GPU access with I2C bus

[Der_Unwissende]

Zitat von Razor:

I want to access stuff like clocks any clocks about gpu,temperature,bus speed(agp or pcie) fan status and fan set

Well, direct HW-access does won't be usefull to access these clocks. Although you might get these values by communicating over I²C, most SDKs will offer an interface for accessing them. The advantage of such in interface is at least, that you don't need any knowledge about the hw at all. Maybe in your case the SKD offers a function returning some of these values?
At first you should check the documentation of the SDK (what are the offered functions and their use?)