LOONGSON2_I2C_SR1_TXE
if ((event & LOONGSON2_I2C_SR1_TXE) && !(msg->addr & I2C_M_RD))
#define LOONGSON2_I2C_SR1_ITBUFEN_MASK (LOONGSON2_I2C_SR1_TXE | LOONGSON2_I2C_SR1_RXNE)