From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Peter Feuerer <peter@piie.net>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: Acer Aspire One fan control
Date: Fri, 13 Feb 2009 19:18:15 +0000 [thread overview]
Message-ID: <20090213191815.GB1379@srcf.ucam.org> (raw)
In-Reply-To: <cone.1234551556.57236.4642.1000@onepiie>
On Fri, Feb 13, 2009 at 07:59:16PM +0100, Peter Feuerer wrote:
> Matthew Garrett writes:
> >If
> >these io ports are also used by the firmware then you'll need to find
> >ACPI methods to call to perform the fan control.
>
> I get the temperature by calling ec_read(0x58) and can read/write the state
> of the fan by ec_write to / ec_read from 0x55. Actually I don't know if
> those embedded controller registers are used by the firmware. How can I
> find it out?
Ok, yup, that should be safe. It might be nice to implement this as an
hwmon driver, potentially tying it into the thermal layer.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2009-02-13 19:18 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-12 20:37 Acer Aspire One fan control Peter Feuerer
2009-02-12 21:03 ` Ralf Hildebrandt
2009-02-12 21:14 ` Peter Feuerer
2009-03-09 10:54 ` Maxim Levitsky
2009-02-13 10:35 ` Thomas Renninger
2009-02-13 19:34 ` Peter Feuerer
2009-02-13 13:40 ` Matthew Garrett
2009-02-13 18:59 ` Peter Feuerer
2009-02-13 19:18 ` Matthew Garrett [this message]
2009-02-13 19:45 ` Peter Feuerer
2009-02-27 18:58 ` [PATCH] acerhdf: " Peter Feuerer
[not found] ` <1235763653.24506.6.camel@localhost>
2009-02-28 18:58 ` Peter Feuerer
2009-03-01 14:38 ` Matthew Garrett
2009-03-26 22:22 ` Peter Feuerer
2009-04-01 12:44 ` Peter Feuerer
2009-04-12 20:49 ` Peter Feuerer
2009-04-04 10:51 ` Peter Feuerer
2009-03-01 15:27 ` Ed Tomlinson
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