EFI_I2C_DEVICE Struct Reference


Data Fields

CONST EFI_GUIDDeviceGuid
UINT32 DeviceIndex
UINT32 HardwareRevision
UINT32 I2cBusConfiguration
UINT32 SlaveAddressCount
CONST UINT32SlaveAddressArray

Detailed Description

I2C device description

The EFI_I2C_ENUMERATE_PROTOCOL uses the EFI_I2C_DEVICE to describe the platform specific details associated with an I2C device. This description is passed to the I2C bus driver during enumeration where it is made available to the third party I2C device driver via the EFI_I2C_IO_PROTOCOL.


Field Documentation

Unique value assigned by the silicon manufacture or the third party I2C driver writer for the I2C part. This value logically combines both the manufacture name and the I2C part number into a single value specified as a GUID.

Unique ID of the I2C part within the system

Hardware revision - ACPI _HRV value. See the Advanced Configuration and Power Interface Specification, Revision 5.0 for the field format and the Plug and play support for I2C web-page for restriction on values.

http://www.acpi.info/spec.htm http://msdn.microsoft.com/en-us/library/windows/hardware/jj131711(v=vs.85).aspx

I2C bus configuration for the I2C device

Pointer to the array of slave addresses for the I2C device.

Number of slave addresses for the I2C device.


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