F_I2C_FAIL
ret = regmap_field_read(i2c->fields[F_I2C_FAIL], &val);
[F_I2C_FAIL] = MST_REG_FIELD(RTL9300_I2C_MST_CTRL1, 1, 1),
[F_I2C_FAIL] = MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 1, 1),
[F_I2C_FAIL] = MST_REG_FIELD(RTL9607_I2C_IND_CMD, 3, 3),