linux-toradex.git/Documentation/hwmon, branch v6.18-rc4 Linux kernel for Apalis and Colibri modules hwmon: (cros_ec) register fans into thermal framework cooling devices 2025-09-25T15:08:14+00:00 Sung-Chi Li lschyi@chromium.org 2025-09-11T06:56:36+00:00 5798b62867b47b6ace287d31172ce748ad70d869 Register fans connected under EC as thermal cooling devices as well, so these fans can then work with the thermal framework. During the driver probing phase, we will also try to register each fan as a thermal cooling device based on previous probe result (whether the there are fans connected on that channel, and whether EC supports fan control). The basic get max state, get current state, and set current state methods are then implemented as well. Signed-off-by: Sung-Chi Li <lschyi@chromium.org> Acked-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20250911-cros_ec_fan-v6-3-a1446cc098af@google.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Register fans connected under EC as thermal cooling devices as well, so
these fans can then work with the thermal framework.

During the driver probing phase, we will also try to register each fan
as a thermal cooling device based on previous probe result (whether the
there are fans connected on that channel, and whether EC supports fan
control). The basic get max state, get current state, and set current
state methods are then implemented as well.

Signed-off-by: Sung-Chi Li <lschyi@chromium.org>
Acked-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20250911-cros_ec_fan-v6-3-a1446cc098af@google.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: (cros_ec) add PWM control over fans 2025-09-25T15:08:13+00:00 Sung-Chi Li lschyi@chromium.org 2025-09-11T06:56:35+00:00 fb8e659309f72e54ed011c6bfe98597b9236805d Newer EC firmware supports controlling fans through host commands, so adding corresponding implementations for controlling these fans in the driver for other kernel services and userspace to control them. The driver will first probe the supported host command versions (get and set of fan PWM values, get and set of fan control mode) to see if the connected EC fulfills the requirements of controlling the fan, then exposes corresponding sysfs nodes for userspace to control the fan with corresponding read and write implementations. As EC will automatically change the fan mode to auto when the device is suspended, the power management hooks are added as well to keep the fan control mode and fan PWM value consistent during suspend and resume. As we need to access the hwmon device in the power management hook, update the driver by storing the hwmon device in the driver data as well. Signed-off-by: Sung-Chi Li <lschyi@chromium.org> Acked-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20250911-cros_ec_fan-v6-2-a1446cc098af@google.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Newer EC firmware supports controlling fans through host commands, so
adding corresponding implementations for controlling these fans in the
driver for other kernel services and userspace to control them.

The driver will first probe the supported host command versions (get and
set of fan PWM values, get and set of fan control mode) to see if the
connected EC fulfills the requirements of controlling the fan, then
exposes corresponding sysfs nodes for userspace to control the fan with
corresponding read and write implementations.
As EC will automatically change the fan mode to auto when the device is
suspended, the power management hooks are added as well to keep the fan
control mode and fan PWM value consistent during suspend and resume. As
we need to access the hwmon device in the power management hook, update
the driver by storing the hwmon device in the driver data as well.

Signed-off-by: Sung-Chi Li <lschyi@chromium.org>
Acked-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20250911-cros_ec_fan-v6-2-a1446cc098af@google.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: add SMARC-sAM67 support 2025-09-25T15:08:13+00:00 Michael Walle mwalle@kernel.org 2025-09-12T12:07:44+00:00 443b39c82c322c9f3c38bea0389fe927ba00b3b4 Add a new driver for the Kontron SMARC-sAM67 board management controller. It has two voltage sensors and one temperature sensor. Signed-off-by: Michael Walle <mwalle@kernel.org> Link: https://lore.kernel.org/r/20250912120745.2295115-7-mwalle@kernel.org [groeck: Added sa67 to index.rst] Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Add a new driver for the Kontron SMARC-sAM67 board management
controller. It has two voltage sensors and one temperature sensor.

Signed-off-by: Michael Walle <mwalle@kernel.org>
Link: https://lore.kernel.org/r/20250912120745.2295115-7-mwalle@kernel.org
[groeck: Added sa67 to index.rst]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: (asus-ec-sensors) add TUF GAMING X670E PLUS WIFI 2025-09-25T15:08:13+00:00 Mohamad Kamal mohamad.kamal.85@gmail.com 2025-09-14T08:40:10+00:00 31c092baea5a1c5473d2183c2f2a36c76d083c59 Add support for TUF GAMING X670E PLUS WIFI Signed-off-by: Mohamad Kamal <mohamad.kamal.85@gmail.com> Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com> Link: https://lore.kernel.org/r/20250914084019.1108941-1-eugene.shalygin@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Add support for TUF GAMING X670E PLUS WIFI

