BP_POLL_TIME
schedule_delayed_work(&rt5640->bp_work, msecs_to_jiffies(BP_POLL_TIME));
if (rt5640->poll_count < (JACK_UNPLUG_TIME / BP_POLL_TIME)) {
msecs_to_jiffies(BP_POLL_TIME));
schedule_delayed_work(&rt5640->bp_work, msecs_to_jiffies(BP_POLL_TIME));
schedule_delayed_work(&rt5651->bp_work, msecs_to_jiffies(BP_POLL_TIME));
if (rt5651->poll_count < (JACK_UNPLUG_TIME / BP_POLL_TIME)) {
msecs_to_jiffies(BP_POLL_TIME));
schedule_delayed_work(&rt5651->bp_work, msecs_to_jiffies(BP_POLL_TIME));