continue;
/*
- * core_link_read_dpcd() will invoke dm_helpers_dp_read_dpcd(),
- * which needs to read dpcd info with the help of aconnector.
- * If aconnector (dc->links[i]->prev) is NULL, then dpcd status
- * cannot be read.
+ * If any of the displays are lit up turn them off.
+ * The reason is that some MST hubs cannot be turned off
+ * completely until we tell them to do so.
+ * If not turned off, then displays connected to MST hub
+ * won't light up.
*/
- if (dc->links[i]->priv) {
- /* if any of the displays are lit up turn them off */
- status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
- &dpcd_power_state, sizeof(dpcd_power_state));
- if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
- /* blank dp stream before power off receiver*/
- if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
- unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc);
-
- for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
- if (fe == dc->res_pool->stream_enc[j]->id) {
- dc->res_pool->stream_enc[j]->funcs->dp_blank(
- dc->res_pool->stream_enc[j]);
- break;
- }
+ status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
+ &dpcd_power_state, sizeof(dpcd_power_state));
+ if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
+ /* blank dp stream before power off receiver*/
+ if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
+ unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc);
+
+ for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
+ if (fe == dc->res_pool->stream_enc[j]->id) {
+ dc->res_pool->stream_enc[j]->funcs->dp_blank(
+ dc->res_pool->stream_enc[j]);
+ break;
}
}
- dp_receiver_power_ctrl(dc->links[i], false);
}
+ dp_receiver_power_ctrl(dc->links[i], false);
}
}
}