - */ - if (connector->connector_type != DRM_MODE_CONNECTOR_eDP) - amdgpu_dm_connector_add_common_modes(encoder, connector); + amdgpu_dm_connector_add_common_modes(encoder, connector); amdgpu_dm_connector_add_freesync_modes(connector, edid); } amdgpu_dm_fbc_init(connector);