CS8409_I2C_QREAD
cs8409_vendor_coef_set(codec, CS8409_I2C_QREAD, i2c_reg_data);
read_data = cs8409_vendor_coef_get(codec, CS8409_I2C_QREAD);
cs8409_vendor_coef_set(codec, CS8409_I2C_QREAD, i2c_reg_data);
seq[i].value = cs8409_vendor_coef_get(codec, CS8409_I2C_QREAD) & 0xff;