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Revert "drm/dp/mst: change MST detection scheme" 

This reverts commit cfcfa086d4.

This causes the tiling properties to break in some unexpected ways,

Revert it for now.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2016-02-17 11:36:38 +10:00
parent 65c23c65be
commit 8ae22cb419
1 changed files with 18 additions and 19 deletions
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37
drivers/gpu/drm/drm_dp_mst_topology.c
View File

@ -1159,11 +1159,13 @@ static void drm_dp_add_port(struct drm_dp_mst_branch *mstb,
drm_dp_put_port(port);
goto out;
}
drm_mode_connector_set_tile_property(port->connector);
if (port->port_num >= DP_MST_LOGICAL_PORT_0) {
port->cached_edid = drm_get_edid(port->connector, &port->aux.ddc);
drm_mode_connector_set_tile_property(port->connector);
}
(*mstb->mgr->cbs->register_connector)(port->connector);
}
out:
/* put reference to this port */
drm_dp_put_port(port);
@ -1188,8 +1190,8 @@ static void drm_dp_update_port(struct drm_dp_mst_branch *mstb,
port->ddps = conn_stat->displayport_device_plug_status;
if (old_ddps != port->ddps) {
dowork = true;
if (port->ddps) {
dowork = true;
} else {
port->available_pbn = 0;
}
@ -1294,13 +1296,8 @@ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *m
if (port->input)
continue;
if (!port->ddps) {
if (port->cached_edid) {
kfree(port->cached_edid);
port->cached_edid = NULL;
}
if (!port->ddps)
continue;
}
if (!port->available_pbn)
drm_dp_send_enum_path_resources(mgr, mstb, port);
@ -1311,12 +1308,6 @@ static void drm_dp_check_and_send_link_address(struct drm_dp_mst_topology_mgr *m
drm_dp_check_and_send_link_address(mgr, mstb_child);
drm_dp_put_mst_branch_device(mstb_child);
}
} else if (port->pdt == DP_PEER_DEVICE_SST_SINK ||
port->pdt == DP_PEER_DEVICE_DP_LEGACY_CONV) {
if (!port->cached_edid) {
port->cached_edid =
drm_get_edid(port->connector, &port->aux.ddc);
}
}
}
}
@ -1336,8 +1327,6 @@ static void drm_dp_mst_link_probe_work(struct work_struct *work)
drm_dp_check_and_send_link_address(mgr, mstb);
drm_dp_put_mst_branch_device(mstb);
}
(*mgr->cbs->hotplug)(mgr);
}
static bool drm_dp_validate_guid(struct drm_dp_mst_topology_mgr *mgr,
@ -1597,6 +1586,7 @@ static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
for (i = 0; i < txmsg->reply.u.link_addr.nports; i++) {
drm_dp_add_port(mstb, mgr->dev, &txmsg->reply.u.link_addr.ports[i]);
}
(*mgr->cbs->hotplug)(mgr);
}
} else {
mstb->link_address_sent = false;
@ -2293,6 +2283,8 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
drm_dp_update_port(mstb, &msg.u.conn_stat);
DRM_DEBUG_KMS("Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n", msg.u.conn_stat.port_number, msg.u.conn_stat.legacy_device_plug_status, msg.u.conn_stat.displayport_device_plug_status, msg.u.conn_stat.message_capability_status, msg.u.conn_stat.input_port, msg.u.conn_stat.peer_device_type);
(*mgr->cbs->hotplug)(mgr);
} else if (msg.req_type == DP_RESOURCE_STATUS_NOTIFY) {
drm_dp_send_up_ack_reply(mgr, mgr->mst_primary, msg.req_type, seqno, false);
if (!mstb)
@ -2379,6 +2371,10 @@ enum drm_connector_status drm_dp_mst_detect_port(struct drm_connector *connector
case DP_PEER_DEVICE_SST_SINK:
status = connector_status_connected;
/* for logical ports - cache the EDID */
if (port->port_num >= 8 && !port->cached_edid) {
port->cached_edid = drm_get_edid(connector, &port->aux.ddc);
}
break;
case DP_PEER_DEVICE_DP_LEGACY_CONV:
if (port->ldps)
@ -2433,7 +2429,10 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_
if (port->cached_edid)
edid = drm_edid_duplicate(port->cached_edid);
else {
edid = drm_get_edid(connector, &port->aux.ddc);
drm_mode_connector_set_tile_property(connector);
}
port->has_audio = drm_detect_monitor_audio(edid);
drm_dp_put_port(port);
return edid;