linux-kernel - Re: [PATCH v3 1/1] platform/x86: asus-wmi: add support for vivobook fan profiles

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Date: Fri, 21 Jun 2024 11:43:10 +0200
From: Devin Bayer <dev@...bly.so>
To: Mohamed Ghanmi <mohamed.ghanmi@...com.tn>, Luke Jones <luke@...nes.dev>
Cc: Hans de Goede <hdegoede@...hat.com>, corentin.chary@...il.com,
 platform-driver-x86@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: Re: [PATCH v3 1/1] platform/x86: asus-wmi: add support for vivobook
 fan profiles

Hello Mohamed et al,

On 05/06/2024 09.43, Luke Jones wrote:
> 
> I am saying I would like to see ASUS_THROTTLE_THERMAL_POLICY_FULLSPEED removed, or placed somewhere else such as in <sysfs>/asus-nb-wmi/hwmon/hwmon3/pwm1_enable.
> 
> It certainly shouldn't be included in platform_profile and I'm not keen on seeing it in thorttle_thermal_policy either.
> 
> A lot of this reasoning is now coming from the refactor I've just done of asus-wmi and the "features" such as this one to place them under firmware_attributes class and begin deprecation of them in asus_wmi. From what I've achieved so far with it it is much *much* more suitable than this ad-hoc style of adding features I've been doing here (I'll submit this work soon, it repalces the last patch series I did).
> 
> In light of the above I'm considering the possibility of removing throttle_thermal_policy completely to wholly favour the use of platform_profile. It doesn't make all that much sense to have two different things manipulating the same thing - and as such I don't think the "full speed fan" setting fits at all with platform_profile as it is not a performance tweak.
> 
> Mohamed, I would be happy to include the Vivo support so long as:
> 1. the fullspeed setting is removed
> 2. the modes map correctly to platform_profile
> 
> I hope this makes sense. Very sorry about the previous brief response (I was recovering from surgery trauma).

I recently created my own patch to toggle this control[^1]. I thought
it was an alternative fan_boost_mode because the dev_id's were one apart. But with
more testing I've realized it also controls the GPU power and supporting the standard
platform_profile is better, so I prefer this patch.

I tested it and it works. However, it has a couple issues:

1. This dev_id isn't Vivobook specific. My Zenbook UX3404VC (2023) has this control.

2. The Zenbook only supports values 0-2 (standard, quiet and performance).
   Calling the method with 3 causes the KEYBOARD_KEY event to fire instead of
   adjusting the GPU power and fan speed.

So I would suggest to remove the fullspeed setting and rename the constants,
perhaps to ASUS_THROTTLE_THERMAL_POLICY2.

Mohamed, if you are busy I could also create a new version of this patch with
the requested fixes.

I wonder if the existing fan_boost_mode should also be considered a platform_profile?

~ Dev

[^1]: https://lore.kernel.org/platform-driver-x86/20240620082223.20178-1-dev@doubly.so/