EXTCON_PROP_CHG_MIN
case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
ret = test_bit(prop - EXTCON_PROP_CHG_MIN, cable->chg_bits);
case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
*prop_val = cable->chg_propval[prop - EXTCON_PROP_CHG_MIN];
case EXTCON_PROP_CHG_MIN ... EXTCON_PROP_CHG_MAX:
cable->chg_propval[prop - EXTCON_PROP_CHG_MIN] = prop_val;
__set_bit(prop - EXTCON_PROP_CHG_MIN, cable->chg_bits);
#define EXTCON_PROP_CHG_CNT (EXTCON_PROP_CHG_MAX - EXTCON_PROP_CHG_MIN + 1)