.. SPDX-License-Identifier: GPL-2.0-or-later

Kernel driver oxp-sensors
=========================

Authors:
    - Derek John Clark <derekjohn.clark@gmail.com>
    - Joaquín Ignacio Aramendía <samsagax@gmail.com>

Description:
------------

Handheld devices from OneNetbook, AOKZOE, AYANEO, And OrangePi provide fan
readings and fan control through their embedded controllers.

Currently supports OneXPlayer devices, AOKZOE, AYANEO, and OrangePi
handheld devices. AYANEO devices preceding the AIR and OneXPlayer devices
preceding the Mini A07 are not supportable as the EC model is different
and do not have manual control capabilities.

Some OneXPlayer and AOKZOE models have a toggle for changing the behaviour
of the "Turbo/Silent" button of the device. It will change the key event
that it triggers with a flip of the `tt_toggle` attribute. See below for
boards that support this function.

Supported devices
-----------------

Currently the driver supports the following handhelds:

 - AOKZOE A1
 - AOKZOE A1 PRO
 - AYANEO 2
 - AYANEO 2S
 - AYANEO AIR
 - AYANEO AIR 1S
 - AYANEO AIR Plus (Mendocino)
 - AYANEO AIR Pro
 - AYANEO Flip DS
 - AYANEO Flip KB
 - AYANEO Geek
 - AYANEO Geek 1S
 - AYANEO KUN
 - OneXPlayer 2
 - OneXPlayer 2 Pro
 - OneXPlayer AMD
 - OneXPlayer mini AMD
 - OneXPlayer mini AMD PRO
 - OneXPlayer OneXFly
 - OneXPlayer X1 A
 - OneXPlayer X1 i
 - OneXPlayer X1 mini
 - OrangePi NEO-01

"Turbo/Silent" button behaviour toggle is only supported on:
 - AOK ZOE A1
 - AOK ZOE A1 PRO
 - OneXPlayer 2
 - OneXPlayer 2 Pro
 - OneXPlayer mini AMD (only with updated alpha BIOS)
 - OneXPlayer mini AMD PRO
 - OneXPlayer OneXFly
 - OneXPlayer X1 A
 - OneXPlayer X1 i
 - OneXPlayer X1 mini

Sysfs entries
-------------

The following attributes are supported:

fan1_input
  Read Only. Reads current fan RPM.

pwm1_enable
  Read Write. Enable manual fan control. Write "1" to set to manual, write "0"
  to let the EC control de fan speed. Read this attribute to see current status.

pwm1
  Read Write. Read this attribute to see current duty cycle in the range [0-255].
  When pwm1_enable is set to "1" (manual) write any value in the range [0-255]
  to set fan speed.

tt_toggle
  Read Write. Read this attribute to check the status of the turbo/silent
  button behaviour function. Write "1" to activate the switch and "0" to
  deactivate it. The specific keycodes and behaviour is specific to the device
  both with this function on and off. This attribute is attached to the platform
  driver and not to the hwmon driver (/sys/devices/platform/oxp-platform/tt_toggle)