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.. SPDX-License-Identifier: GPL-2.0-or-later
Kernel driver asus_ec_sensors
=================================
Supported boards:
* PRIME X470-PRO
* PRIME X570-PRO
* Pro WS X570-ACE
* ProArt X570-CREATOR WIFI
* ROG CROSSHAIR VIII DARK HERO
* ROG CROSSHAIR VIII HERO (WI-FI)
* ROG CROSSHAIR VIII FORMULA
* ROG CROSSHAIR VIII HERO
* ROG CROSSHAIR VIII IMPACT
* ROG STRIX B550-E GAMING
* ROG STRIX B550-I GAMING
* ROG STRIX X570-E GAMING
* ROG STRIX X570-E GAMING WIFI II
* ROG STRIX X570-F GAMING
* ROG STRIX X570-I GAMING
Authors:
- Eugene Shalygin <eugene.shalygin@gmail.com>
Description:
------------
ASUS mainboards publish hardware monitoring information via Super I/O
chip and the ACPI embedded controller (EC) registers. Some of the sensors
are only available via the EC.
The driver is aware of and reads the following sensors:
1. Chipset (PCH) temperature
2. CPU package temperature
3. Motherboard temperature
4. Readings from the T_Sensor header
5. VRM temperature
6. CPU_Opt fan RPM
7. VRM heatsink fan RPM
8. Chipset fan RPM
9. Readings from the "Water flow meter" header (RPM)
10. Readings from the "Water In" and "Water Out" temperature headers
11. CPU current
12. CPU core voltage
Sensor values are read from EC registers, and to avoid race with the board
firmware the driver acquires ACPI mutex, the one used by the WMI when its
methods access the EC.
Module Parameters
-----------------
* mutex_path: string
The driver holds path to the ACPI mutex for each board (actually,
the path is mostly identical for them). If ASUS changes this path
in a future BIOS update, this parameter can be used to override
the stored in the driver value until it gets updated.
A special string ":GLOBAL_LOCK" can be passed to use the ACPI
global lock instead of a dedicated mutex.
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