PCA963X_MODE1
return i2c_smbus_write_byte_data(client, PCA963X_MODE1,
reg = i2c_smbus_read_byte_data(chip->client, PCA963X_MODE1);
i2c_smbus_write_byte_data(chip->client, PCA963X_MODE1, reg);
reg = i2c_smbus_read_byte_data(chip->client, PCA963X_MODE1);
i2c_smbus_write_byte_data(chip->client, PCA963X_MODE1, reg);
i2c_smbus_write_byte_data(client, PCA963X_MODE1, BIT(4));