linux-kernel - Re: [PATCH 08/15] samsung-laptop: add battery life extender support

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Message-ID: <CAHR064jWCgy3HwiwJkTRU3pTwz30wUasv33M0wEAwF_==T7+VA@mail.gmail.com>
Date:	Wed, 23 Nov 2011 07:28:31 +0100
From:	Corentin Chary <corentin.chary@...il.com>
To:	Greg KH <gregkh@...e.de>
Cc:	platform-driver-x86@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>,
	Matthew Garrett <mjg@...hat.com>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 08/15] samsung-laptop: add battery life extender support

On Tue, Nov 22, 2011 at 11:21 PM, Greg KH <gregkh@...e.de> wrote:
> On Tue, Nov 22, 2011 at 11:02:39PM +0100, Corentin Chary wrote:
>> Signed-off-by: Corentin Chary <corentincj@...aif.net>
>> ---
>>  .../ABI/testing/sysfs-driver-samsung-laptop        |   10 +++
>>  drivers/platform/x86/samsung-laptop.c              |   82 ++++++++++++++++++++
>>  2 files changed, 92 insertions(+), 0 deletions(-)
>>
>> diff --git a/Documentation/ABI/testing/sysfs-driver-samsung-laptop b/Documentation/ABI/testing/sysfs-driver-samsung-laptop
>> index 0a81023..a6a56e1 100644
>> --- a/Documentation/ABI/testing/sysfs-driver-samsung-laptop
>> +++ b/Documentation/ABI/testing/sysfs-driver-samsung-laptop
>> @@ -17,3 +17,13 @@ Description:       Some Samsung laptops have different "performance levels"
>>               Specifically, not all support the "overclock" option,
>>               and it's still unknown if this value even changes
>>               anything, other than making the user feel a bit better.
>> +
>> +What:                /sys/devices/platform/samsung/battery_life_extender
>> +Date:                December 1, 2011
>> +KernelVersion:       3.3
>> +Contact:     Corentin Chary <corentin.chary@...il.com>
>> +Description: Max battery charge level can be modified, battery cycle
>> +             life can be extended by reducing the max battery charge
>> +             level.
>> +             0 means normal battery mode (100% charge)
>> +             1 means battery life extender mode (80% charge)
>
> Really?  Huh, learn something new every day, that's rally cool, nice
> job.

Maybe it's only marketing bullshit... but the option is present both
in the BIOS and on windows, so it looks like a real feature.


-- 
Corentin Chary
http://xf.iksaif.net
--
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