kconfiglint reports:
X001: CONFIG_SENSORS_SBRMI referenced in Makefile but not defined
in any Kconfig
The SB-RMI hardware monitoring driver was originally introduced in
commit 5a0f50d110 ("hwmon: Add support for SB-RMI power module") with
both a Kconfig entry (CONFIG_SENSORS_SBRMI) and a Makefile line
(obj-$(CONFIG_SENSORS_SBRMI) += sbrmi.o) in drivers/hwmon/.
Commit e156586764 ("hwmon/misc: amd-sbi: Move core sbrmi from hwmon to
misc")
moved the driver to drivers/misc/amd-sbi/ to support additional
functionality beyond hardware monitoring. That commit correctly removed the
Kconfig entry from drivers/hwmon/Kconfig, moved the source file
drivers/hwmon/sbrmi.c to drivers/misc/amd-sbi/sbrmi.c, and created new
Kconfig/Makefile entries in drivers/misc/amd-sbi/ with a renamed symbol
(CONFIG_AMD_SBRMI_I2C).
However, the Makefile line in drivers/hwmon/Makefile was not removed in
that commit. The orphaned line references a CONFIG symbol that no longer
exists and a source file that is no longer present, so it has no effect
on the build — but it is dead code that should be cleaned up.
Remove the stale Makefile reference.
Assisted-by: Claude:claude-opus-4-6 kconfiglint
Signed-off-by: Sasha Levin <sashal@kernel.org>
Link: https://lore.kernel.org/r/20260426000319.55908-1-sashal@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This driver provides fan speed monitoring for Lenovo Yoga, Legion, and
IdeaPad laptops by interfacing with the Embedded Controller (EC) via ACPI.
To address low-resolution sampling in Lenovo EC firmware, a Rate-Limited
Lag (RLLag) filter is implemented. The filter ensures a consistent physical
curve regardless of userspace polling frequency.
Hardware identification is performed via DMI-based quirk tables, which
map specific ACPI object paths and register widths (8-bit vs 16-bit)
deterministically.
Signed-off-by: Sergio Melas <sergiomelas@gmail.com>
Link: https://lore.kernel.org/r/20260327221602.18832-1-sergiomelas@gmail.com
[groeck: Dropped double empty line in Kconfig]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add hardware monitoring support for the LattePanda Sigma SBC
(DFRobot, ITE IT8613E EC). The driver reads fan speed and
temperatures via direct port I/O, as the BIOS disables the
ACPI EC interface.
Signed-off-by: Mariano Abad <weimaraner@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The System Management Controller on Apple Silicon devices is responsible
for integrating and exposing the data reported by the vast array of
hardware monitoring sensors present on these devices. It is also
responsible for fan control, and allows users to manually set fan
speeds if they so desire. Add a hwmon driver to expose current,
power, temperature, and voltage monitoring sensors, as well as
fan speed monitoring and control via the SMC on Apple Silicon devices.
The SMC firmware has no consistency between devices, even when they
share an SoC. The FourCC keys used to access sensors are almost
random. An M1 Mac mini will have different FourCCs for its CPU core
temperature sensors to an M1 MacBook Pro, for example. For this
reason, the valid sensors for a given device are specified in a
child of the SMC Devicetree node. The driver uses this information
to determine which sensors to make available at runtime.
Reviewed-by: Neal Gompa <neal@gompa.dev>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Co-developed-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Link: https://lore.kernel.org/r/20251112-macsmc-subdevs-v5-6-728e4b91fe81@gmail.com
[groeck: Added Documentation to index]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add a driver for the ST Microelectronics TSC1641 16-bit high-precision
power monitor. The driver supports reading bus voltage, current, power,
and temperature. Sysfs attributes are exposed for shunt resistor and
update interval. The driver integrates with the hwmon subsystem and
supports optional ALERT pin polarity configuration.
Signed-off-by: Igor Reznichenko <igor@reznichenko.net>
Link: https://lore.kernel.org/r/20251105201406.1210856-3-igor@reznichenko.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Pull gpio updates from Bartosz Golaszewski:
"There are two new drivers and support for more models in existing
ones.
