From: Corentin Chary <corentin.chary@gmail.com>
To: alan-jenkins@tuffmail.co.uk
Cc: Grigori Goronzy <greg@chown.ath.cx>,
linux-acpi@vger.kernel.org, Len Brown <len.brown@intel.com>
Subject: Re: [PATCH 09/19] eeepc-laptop: support for super hybrid engine (SHE)
Date: Sun, 24 May 2009 22:24:55 +0200 [thread overview]
Message-ID: <71cd59b00905241324k7b75e3fai4a24e00d4934fde3@mail.gmail.com> (raw)
In-Reply-To: <9b2b86520905240228y5cf7111dsa6d5d34e03360bd9@mail.gmail.com>
On Sun, May 24, 2009 at 11:28 AM, Alan Jenkins
<sourcejedi.lkml@googlemail.com> wrote:
> On 5/16/09, Len Brown <lenb@kernel.org> wrote:
>> From: Grigori Goronzy <greg@chown.ath.cx>
>>
>> The older eeepc-acpi driver allowed to control the SHE performance
>> preset through a ACPI function for just this purpose. SHE underclocks
>> and undervolts the FSB and undervolts the CPU (at preset 2,
>> "powersave"), or slightly overclocks the CPU (at preset 0,
>> "performance"). Preset 1 is the default setting with default clocks and
>> voltage.
>>
>> The new eeepc-laptop driver doesn't support it anymore.
>> The attached patch adds support for it to eeepc-laptop. It's very
>> straight-forward and almost trivial.
>>
>> Signed-off-by: Grigori Goronzy <greg@chown.ath.cx>
>> Signed-off-by: Corentin Chary <corentincj@iksaif.net>
>> Signed-off-by: Len Brown <len.brown@intel.com>
>> ---
>
> Hi, out of curiosity I tried this on my EeePC 701. I upgraded the
> BIOS to the latest version available a few months ago.
>
> I find that the file is present and can successfully be read from.
> The file returns the value "513". If I write "1" to it, nothing
> happens. If I write "0" to it, the speakers start hissing and the
> file then returns the value "512". Writing "1" again gets it back to
> normal. There is no apparent effect on performance.
After checking multiple dsdt :
x >> 8 = configurations possibles
x & 0xFF = current config
512 : 2 configurations possible, configuration 0
513: 2 configurations possible, configuration 1
For me it's a bug in the BIOS.
Anyway the output of the cpufv file is not very clear.
I'll fix that and I'll test what it does on my 701 with an old bios.
--
Corentin Chary
http://xf.iksaif.net - http://uffs.org
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next prev parent reply other threads:[~2009-05-24 20:24 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-16 6:01 ACPI & driver patches for 2.6.30-rc5 Len Brown
2009-05-16 6:01 ` [PATCH 01/19] ACPI video: dmi check for broken _BQC on Acer Aspire 5720 Len Brown
2009-05-16 6:01 ` [PATCH 02/19] ACPICA: use acpi.* modparam namespace Len Brown
2009-05-16 6:02 ` [PATCH 03/19] ACPI: video: DMI workaround another broken Acer BIOS enabling display brightness Len Brown
2009-05-16 6:02 ` [PATCH 04/19] ACPI: power: update error message Len Brown
2009-05-16 6:02 ` [PATCH 05/19] ACPI: suspend: don't let device _PS3 failure prevent suspend Len Brown
2009-05-16 6:02 ` [PATCH 06/19] eeepc-laptop: fix wlan rfkill state change during init Len Brown
2009-05-16 6:02 ` [PATCH 07/19] eeepc-laptop: report brightness control events via the input layer Len Brown
2009-05-16 6:02 ` [PATCH 08/19] eeepc-laptop: Work around rfkill firmware bug Len Brown
2009-05-16 6:02 ` [PATCH 09/19] eeepc-laptop: support for super hybrid engine (SHE) Len Brown
2009-05-24 9:28 ` Alan Jenkins
2009-05-24 17:23 ` Corentin Chary
[not found] ` <4A198401.3040003@tuffmail.co.uk>
2009-05-25 8:12 ` Corentin Chary
2009-05-25 9:43 ` Alan Jenkins
2009-05-25 9:59 ` Corentin Chary
2009-05-25 10:07 ` Alan Jenkins
2009-05-25 11:19 ` Corentin Chary
2009-05-25 11:51 ` Alan Jenkins
2009-05-26 10:12 ` Corentin Chary
2009-05-26 10:15 ` Alan Jenkins
2009-05-26 17:29 ` Francesco Lattanzio
2009-05-26 17:43 ` Alan Jenkins
2009-05-26 18:05 ` Corentin Chary
2009-05-24 20:24 ` Corentin Chary [this message]
2009-05-16 6:02 ` [PATCH 10/19] asus-laptop: fix input keycode Len Brown
2009-05-16 6:02 ` [PATCH 11/19] eeepc-laptop: unregister_rfkill_notifier on failure Len Brown
2009-05-16 6:02 ` [PATCH 12/19] thermal: fix off-by-1 error in trip point trigger condition Len Brown
2009-05-16 6:02 ` [PATCH 13/19] ACPI: resume: re-enable SCI-enable workaround Len Brown
2009-05-16 6:02 ` [PATCH 14/19] ACPI: suspend: restore BM_RLD on resume Len Brown
2009-05-16 6:02 ` [PATCH 15/19] ACPI, i915: build fix Len Brown
2009-05-18 2:49 ` yakui_zhao
2009-05-16 6:02 ` [PATCH 16/19] ACPI processor: introduce module parameter processor.ignore_tpc Len Brown
2009-05-16 6:02 ` [PATCH 17/19] ACPI processor: reset the throttling state once it's invalid Len Brown
2009-05-16 6:02 ` [PATCH 18/19] ACPI: idle: fix init-time TSC check regression Len Brown
2009-05-16 6:02 ` [PATCH 19/19] ACPI: Idle C-states disabled by max_cstate should not disable the TSC Len Brown
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