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linux/Documentation/hwmon/asus_rog_ryujin.rst
Aleksa Savic ed3e03790c hwmon: Add driver for ASUS ROG RYUJIN II 360 AIO cooler
This driver exposes hardware sensors of the ASUS ROG RYUJIN II 360
all-in-one CPU liquid cooler, which communicates through a proprietary
USB HID protocol. Report offsets were initially discovered in [1] by
Florian Freudiger.

Available sensors are pump, internal and external
(controller) fan speed in RPM, their duties in PWM, as well as
coolant temperature.

Attaching external fans to the controller is optional and allows them
to be controlled from the device. If not connected, the fan-related
sensors will report zeroes. The controller is a separate hardware unit
that comes bundled with the AIO and connects to it to allow fan control.

The addressable LCD screen is not supported in this
driver and should be controlled through userspace tools.

[1]: https://github.com/liquidctl/liquidctl/pull/653

Tested-by: Florian Freudiger <florian.freudiger@proton.me>
Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Link: https://lore.kernel.org/r/20240108094453.22986-1-savicaleksa83@gmail.com
[groeck: Add HID dependency]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-02-25 12:37:37 -08:00

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.. SPDX-License-Identifier: GPL-2.0-or-later
Kernel driver asus_rog_ryujin
=============================
Supported devices:
* ASUS ROG RYUJIN II 360
Author: Aleksa Savic
Description
-----------
This driver enables hardware monitoring support for the listed ASUS ROG RYUJIN
all-in-one CPU liquid coolers. Available sensors are pump, internal and external
(controller) fan speed in RPM, their duties in PWM, as well as coolant temperature.
Attaching external fans to the controller is optional and allows them to be
controlled from the device. If not connected, the fan-related sensors will
report zeroes. The controller is a separate hardware unit that comes bundled
with the AIO and connects to it to allow fan control.
The addressable LCD screen is not supported in this driver and should
be controlled through userspace tools.
Usage notes
-----------
As these are USB HIDs, the driver can be loaded automatically by the kernel and
supports hot swapping.
Sysfs entries
-------------
=========== =============================================
fan1_input Pump speed (in rpm)
fan2_input Internal fan speed (in rpm)
fan3_input External (controller) fan 1 speed (in rpm)
fan4_input External (controller) fan 2 speed (in rpm)
fan5_input External (controller) fan 3 speed (in rpm)
fan6_input External (controller) fan 4 speed (in rpm)
temp1_input Coolant temperature (in millidegrees Celsius)
pwm1 Pump duty
pwm2 Internal fan duty
pwm3 External (controller) fan duty
=========== =============================================