linux-kernel - Re: [PATCH v2 10/11] platform/x86: asus-wmi: Switch fan boost mode

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Date:   Fri, 12 Apr 2019 16:03:17 +0800
From:   Daniel Drake <drake@...lessm.com>
To:     Yurii Pavlovskyi <yurii.pavlovskyi@...il.com>
Cc:     Corentin Chary <corentin.chary@...il.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        acpi4asus-user <acpi4asus-user@...ts.sourceforge.net>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        linux-api@...r.kernel.org,
        Endless Linux Upstreaming Team <linux@...lessm.com>
Subject: Re: [PATCH v2 10/11] platform/x86: asus-wmi: Switch fan boost mode

On Thu, Apr 11, 2019 at 1:47 PM Yurii Pavlovskyi
<yurii.pavlovskyi@...il.com> wrote:
> * 0x00 - is normal,
> * 0x01 - is obviously turbo by the amount of noise, might be useful to
> avoid CPU frequency throttling on high load,
> * 0x02 - the meaning is unknown at the time as modes are not named
> in the vendor documentation, but it does look like a quiet mode as CPU
> temperature does increase about 10 degrees on maximum load.

I'm curious which vendor documentation you're working with here.

>From the spec,
0 = normal
1 = overboost
2 = silent

Also you can use DSTS on the 0x00110018 device to check the exact
capabilities supported, which you should use to refine which modes can
be cycled through.
Bit 0 = overboost supported
Bit 1 = silent supported

Thanks
Daniel