ipc_trigger 162 sound/soc/sof/topology.c ret = ipc_trigger(swidget, SOF_IPC_STREAM_TRIG_START); ipc_trigger 170 sound/soc/sof/topology.c ret = ipc_trigger(swidget, SOF_IPC_STREAM_TRIG_STOP); ipc_trigger 177 sound/soc/sof/topology.c ret = ipc_trigger(swidget, SOF_IPC_STREAM_PCM_FREE);