thc_i2c_subip_pio_read
ret = thc_i2c_subip_pio_read(dev, THC_I2C_IC_ENABLE_OFFSET, &read_size, &val);
ret = thc_i2c_subip_pio_read(dev, THC_I2C_IC_TAR_OFFSET, &read_size, &val);
ret = thc_i2c_subip_pio_read(dev, THC_I2C_IC_ENABLE_OFFSET, &read_size, &val);
ret = thc_i2c_subip_pio_read(dev, i2c_subip_regs[i],