SNDRV_SEQ_EVENT_SENSING
ev.type = SNDRV_SEQ_EVENT_SENSING;
case SNDRV_SEQ_EVENT_SENSING:
{SNDRV_SEQ_EVENT_SENSING, 0, NULL, NULL}, /* 0xfe */
{ SNDRV_SEQ_EVENT_SENSING, UMP_SYSTEM_STATUS_ACTIVE_SENSING,
{SNDRV_SEQ_EVENT_SENSING, NULL}, /* 0xfe */