linux-stable.git/Documentation/hwmon, branch linux-6.2.y

hwmon: (ftsteutates) Fix scaling of measurements

2023-03-10T08:28:27+00:00

[ Upstream commit ca8fd8c16a8b77dfcf7f6ce52d2c863220693a78 ]

A user complained that the ftsteutates driver was displaying
bogus values since its introduction. This happens because the
sensor measurements need to be scaled in order to produce
meaningful results:
- the fan speed needs to be multiplied by 60 since its in RPS
- the temperature is in degrees celsius and needs an offset of 64
- the voltage is in 1/256 of 3.3V

The offical datasheet says the voltage needs to be divided by 256,
but this is likely an off-by-one-error, since even the BIOS
devides by 255 (otherwise 3.3V could not be measured).

The voltage channels additionally need a board-specific multiplier,
however this can be done by the driver since its board-specific.

The reason the missing scaling of measurements is the way Fujitsu
used this driver when it was still out-of-tree. Back then, all
scaling was done in userspace by libsensors, even the generic one.

Tested on a Fujitsu DS3401-B1.

Fixes: 08426eda58e0 ("hwmon: Add driver for FTS BMC chip "Teutates"")
Signed-off-by: Armin Wolf 
Link: https://lore.kernel.org/r/20221224041855.83981-2-W_Armin@gmx.de
Signed-off-by: Guenter Roeck 
Signed-off-by: Sasha Levin

hwmon: (aquacomputer_d5next) Add support for Quadro flow sensor pulses

2022-12-05T00:45:03+00:00

Add support for reading and writing flow sensor pulses value on
the Aquacomputer Quadro. Implemented by Leonard Anderweit [1].

[1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/45

Originally-from: Leonard Anderweit 
Signed-off-by: Aleksa Savic 
Link: https://lore.kernel.org/r/20221126071313.34356-1-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck

hwmon: (oxp-sensors) Add AOK ZOE and Mini PRO

2022-12-05T00:45:03+00:00

Add support for the AOK ZOE A1 and OXP Mini PRO handheld devices.
DMI strings are added to this driver since the same EC layout is used and
has similar specs as the OXP mini AMD.

The added devices are:
- OneXPlayer mini PRO (AMD 6800U)
- AOK ZOE A1 (AMD 6800U)

Signed-off-by: Joaquín Ignacio Aramendía 
Link: https://lore.kernel.org/r/20221125114901.11309-1-samsagax@gmail.com
Signed-off-by: Guenter Roeck

hwmon: add OneXPlayer mini AMD sensors driver

2022-12-05T00:45:02+00:00

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: Joaquín Ignacio Aramendía 
Link: https://lore.kernel.org/r/20221104140659.593608-1-samsagax@gmail.com
[groeck: Removed misleading comment about module_platform_driver()]
Signed-off-by: Guenter Roeck

docs: hwmon: (smpro-hwmon) Improve grammar and formatting

2022-12-05T00:45:02+00:00

Improve documentation grammar and formatting for the
Ampere(R)'s Altra(R) SMpro hwmon driver.

Thanks Bagas for the changes in the link below.

Link: https://lore.kernel.org/lkml/Y1aHiaZ1OpHZIzS9@google.com/T/#mfea2167b99384486a1b75d9304536015116c1821
Signed-off-by: Quan Nguyen 
Reviewed-by: Bagas Sanjaya 
Link: https://lore.kernel.org/r/20221102062103.3135417-1-quan@os.amperecomputing.com
Signed-off-by: Guenter Roeck

hwmon: (aquacomputer_d5next) Add support for temperature sensor offsets

2022-12-05T00:45:02+00:00

Add support for reading and writing temperature sensor offsets
on the Aquacomputer D5 Next, Farbwerk 360, Octo and Quadro,
for which the needed offsets are known. Implemented by
Leonard Anderweit [1].

[1] https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/pull/22

Originally-from: Leonard Anderweit 
Signed-off-by: Aleksa Savic 
Link: https://lore.kernel.org/r/20221024151039.7222-1-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck

docs: hwmon: (smpro-hwmon) Add documentation

2022-12-05T00:45:02+00:00

Add documentation for the Ampere(R)'s Altra(R) SMpro hwmon driver.

Signed-off-by: Thu Nguyen 
Signed-off-by: Quan Nguyen 
Link: https://lore.kernel.org/r/20220929094321.770125-3-quan@os.amperecomputing.com
Signed-off-by: Guenter Roeck

hwmon: (corsair-psu) Add USB id of the new HX1500i psu

2022-10-22T13:59:12+00:00

Also update the documentation accordingly.

Signed-off-by: Wilken Gottwalt 
Link: https://lore.kernel.org/r/Y0FghqQCHG/cX5Jz@monster.localdomain
Signed-off-by: Guenter Roeck

hwmon: (corsair-psu) add USB id of new revision of the HX1000i psu

2022-10-02T21:38:55+00:00

Also updates the documentation accordingly.

Signed-off-by: Wilken Gottwalt 
Link: https://lore.kernel.org/r/YznOUQ7Pijedu0NW@monster.localdomain
Signed-off-by: Guenter Roeck

hwmon: (pwm-fan) Switch regulator dynamically

2022-09-25T21:22:11+00:00

This adds the enable attribute which is used to select if zero PWM duty
means to switch off regulator and PWM or to keep them enabled but
at inactive PWM output level.
Depending on the select enable mode, turn off the regulator and PWM if
the PWM duty is zero, or keep them enabled.
This is especially important for fan using inverted PWM signal polarity.
Having regulator supplied and PWM disabled, some PWM controllers provide
the active, rather than inactive signal.

With this change the shutdown as well as suspend/resume paths require
modifcations as well.

Signed-off-by: Alexander Stein 
Link: https://lore.kernel.org/r/20220914153137.613982-6-alexander.stein@ew.tq-group.com
Signed-off-by: Guenter Roeck