[ltp] Request: EC dump information for A3x/X3x/T3x Thinkpads

[Henrique de Moraes Holschuh]

On Mon, 28 Aug 2006, Timothy Murphy wrote:
> I was very surprised to find that this worked on my T20,

> EC 0xc0: *7e *2b *cc *9a  00  00  00  00  00  00  00  00  00  00  00  00

Uh oh...  there goes the chance of easily expanding ibm-acpi, and also my
praise for IBM's supposedly good handling of the EC register space
allocation.  Heh.

There is no chance that set of readings are thermal sensors, obviously :p

Well, this was a *very* important datapoint, thanks for the email and head's
up.   It looks like the only way is for a DMI match for the ibm-acpi
extension for "thermal" (we could easily detect "not enough 0x80" but that
is not future-proof), plus the usual "manual override" module parameter.

Probably the same DMI match used by thinkpad_ec to locate a working
latest-version Thinkpad EC firmware will do.  So far, all models reported to
behave in the C0-C7 range are an OK match to the firmware DMI string.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh