On Sun, Apr 2, 2017 at 10:43 PM, Iru Cai <[email protected]> wrote:
> Hello, > > I'm trying to write some ACPI code to support an EC. I don't know if I > need to write an smihandler.c for the boards. > > I saw some mainboard code. Older boards such as lenovo/x200 have no > smihandler.c, but newer boards such as lenovo/x220 have. Also, I don't know > much about things like GPE, SCI, ..., even after I look at the ACPI > specification. > > So can some one sort out what happens when there is a event (e.g. Lid > open/close), and what the EC and ACPI OS should do. What needs to be added > in the mainboard code? > > A few years ago I tried to describe how this works for a presentation at linux.conf.au, you may find slides 35-44 of this slide deck helpful: https://docs.google.com/presentation/d/1Cyz2gyyxg7hZBeCp_LSDGbEhsqy6OqsJTBLprXSzOKQ/pub?slide=id.g79793b0d_132 -duncan
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