On Sat, Aug 07, 2010 at 04:14:54PM +0530, Trilok Soni wrote:

quoted

+
+/*
+ * Driver communicates over i2c to nuvoTon WPCE775x Embedded Controller,
+ * which has touchpad attached through PS/2 interface.
+ */

Why this driver is not developed through MFD architecture then? nuvoTon chip
looks like multi-function chip, isn't it?

It is, in the sense that it does multiple things.  But, for this
particular device, it makes the keyboard available as an i2c device.
I don't see any particular reason to tie that to other functionality
that the chip provides.

David