linux-kernel - Re: [PATCH 0/1] platform/surface: platform

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Date: Sat, 9 Mar 2024 01:58:47 +0100
From: Maximilian Luz <luzmaximilian@...il.com>
To: Ivor Wanders <ivor@...nders.net>, Hans de Goede <hdegoede@...hat.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/1] platform/surface: platform_profile: add fan profile
 switching

On 3/2/24 18:01, Ivor Wanders wrote:
> This patch adds functionality that switches the fan profile when the
> platform profile is switched on the Microsoft Surface Pro 9.
> 
> Previously, the fan profile was not changed and that results in poor
> thermal performance. This makes the behaviour and functionality identical
> to what the Windows drivers do.
> 
> A plot of the different responses to system load, as well as recordings
> from the SSAM bus can be found at [1]. Based on discussions with
> Maximilian Luz there this patch proposes the following changes:
> 
> In surface_aggregator_registry:
> - Rename ssam_node_tmp_pprof to ssam_node_tmp_perf_profile for clarity.
> - Introduce ssam_node_tmp_perf_profile_with_fan that has the has_fan
>    boolean property set.
> - Use the new ssam_node_tmp_perf_profile_with_fan for the Surface Pro 9.
> 
> In the platform profile module:
> - Rename ssam_tmp_profile_device to ssam_platform_profile_device to make it
>    clear it handles more than just the TMP subsystem.
> - Rename the enum conversion method to make distinction between TMP and FAN
>    clear.
> - Add enum and set function & request for the fan profile.
> - Ensure that if the module's has_fan boolean is true, the fan profile is
>    switched whenever the platform profile changes.
> 
> 
> [1]: https://github.com/linux-surface/kernel/pull/145
> 
> Ivor Wanders (1):
>    platform/surface: platform_profile: add fan profile switching
> 
>   .../surface/surface_aggregator_registry.c     | 36 +++++---
>   .../surface/surface_platform_profile.c        | 86 ++++++++++++++++---
>   2 files changed, 99 insertions(+), 23 deletions(-)
> 

Looks good to me.

Reviewed-by: Maximilian Luz <luzmaximilian@...il.com>