WCD_MBHC_EVENT_PA_HPHR
(test_bit(WCD_MBHC_EVENT_PA_HPHR, &mbhc->event_state)))
clear_bit(WCD_MBHC_EVENT_PA_HPHR, &mbhc->event_state);
set_bit(WCD_MBHC_EVENT_PA_HPHR, &mbhc->event_state);