On Sun, Oct 17, 2004 at 01:50:11PM +0200, Thiemo Nordenholz wrote: > beginner's question, maybe: How do I, from a device driver point of view, > access a device attached to the "Low Pincount" (LPC) bus?
Treat it as an ISA bus but write an ACPI attachment for it. Look at src/sys/dev/fdc/fdc_acpi.c:fdc_acpi_probe() for an example. > unknown pnpinfo _HID=WEC0518 _UID=0 at handle=\_SB_.C046.C059.C140 There appears to be a Linux driver for this, which gives you something to work from. > Now, to implement an identify function in a driver for this, I need to > access data in the controller - but I don't have any information about its > memory attachments... I'd suggest looking at that driver and accessing the registers you need to identify the device sub-type in your attach function. BMS
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