diff options
| author | Alex Deucher | 2011-10-04 12:23:24 -0400 |
|---|---|---|
| committer | Dave Airlie | 2011-10-05 10:31:40 +0100 |
| commit | 6777a4f6898a53974ef7fe7ce09ec41fae0f32db (patch) | |
| tree | e5680a33625e3a69d78c11e1fb56849e2c573beb /drivers | |
| parent | 4f332844cc87c5f99c5300f788abbe8a8c731390 (diff) | |
drm/radeon/kms: fix dp_detect handling for DP bridge chips
The HPD pin is not reliable for detecting whether a monitor
is connected or not. Skip HPD and just use DDC or load
detection.
Fixes phantom VGA connected bugs.
[Michel: fixes phantom VGA bugs on his llano system.]
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_connectors.c | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index bce63fd329d4..449c3d8c6836 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -1303,23 +1303,14 @@ radeon_dp_detect(struct drm_connector *connector, bool force) /* get the DPCD from the bridge */ radeon_dp_getdpcd(radeon_connector); - if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) - ret = connector_status_connected; - else { - /* need to setup ddc on the bridge */ - if (encoder) - radeon_atom_ext_encoder_setup_ddc(encoder); + if (encoder) { + /* setup ddc on the bridge */ + radeon_atom_ext_encoder_setup_ddc(encoder); if (radeon_ddc_probe(radeon_connector, - radeon_connector->requires_extended_probe)) + radeon_connector->requires_extended_probe)) /* try DDC */ ret = connector_status_connected; - } - - if ((ret == connector_status_disconnected) && - radeon_connector->dac_load_detect) { - struct drm_encoder *encoder = radeon_best_single_encoder(connector); - struct drm_encoder_helper_funcs *encoder_funcs; - if (encoder) { - encoder_funcs = encoder->helper_private; + else if (radeon_connector->dac_load_detect) { /* try load detection */ + struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; ret = encoder_funcs->detect(encoder, connector); } } |