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drm/radeon/kms: rework radeon_dp_detect() logic

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If the connector is eDP, it can only be DP, not TMDS.
Always set the detected sink type.  If the sink is
detected as non-DP, but there is no EDID, you can still
manually force the port on.  If the sink type is DP
and there's no DPCD, there's no way to force the monitor
on since you need both ends to train the link.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-08-19 17:29:03 -04:00 committed by Dave Airlie
parent 9c1ac0c6b9
commit 6f50eae75b
1 changed files with 11 additions and 10 deletions
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21
drivers/gpu/drm/radeon/radeon_connectors.c
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@ -977,24 +977,25 @@ static enum drm_connector_status radeon_dp_detect(struct drm_connector *connecto
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
enum drm_connector_status ret = connector_status_disconnected;
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
u8 sink_type;
if (radeon_connector->edid) {
kfree(radeon_connector->edid);
radeon_connector->edid = NULL;
}
sink_type = radeon_dp_getsinktype(radeon_connector);
if ((sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
(sink_type == CONNECTOR_OBJECT_ID_eDP)) {
if (radeon_dp_getdpcd(radeon_connector)) {
radeon_dig_connector->dp_sink_type = sink_type;
if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
/* eDP is always DP */
radeon_dig_connector->dp_sink_type = CONNECTOR_OBJECT_ID_DISPLAYPORT;
if (radeon_dp_getdpcd(radeon_connector))
ret = connector_status_connected;
}
} else {
if (radeon_ddc_probe(radeon_connector)) {
radeon_dig_connector->dp_sink_type = sink_type;
ret = connector_status_connected;
radeon_dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector);
if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) {
if (radeon_dp_getdpcd(radeon_connector))
ret = connector_status_connected;
} else {
if (radeon_ddc_probe(radeon_connector))
ret = connector_status_connected;
}
}