msp3400c_read
val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x7e);
rev1 = msp3400c_read(bktr, I2C_MSP3400C_DFP, 0x1e);
rev2 = msp3400c_read(bktr, I2C_MSP3400C_DFP, 0x1f);
val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x18);
val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x23);
val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x200);
val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x1b);
val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x1b);