The generic GPIO API has been reworked and all users converted
which allowed us to move the fields specific to the generic GPIO
implementation out of the high-level struct gpio_chip into its own
structure that wraps the gpio_chip.
Other than that, there's nothing too exciting. Mostly minor tweaks and
fixes all over the place, some refactoring and some small new features
in helper modules.
GPIO core:
- add support for sparse pin ranges to the glue between GPIO and
pinctrl
- use a common prefix across all GPIO descriptor flags for improved
namespacing
New drivers:
- add new GPIO driver for the Nuvoton NCT6694
- add new GPIO driver for MAX7360
Driver improvements:
- add support for Tegra 256 to the gpio-tegra186 driver
- add support for Loongson-2K0300 to the gpio-loongson-64bit driver
- refactor the gpio-aggregator module to expose its GPIO forwarder
API to other in-kernel users (to enable merging of a new pinctrl
driver that uses it)
- convert all remaining drivers to using the modernized generic GPIO
chip API and remove the old interface
- stop displaying global GPIO numbers in debugfs output of controller
drivers
- extend the gpio-regmap helper with a new config option and improve
its support for GPIO interrupts
- remove redundant fast_io parameter from regmap configs in GPIO
drivers that already use MMIO regmaps which imply it
- add support for a new model in gpio-mmio: ixp4xx expansion bus
- order includes alphabetically in a few drivers for better
readability
- use generic device properties where applicable
- use devm_mutex_init() where applicable
- extend build coverage of drivers by enabling more to be compiled
with COMPILE_TEST enabled
- allow building gpio-stmpe as a module
- use dev_err_probe() where it makes sense in drivers
Late driver fixes:
- fix setting GPIO direction to output in gpio-mpfs
Documentation:
- document the usage of software nodes with GPIO chips
Device-tree bindings:
- Add DT bindings documents for new hardware: Tegra256, MAX7360
- Document a new model in Loongson bindings: LS2K0300
- Document a new model using the generic GPIO binding: IXP4xx
- Convert the DT binding for fsl,mxs-pinctrl to YAML
- fix the schema ID in the "trivial" GPIO schema
- describe GPIO hogs in the generic GPIO binding"
* tag 'gpio-updates-for-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (122 commits)
gpio: mpfs: fix setting gpio direction to output
gpio: generic: move GPIO_GENERIC_ flags to the correct header
gpio: generic: rename BGPIOF_ flags to GPIO_GENERIC_
gpio: nomadik: fix the debugfs helper stub
MAINTAINERS: Add entry on MAX7360 driver
input: misc: Add support for MAX7360 rotary
input: keyboard: Add support for MAX7360 keypad
gpio: max7360: Add MAX7360 gpio support
gpio: regmap: Allow to provide init_valid_mask callback
gpio: regmap: Allow to allocate regmap-irq device
pwm: max7360: Add MAX7360 PWM support
pinctrl: Add MAX7360 pinctrl driver
mfd: Add max7360 support
dt-bindings: mfd: gpio: Add MAX7360
rtc: Add Nuvoton NCT6694 RTC support
hwmon: Add Nuvoton NCT6694 HWMON support
watchdog: Add Nuvoton NCT6694 WDT support
can: Add Nuvoton NCT6694 CANFD support
i2c: Add Nuvoton NCT6694 I2C support
gpio: Add Nuvoton NCT6694 GPIO support
...
Pull hwmon updates from Guenter Roeck:
"New drivers:
- KEBA fan controller
- KEBA battery monitoring controller
- MAX77705
Support added to existing drivers:
- MAXIMUS VI HERO and ROG MAXIMUS Z90 Formula support (asus-ec-sensors)
- SQ52206 support (ina238)
- lt3074 support (pmbus/lt3074)
- ADPM12160 support (pmbus/max34440)
- MPM82504 and for MPM3695 family support (pmbus/mpq8785)
- Add the Dell OptiPlex 7050 to the DMI whitelist (dell-smm)
- Zen5 Ryzen Desktop support (k10temp)
Various other minor fixes and improvements"
* tag 'hwmon-for-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (48 commits)
doc: hwmon: acpi_power_meter: Add information about enabling the power capping feature.
