LTC430X_R_GPIO
if (!i2c_reg_get(*txnp, ltc->ltc_regs, LTC430X_R_GPIO, gpiop,
if (gpio != ngpio && !i2c_reg_put(txn, ltc->ltc_regs, LTC430X_R_GPIO,
if (!i2c_reg_get(NULL, ltc->ltc_regs, LTC430X_R_GPIO, &val,