DP_AUX_I2C_REPLY_ACK
msg->reply = DP_AUX_I2C_REPLY_ACK;
dpmsg->reply = DP_AUX_I2C_REPLY_ACK;
case DP_AUX_I2C_REPLY_ACK:
aux_data_for_write |= DP_AUX_I2C_REPLY_ACK << 24;