Merge tag 'powerpc-4.15-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...

[sfrench/cifs-2.6.git] / drivers / gpu / drm / amd / display / amdgpu_dm / amdgpu_dm_mst_types.c

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index f8efb98b1fa72f86ecbec4c568a653af164c7daa..638c2c2b5cd79069e7312b7d7f23a28b6f5eb3b6 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -185,6 +185,42 @@ static int dm_connector_update_modes(struct drm_connector *connector,
        return ret;
 }
 
+void dm_dp_mst_dc_sink_create(struct drm_connector *connector)
+{
+       struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
+       struct edid *edid;
+       struct dc_sink *dc_sink;
+       struct dc_sink_init_data init_params = {
+                       .link = aconnector->dc_link,
+                       .sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST };
+
+       edid = drm_dp_mst_get_edid(connector, &aconnector->mst_port->mst_mgr, aconnector->port);
+
+       if (!edid) {
+               drm_mode_connector_update_edid_property(
+                       &aconnector->base,
+                       NULL);
+               return;
+       }
+
+       aconnector->edid = edid;
+
+       dc_sink = dc_link_add_remote_sink(
+               aconnector->dc_link,
+               (uint8_t *)aconnector->edid,
+               (aconnector->edid->extensions + 1) * EDID_LENGTH,
+               &init_params);
+
+       dc_sink->priv = aconnector;
+       aconnector->dc_sink = dc_sink;
+
+       amdgpu_dm_add_sink_to_freesync_module(
+                       connector, aconnector->edid);
+
+       drm_mode_connector_update_edid_property(
+                                       &aconnector->base, aconnector->edid);
+}
+
 static int dm_dp_mst_get_modes(struct drm_connector *connector)
 {
        struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
@@ -311,6 +347,7 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
                        drm_mode_connector_set_path_property(connector, pathprop);
 
                        drm_connector_list_iter_end(&conn_iter);
+                       aconnector->mst_connected = true;
                        return &aconnector->base;
                }
        }
@@ -363,6 +400,8 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
         */
        amdgpu_dm_connector_funcs_reset(connector);
 
+       aconnector->mst_connected = true;
+
        DRM_INFO("DM_MST: added connector: %p [id: %d] [master: %p]\n",
                        aconnector, connector->base.id, aconnector->mst_port);
 
@@ -394,6 +433,8 @@ static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
        drm_mode_connector_update_edid_property(
                        &aconnector->base,
                        NULL);
+
+       aconnector->mst_connected = false;
 }
 
 static void dm_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
@@ -404,10 +445,18 @@ static void dm_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
        drm_kms_helper_hotplug_event(dev);
 }
 
+static void dm_dp_mst_link_status_reset(struct drm_connector *connector)
+{
+       mutex_lock(&connector->dev->mode_config.mutex);
+       drm_mode_connector_set_link_status_property(connector, DRM_MODE_LINK_STATUS_BAD);
+       mutex_unlock(&connector->dev->mode_config.mutex);
+}
+
 static void dm_dp_mst_register_connector(struct drm_connector *connector)
 {
        struct drm_device *dev = connector->dev;
        struct amdgpu_device *adev = dev->dev_private;
+       struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
 
        if (adev->mode_info.rfbdev)
                drm_fb_helper_add_one_connector(&adev->mode_info.rfbdev->helper, connector);
@@ -416,6 +465,8 @@ static void dm_dp_mst_register_connector(struct drm_connector *connector)
 
        drm_connector_register(connector);
 
+       if (aconnector->mst_connected)
+               dm_dp_mst_link_status_reset(connector);
 }
 
 static const struct drm_dp_mst_topology_cbs dm_mst_cbs = {