···4646 and write_block_data commands4747 I2C_FUNC_SMBUS_I2C_BLOCK Handles the SMBus read_i2c_block_data4848 and write_i2c_block_data commands4949- I2C_FUNC_SMBUS_EMUL Handles all SMBus commands than can be4949+ I2C_FUNC_SMBUS_EMUL Handles all SMBus commands that can be5050 emulated by a real I2C adapter (using5151 the transparent emulation layer)5252