Commit ed264e8a authored by Joaquín Ignacio Aramendía's avatar Joaquín Ignacio Aramendía Committed by Guenter Roeck
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hwmon: add OneXPlayer mini AMD sensors driver 



Sensors driver for OXP Handhelds from One-Netbook that expose fan reading
and control via hwmon sysfs.

As far as I could gather all OXP boards have the same DMI strings and
they can be told appart only by the boot cpu vendor (Intel/AMD).
Currently only AMD boards are supported since Intel have different EC
registers and values to read/write.

Fan control is provided via pwm interface in the range [0-255]. AMD
boards have [0-100] as range in the EC, the written value is scaled to
accommodate for that.

Signed-off-by: default avatarJoaquín Ignacio Aramendía <samsagax@gmail.com>
Link: https://lore.kernel.org/r/20221104140659.593608-1-samsagax@gmail.com


[groeck: Removed misleading comment about module_platform_driver()]
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent d5d896b8

Documentation/hwmon/index.rst

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@@ -160,6 +160,7 @@ Hardware Monitoring Kernel Drivers 
   nzxt-kraken2

   nzxt-smart2

   occ

   oxp-sensors

   pc87360

   pc87427

   pcf8591

Documentation/hwmon/oxp-sensors.rst

0 → 100644
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.. SPDX-License-Identifier: GPL-2.0-or-later



Kernel driver oxp-sensors

=========================



Author:

    - Joaquín Ignacio Aramendía <samsagax@gmail.com>



Description:

------------



One X Player devices from One Netbook provide fan readings and fan control

through its Embedded Controller.



Currently only supports AMD boards from the One X Player lineup. Intel boards

could be supported if we could figure out the EC registers and values to write

to since the EC layout and model is different.



Sysfs entries

-------------



The following attributes are supported:



fan1_input

  Read Only. Reads current fan RMP.



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.

MAINTAINERS

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@@ -15345,6 +15345,12 @@ S: Maintained 
F:	drivers/mtd/nand/onenand/

F:	include/linux/mtd/onenand*.h









ONEXPLAYER FAN DRIVER









M:	Joaquín Ignacio Aramendía <samsagax@gmail.com>









L:	linux-hwmon@vger.kernel.org









S:	Maintained









F:	drivers/hwmon/oxp-sensors.c

















ONION OMEGA2+ BOARD









M:	Harvey Hunt <harveyhuntnexus@gmail.com>









L:	linux-mips@vger.kernel.org
































drivers/hwmon/Kconfig



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−0






























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@@ -1616,6 +1616,17 @@ config SENSORS_NZXT_SMART2

















source "drivers/hwmon/occ/Kconfig"



















config SENSORS_OXP









	tristate "OneXPlayer EC fan control"









	depends on ACPI









	depends on X86









	help









		If you say yes here you get support for fan readings and control over









		OneXPlayer handheld devices. Only OneXPlayer mini AMD handheld variant









		boards are supported.



















		Can also be built as a module. In that case it will be called oxp-sensors.



















config SENSORS_PCF8591









	tristate "Philips PCF8591 ADC/DAC"









	depends on I2C
































drivers/hwmon/Makefile



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−0






























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@@ -167,6 +167,7 @@ obj-$(CONFIG_SENSORS_NSA320)	+= nsa320-hwmon.o







obj-$(CONFIG_SENSORS_NTC_THERMISTOR)	+= ntc_thermistor.o









obj-$(CONFIG_SENSORS_NZXT_KRAKEN2) += nzxt-kraken2.o









obj-$(CONFIG_SENSORS_NZXT_SMART2) += nzxt-smart2.o









obj-$(CONFIG_SENSORS_OXP) += oxp-sensors.o









obj-$(CONFIG_SENSORS_PC87360)	+= pc87360.o









obj-$(CONFIG_SENSORS_PC87427)	+= pc87427.o









obj-$(CONFIG_SENSORS_PCF8591)	+= pcf8591.o