hwmon: (isl28022) Fix current reading calculation
hwmon: (lm75) Fix I3C transfer buffer pointer for incoming data
hwmon: Add KEBA fan controller support
hwmon: pmbus: mpq8785: Add support for MPM3695 family
hwmon: pmbus: mpq8785: Add support for MPM82504
hwmon: pmbus: mpq8785: Implement VOUT feedback resistor divider ratio configuration
hwmon: pmbus: mpq8785: Prepare driver for multiple device support
dt-bindings: hwmon: Add bindings for mpq8785 driver
hwmon: (ina238) Modify the calculation formula to adapt to different chips
hwmon: (ina238) Add support for SQ52206
dt-bindings: Add SQ52206 to ina2xx devicetree bindings
hwmon: (ina238) Add ina238_config to save configurations for different chips
hwmon: (ausus-ec-sensors) add MAXIMUS VI HERO.
hwmon: (isl28022, nct7363) Convert to use maple tree register cache
hwmon: (asus-ec-sensors) check sensor index in read_string()
hwmon: (asus-ec-sensors) add ROG MAXIMUS Z90 Formula.
dt-bindings: hwmon: Add Sophgo SG2044 external hardware monitor support
hwmon: (max77705) Add initial support
hwmon: (tmp102) add vcc regulator support
...
The KEBA fan controller is found in the system FPGA of KEBA PLC devices.
It detects if the fan is removed or blocked. For fans with tacho signal
the monitoring of the speed of the fan is supported. It also supports to
regulate the speed of fans with PWM input.
The auxiliary device for this driver is instantiated by the cp500 misc
driver.
Signed-off-by: Gerhard Engleder <eg@keba.com>
Link: https://lore.kernel.org/r/20250425194823.54664-1-gerhard@engleder-embedded.com
[groeck: Added various missing "break;" statements]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The EC of OneXPlayer devices used to only control the fan. This is no
longer the case, with the EC of OneXPlayer gaining additional
functionality (turbo button, turbo led, battery controls).
As it will be beneficial from a complexity perspective to retain this
driver as a single unit, move it out of hwmon, and into platform/x86.
Also, remove the hwmon documentation to prepare moving it to
Documentation/ABI/.
While at it, add myself to the maintainer's file.
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Derek J. Clark <derekjohn.clark@gmail.com>
Signed-off-by: Antheas Kapenekakis <lkml@antheas.dev>
Link: https://lore.kernel.org/r/20250425111821.88746-4-lkml@antheas.dev
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
The KEBA battery monitoring controller is found in the system FPGA of
KEBA PLC devices. It puts a load on the coin cell battery to check the
state of the battery. If the coin cell battery is nearly empty, then
the user space is signaled with a hwmon alarm.
The auxiliary device for this driver is instantiated by the cp500 misc
driver.
Signed-off-by: Gerhard Engleder <eg@keba.com>
Link: https://lore.kernel.org/r/20250409190830.60489-1-gerhard@engleder-embedded.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add support for the Congatec Board Controller. This controller exposes
temperature, voltage, current and fan sensors.
The available sensors list cannot be predicted. Some sensors can be
present or not, depending the system.
The driver has an internal list of all possible sensors, for all Congatec
boards. The Board Controller gives to the driver its sensors list, and
their status (active or not).
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250203-congatec-board-controller-hwmon-v4-1-ff6c76a4662c@bootlin.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The NCT7363Y is a fan controller which provides up to 16
independent FAN input monitors. It can report each FAN input count
values. The NCT7363Y also provides up to 16 independent PWM
outputs. Each PWM can output specific PWM signal by manual mode to
control the FAN duty outside.
Signed-off-by: Ban Feng <kcfeng0@nuvoton.com>
Message-ID: <20241022052905.4062682-3-kcfeng0@nuvoton.com>
[groeck: Dropped unnecessary variable initialization, and , after { }]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
