#include <nvapi.h>

Data Fields
NvU32	version
NvU32	displayMask
NvU8	bIsDDCPort
NvU8	i2cDevAddress
NvU8 *	pbI2cRegAddress
NvU32	regAddrSize
NvU8 *	pbData
NvU32	cbSize
NvU32	i2cSpeed
NV_I2C_SPEED	i2cSpeedKhz
NvU8	portId
NvU32	bIsPortIdSet

Detailed Description

Used in NvAPI_I2CRead() and NvAPI_I2CWrite()

Field Documentation

NvU8 NV_I2C_INFO_V3::bIsDDCPort

This flag indicates either the DDC port (TRUE) or the communication port (FALSE) of the concerned display.

NvU32 NV_I2C_INFO_V3::bIsPortIdSet

set this flag on if and only if portid value is set

NvU32 NV_I2C_INFO_V3::cbSize

The size of the data buffer, pbData, to be read or written.

NvU32 NV_I2C_INFO_V3::displayMask

The Display Mask of the concerned display.

NvU8 NV_I2C_INFO_V3::i2cDevAddress

The address of the I2C slave. The address should be shifted left by one. For example, the I2C address 0x50, often used for reading EDIDs, would be stored here as 0xA0. This matches the position within the byte sent by the master, as the last bit is reserved to specify the read or write direction.

NvU32 NV_I2C_INFO_V3::i2cSpeed

Deprecated, Must be set to NVAPI_I2C_SPEED_DEPRECATED.

NV_I2C_SPEED NV_I2C_INFO_V3::i2cSpeedKhz

The target speed of the transaction in (kHz) (Chosen from the enum NV_I2C_SPEED).

NvU8* NV_I2C_INFO_V3::pbData

The buffer of data which is to be read or written (depending on the command).

NvU8* NV_I2C_INFO_V3::pbI2cRegAddress

The I2C target register address. May be NULL, which indicates no register address should be sent.

NvU8 NV_I2C_INFO_V3::portId

The portid on which device is connected (remember to set bIsPortIdSet if this value is set) Optional for pre-Kepler

NvU32 NV_I2C_INFO_V3::regAddrSize

The size in bytes of target register address. If pbI2cRegAddress is NULL, this field must be 0.