linux-kernel - [PATCH v2 0/3] Add extreme platform profile

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Message-ID: <20251106212121.447030-1-derekjohn.clark@gmail.com>
Date: Thu,  6 Nov 2025 13:21:18 -0800
From: "Derek J. Clark" <derekjohn.clark@...il.com>
To: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Armin Wolf <W_Armin@....de>,
	Len Brown <lenb@...nel.org>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Jonathan Corbet <corbet@....net>
Cc: Mario Limonciello <superm1@...nel.org>,
	Zhixin Zhang <zhangzx36@...ovo.com>,
	Mia Shao <shaohz1@...ovo.com>,
	Mark Pearson <mpearson-lenovo@...ebb.ca>,
	"Pierre-Loup A . Griffais" <pgriffais@...vesoftware.com>,
	Kurt Borja <kuurtb@...il.com>,
	"Derek J . Clark" <derekjohn.clark@...il.com>,
	platform-driver-x86@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: [PATCH v2 0/3] Add extreme platform profile

This series adds a new "extreme" platform profile mode and uses it for
the lenovo-wmi-gamezone driver. It also adds the Lenovo Legion Go 2
to the extreme mode quirks table.

On some Lenovo Legion devices there is a thermal mode called extreme
that corresponds to setting ppt/spl vlaues to the maximum achievable by
the cooling solution. This correlates strongly with an overall power draw
that exceeds the DC power draw capability of the internal battery. This
mode being mapped to performance when extreme mode is detected as
supported, with the actual performance mode being set to
balanced-performance, has led to some misinformation being promulgated
that performance is always a bad setting in Linux for these devices.
There is also some confusion that the mode labeled performance in
userspace, which corresponds to a red LED in Windows, shows as purple
when set using the hardware extreme mode.

I'll also note that as the hard TDP limits are refreshed when on AC or DC
by the ACPI notifier of lenovo-wmi-other method driver, no special handling
of the battery is needed for safety limiting extreme mode.

Signed-off-by: Derek J. Clark <derekjohn.clark@...il.com>

---
v2:
 - Drop patch 3/3, keep extreme mode quirks table
 - Add Legion Go 2 to quirks table
 - Fix nits from Mario
v1:
https://lore.kernel.org/platform-driver-x86/20251026081240.997038-1-derekjohn.clark@gmail.com/

Derek J. Clark (3):
  acpi: platform_profile - Add Extreme profile option
  platform/x86: lenovo-wmi-gamezone Use Extreme vice
    balanced-performance
  platform/x86: wmi-gamezone: Add Legion Go 2 Quirks

 .../ABI/testing/sysfs-class-platform-profile  |  2 ++
 .../wmi/devices/lenovo-wmi-gamezone.rst       | 29 +++++++--------
 drivers/acpi/platform_profile.c               |  1 +
 drivers/platform/x86/lenovo/wmi-gamezone.c    | 35 +++++++++++--------
 include/linux/platform_profile.h              |  1 +
 5 files changed, 38 insertions(+), 30 deletions(-)

-- 
2.51.1