linux-kernel - Re: [PATCH] platform/x86: ideapad-laptop: Expose conservation mode switch

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Date:   Sat, 5 Aug 2017 23:18:26 +0800
From:   Hao Wei Tee <angelsl@...4.sg>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Platform Driver <platform-driver-x86@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Darren Hart <dvhart@...radead.org>,
        Ike Panhc <ike.pan@...onical.com>
Subject: Re: [PATCH] platform/x86: ideapad-laptop: Expose conservation mode
 switch

On 30/5/2017 21:22, Andy Shevchenko wrote:
> On Sun, May 28, 2017 at 4:47 PM, Hao Wei Tee <angelsl@...elsl.xyz> wrote:
>> On 5/27/17 3:31 PM, Hao Wei Tee wrote:
>>> This exposes the battery conservation mode present on some (?) IdeaPads.
>>> The mode is set by calling ACPI method SBMC with argument 3 (on) or
>>> 5 (off). Status is reported in bit 5 of the return value of ACPI method
>>> GBMD.
>>>
>>> This patch was written based on an IdeaPad U430p. I'm not sure if the ACPI
>>> methods are the same across all IdeaPads, so it would be great if this got more
>>> testing across other models before it's merged.
>>
>> I got someone to test on an IdeaPad Y510p. It works on that too.
> 
> Do we have any other option that expose something via sysfs?

It's been 2 months, what can I do to get this patch merged, or alternatively some other
way of exposing this switch?

-- 
Hao Wei