> I have determined the following formula specific to the SGI O2 to read the > RTC registers: > > readb(pdata->regs + RTC_<REGISTER> * 0x100); > > is equivalent to > > readb(pdata->regs.time.<REGISTER>); > > I'll assume writeb() changes are the same. The question is, how do I wire > in the 0x100 padding value in such a way that I keep the IP32-specific bits > out of generic code? Ralf mentioned using some field in platform_data, but > I haven't quite learned the platform stuff (this is my first real attempt at > a kernle driver). Have a look at i2c-ocores.c: Basically you use platform_data to specify register spacing on the bus. Manuel
