IPC_IA_START_STREAM   79 sound/soc/intel/atom/sst-mfld-dsp.h #define IPC_IA_START_STREAM 0x30 /* Short msg with str_id */
IPC_IA_START_STREAM   54 sound/soc/intel/baytrail/sst-baytrail-ipc.c #define IPC_IA_START_STREAM	0x30