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

[Martin Lorenz]

On Mon, Sep 11, 2006 at 01:05:07PM -0300, Henrique de Moraes Holschuh wrote:
> On Mon, 28 Aug 2006, Henrique de Moraes Holschuh wrote:
> > This information will be used to improve ibm-acpi to do the right thing, and
> > return all available sensors in newer Thinkpads (which support up to 16
> > sensors, as we know from ThinkWiki, although we have had no reports of
> > models with more than 11 sensors so far).
> 
> Here's what has been found by this study:
> 
> Thinkpads with the new-style EC (those which, after being updated to the
> latest BIOS and EC firmware, have the EC firmware revision DMI string)
> support the 16 sensors sanely: either the sensors are supported, and those
> that do not exist read 0x80, or the entire C0-C7 range is always zero.
> 
> Older ThinkPads, with older style ECs, can have extraneous information in
> registers C0-C7 (eg. T20).
> 
> I have written a patch for ibm_acpi, and I am testing it.  I will post it
> here and to the wiki for some beta testing later on.  The patch *requires*
> a DMI patch that is included in the tp_smapi tarball, and already accepted
> for -mm kernels.

is tp_smapi in any kernel tree?

what ist it really REQUIRED for?

gruss
  mlo
--
Dipl.-Ing. Martin Lorenz

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