Signed-off-by: Mohamad Kamal <mohamad.kamal.85@gmail.com>
Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Link: https://lore.kernel.org/r/20250914084019.1108941-1-eugene.shalygin@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: (dell-smm) Add support for automatic fan mode 2025-09-24T14:50:09+00:00 Armin Wolf W_Armin@gmx.de 2025-09-17T18:10:35+00:00 1c1658058c99bcfd3b2347e587a556986037f80a Many machines treat fan state 3 as some sort of automatic mode, which is superior to the separate SMM calls for switching to automatic fan mode for two reasons: - the fan control mode can be controlled for each fan separately - the current fan control mode can be retrieved from the BIOS On some machines however, this special fan state does not exist. Fan state 3 acts like a regular fan state on such machines or does not exist at all. Such machines usually use separate SMM calls for enabling/disabling automatic fan control. Add support for it. If the machine supports separate SMM calls for changing the fan control mode, then the other interface is ignored. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20250917181036.10972-4-W_Armin@gmx.de Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Many machines treat fan state 3 as some sort of automatic mode,
which is superior to the separate SMM calls for switching to
automatic fan mode for two reasons:

- the fan control mode can be controlled for each fan separately
- the current fan control mode can be retrieved from the BIOS

On some machines however, this special fan state does not exist.
Fan state 3 acts like a regular fan state on such machines or
does not exist at all. Such machines usually use separate SMM calls
for enabling/disabling automatic fan control.

Add support for it. If the machine supports separate SMM calls
for changing the fan control mode, then the other interface is
ignored.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20250917181036.10972-4-W_Armin@gmx.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: (asus-ec-sensors) add ROG STRIX X870E-E GAMING WIFI 2025-09-24T14:48:03+00:00 Ben Copeland ben.copeland@linaro.org 2025-09-23T19:26:55+00:00 2c8ac03aad7a8dd649de9080503c68319afb43f9 Add support for ROG STRIX X870E-E GAMING WIFI This board uses the same sensor configuration as the ProArt X870E-CREATOR WIFI motherboard. Signed-off-by: Ben Copeland <ben.copeland@linaro.org> Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com> Link: https://lore.kernel.org/r/20250923192935.11339-2-eugene.shalygin@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Add support for ROG STRIX X870E-E GAMING WIFI

This board uses the same sensor configuration as the
ProArt X870E-CREATOR WIFI motherboard.

Signed-off-by: Ben Copeland <ben.copeland@linaro.org>
Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Link: https://lore.kernel.org/r/20250923192935.11339-2-eugene.shalygin@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: (asus-ec-sensors) add ROG STRIX X670E-E GAMING WIFI 2025-09-24T14:43:30+00:00 Shane Fagan mail@shanefagan.com 2025-09-14T07:41:14+00:00 5d5ec7c81c372d33875e0176f9f6d68e3e813e32 Add support for ROG STRIX X670E-E GAMING WIFI Signed-off-by: Shane Fagan <mail@shanefagan.com> Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com> Link: https://lore.kernel.org/r/20250914074125.135656-1-eugene.shalygin@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Add support for ROG STRIX X670E-E GAMING WIFI

Signed-off-by: Shane Fagan <mail@shanefagan.com>
Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Link: https://lore.kernel.org/r/20250914074125.135656-1-eugene.shalygin@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: (pmbus/mp5990) add support for MP5998 2025-09-24T14:38:07+00:00 Cosmo Chou chou.cosmo@gmail.com 2025-09-16T09:50:26+00:00 bef3c793542b132ab1dc19076ce4f91594b5fbdc Add support for the MPS MP5998 hot-swap controller. Like MP5990, MP5998 uses EFUSE_CFG (0xC4) bit 9 to indicate linear/direct data format. Signed-off-by: Cosmo Chou <chou.cosmo@gmail.com> Link: https://lore.kernel.org/r/20250916095026.800164-2-chou.cosmo@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Add support for the MPS MP5998 hot-swap controller. Like MP5990, MP5998
uses EFUSE_CFG (0xC4) bit 9 to indicate linear/direct data format.

Signed-off-by: Cosmo Chou <chou.cosmo@gmail.com>
Link: https://lore.kernel.org/r/20250916095026.800164-2-chou.cosmo@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: document: add gpd-fan 2025-09-08T19:22:32+00:00 Cryolitia PukNgae cryolitia@uniontech.com 2025-09-08T02:25:45+00:00 69001f21ded78131b995af2900ef574b04a59ae2 Add GPD fan driver document Signed-off-by: Cryolitia PukNgae <cryolitia@uniontech.com> Link: https://lore.kernel.org/r/20250908-gpd_fan-v9-2-7b4506c03953@uniontech.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
Add GPD fan driver document

Signed-off-by: Cryolitia PukNgae <cryolitia@uniontech.com>
Link: https://lore.kernel.org/r/20250908-gpd_fan-v9-2-7b4506c03953@uniontech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
hwmon: (sht21) Add support for SHT20, SHT25 chips 2025-09-08T19:20:55+00:00 Kurt Borja kuurtb@gmail.com 2025-09-08T15:54:50+00:00 a0cce093689859238f923faa83a6735b7e8613c4 All sht2x chips share the same communication protocol so add support for them. Signed-off-by: Kurt Borja <kuurtb@gmail.com> Link: https://lore.kernel.org/r/20250908-sht2x-v4-2-bc15f68af7de@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> 
All sht2x chips share the same communication protocol so add support for
them.

Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Link: https://lore.kernel.org/r/20250908-sht2x-v4-2-bc15f68af7de@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>