In the functional diagram of the chip there's no connections between the SuperIO parts and the HMB, There's no mention of any registers in the LPC interface holding voltage/temp values and there's even the sentences: "It should be noted that there are two main interfaces used to access the components of this chip. The LPC interface is used to access the Super I/O registers and the SMBus is used to access the Hardware Monitoring registers." - http://www.smsc.com/main/tools/discontinued/47m15x.pdf page 26. So, a multi interface driver or separate drivers for the separate functions, is needed. As there's already a driver for the fans on the LPC interface, i've implemented my driver separate from the fan one. On Sun, 06 Mar 2005 15:20:20 -0500, Mark Studebaker <mds at mds.gotdns.com> wrote: > Tomas Holmqvist wrote: > > Hi everybody. > > > > I've written a driver for the Hardware Monitoring Block (HMB) of the smsc47m15x. > > That is the part of this chip that sits on the I2C bus. The other > > functions of this Super IO are controlled via ISA. The HMB is just a > > voltage/temp sensor quite similar to the lm78. > > > > There are still some small bugs to resolve, I only just found out how > > to compile it in the kernel tree. > > > > I'm using the I2C_DRIVERID_EXP0 id, but when loading it my other > > drivers are not found when using the sensors tool. > > > > Should I post the code here or keep it for my self until it works > > without obvious bugs? > > > > The driver is written with the 2.6.11rc3 kernel, whatever state of > > lm_sensors that mean. 2.9.0 I think. > > > > /Tomas > > > > Isn't the HMB also accessible via superio/ISA, but in a separate "device" than the fan block? > If so ISA is much preferred over a split ISA/i2c driver. > >
