__cw1200_reg_read
ret = __cw1200_reg_read(priv, addr, buf, buf_len, 0);
ret = __cw1200_reg_read(priv,
ret = __cw1200_reg_read(priv, port_addr, buf, buf_len, 0);
int i = __cw1200_reg_read(priv, addr, &tmp, sizeof(tmp), 0);
int i = __cw1200_reg_read(priv, addr, &tmp, sizeof(tmp), 0);