retu_read
state = !(retu_read(rdev, RETU_REG_STATUS) & RETU_STATUS_PWRONX);
EXPORT_SYMBOL_GPL(retu_read);
ret = retu_read(rdev, RETU_REG_ASICR);
w = retu_read(rdev, TAHVO_REG_USBR);
tu->vbus_state = retu_read(rdev, TAHVO_REG_IDSR) & TAHVO_STAT_VBUS;
reg = retu_read(rdev, TAHVO_REG_IDSR);
int retu_read(struct retu_dev *, u8);