Date: Thu, 13 Jul 2006 14:09:24 +0200 From: Bruno Ducrot <ducrot@poupinou.org> To: Eric Anderson <anderson@centtech.com> Cc: Daniel Eischen <deischen@freebsd.org>, freebsd-mobile@freebsd.org Subject: Re: Dell laptops Message-ID: <20060713120924.GK17014@poupinou.org> In-Reply-To: <44B6333C.5090303@centtech.com> References: <20060711.104708.1159134898.imp@bsdimp.com> <Pine.GSO.4.64.0607111252150.24473@sea.ntplx.net> <200607111338.01412.mistry.7@osu.edu> <44B3EDA6.8050608@centtech.com> <20060713094816.GI17014@poupinou.org> <44B6333C.5090303@centtech.com>
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On Thu, Jul 13, 2006 at 06:49:16AM -0500, Eric Anderson wrote:
> >I don't know how to contact Dell in order to get that fixed.
>
> I might be able to help you get in contact with someone, or maybe get
> the right information to the right people. I don't completely
> understand everything above, so you'll have to explain to me (or to
> them) what needs fixing..
Suppose you wrote something like that under C:
void
f1(void)
{
unsigned int local0;
local0 = smi(0x96, 0);
if (local0 & FLAG_1)
do_something();
if (local0 & FLAG_2) {
/* local0 will change here */
local0 = smi(0x62, 0);
...
}
/*
*local0 could possibly be changed by the above if() statement
*/
if (local0 & FLAG_3) {
...
}
}
Is that clarify what I have in mind?
>
> >Second, there is a method called \SMI(), taking 2 arguments and
> >returning a value. This method will actually trigger a SMI handler
> >in order to perform almost all power management stuff, as for
> >example getting fan status, controlling fan speed, controlling
> >docking and so on. There is a specific kernel module under linux
> >called i8k, that can be found here :
> >http://people.debian.org/~dz/i8k/
> >Even though I think this driver could have possibly "funny" effect
> >if ACPI is enabled under Linux (it will actually share the same
> >IO with the SMI() method, and that must be serialized for obvious
> >reason), looking onto that driver we learn for example that
> >SMI(0x25, 0) will likely return the FN key status for almost
> >all Dell Laptop.
> >
> >Therefore it should be somewhat easy to write a simple ACPI
> >driver for Dell laptops, at least for FN key (if those still
> >don't work).
> >
> >ATM I don't have time for writing such support.
>
> Would this driver be akin to the asus, fujitsu, and ibm drivers that exist?
Something like that, though I don't know exactly what feature provides
those drivers.
--
Bruno Ducrot
-- Which is worse: ignorance or apathy?
-- Don't know. Don't care.
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