i2c_ctrl_register
ret = i2c_ctrl_register(reg, &i2csim.sim_hdls[i]);
ret = i2c_ctrl_register(reg, &ismt->ismt_hdl);
ret = i2c_ctrl_register(reg, &pch->ps_hdl);
extern i2c_ctrl_reg_error_t i2c_ctrl_register(const i2c_ctrl_register_t *,