linux.git/drivers/hwmon, branch v6.8-rc2

hwmon: (npcm750-pwm-fan) Fix crash observed when instantiating nuvoton,npcm750-pwm-fan

2024-01-14T15:44:38+00:00

Commit 89fec128d5d1 ("hwmon: (npcm750-pwm-fan) Add NPCM8xx support")
introduced support for PWM fans on Nuvoton's npcm845 SoC. This chip
supports three PWM modules with four PWM channels each. The older npcm750
only supported two PWM modules. The commit did not take into account that
the older SoC only supported two PWM modules. This results in a crash if
npcm750 is instantiated when the code attempts to instantiate the
non-existing third PWM module.

Unable to handle kernel paging request at virtual address e0aa2000 when write
[e0aa2000] *pgd=04ab6811, *pte=00000000, *ppte=00000000
Internal error: Oops: 807 [#1] SMP ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G                 N 6.7.0-next-20240112-dirty #3
Hardware name: NPCM7XX Chip family
PC is at npcm7xx_pwm_fan_probe+0x204/0x890
LR is at arm_heavy_mb+0x1c/0x38

Fix the problem by detecting the number of supported PWM modules in the
probe function and only instantiating the supported modules.

Fixes: 89fec128d5d1 ("hwmon: (npcm750-pwm-fan) Add NPCM8xx support")
Cc: Tomer Maimon 
Signed-off-by: Guenter Roeck

Merge tag 'pwm/for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

2024-01-12T22:59:50+00:00

Pull pwm updates from Thierry Reding:
 "This contains a bunch of cleanups and simplifications across the
  board, as well as a number of small fixes.

  Perhaps the most notable change here is the addition of an API that
  allows PWMs to be used in atomic contexts, which is useful when time-
  critical operations are involved, such as using a PWM to generate IR
  signals.

  Finally, I have decided to step down as PWM subsystem maintainer. Due
  to other responsibilities I have lately not been able to find the time
  that the subsystem deserves and Uwe, who has been helping out a lot
  for the past few years and has many things planned for the future, has
  kindly volunteered to take over. I have no doubt that he will be a
  suitable replacement"

* tag 'pwm/for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (44 commits)
  MAINTAINERS: pwm: Thierry steps down, Uwe takes over
  pwm: linux/pwm.h: fix Excess kernel-doc description warning
  pwm: Add pwm_apply_state() compatibility stub
  pwm: cros-ec: Drop documentation for dropped struct member
  pwm: Drop two unused API functions
  pwm: lpc18xx-sct: Don't modify the cached period of other PWM outputs
  pwm: meson: Simplify using dev_err_probe()
  pwm: stmpe: Silence duplicate error messages
  pwm: Reduce number of pointer dereferences in pwm_device_request()
  pwm: crc: Use consistent variable naming for driver data
  pwm: omap-dmtimer: Drop locking
  dt-bindings: pwm: ti,pwm-omap-dmtimer: Update binding for yaml
  media: pwm-ir-tx: Trigger edges from hrtimer interrupt context
  pwm: bcm2835: Allow PWM driver to be used in atomic context
  pwm: Make it possible to apply PWM changes in atomic context
  pwm: renesas: Remove unused include
  pwm: Replace ENOTSUPP with EOPNOTSUPP
  pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()
  pwm: Stop referencing pwm->chip
  pwm: Update kernel doc for struct pwm_chip
  ...

hwmon: (gigabyte_waterforce) Mark status report as received under a spinlock

2024-01-08T15:27:27+00:00

Through hidraw, userspace can cause a status report to be sent
from the device. The parsing in waterforce_raw_event() may happen in
parallel to a waterforce_get_status() call (which resets the completion
for tracking the report) if it's running on a different CPU where
bottom half interrupts are not disabled.

Add a spinlock around the complete_all() call in waterforce_raw_event()
to prevent race issues.

Fixes: d5939a793693 ("hwmon: Add driver for Gigabyte AORUS Waterforce AIO coolers")
Signed-off-by: Aleksa Savic 
Link: https://lore.kernel.org/r/20231219143620.22179-1-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck

hwmon: (lm75) Fix tmp112 default config

2024-01-08T15:26:34+00:00

Set tmp112 conversion rate to 8 HZ and 12-bit mode.

Fixes: 35cd18048542 ("hwmon: (lm75) Aproximate sample times to data-sheet values")
Signed-off-by: Abdel Alkuor 
Link: https://lore.kernel.org/r/20240106030254.384963-1-alkuor@gmail.com
Signed-off-by: Guenter Roeck

hwmon: (lm75) Add AMS AS6200 temperature sensor

2024-01-02T16:44:57+00:00

as6200 is a temperature sensor with 0.0625°C resolution and a
range between -40°C to 125°C.

By default, the driver configures as6200 as following:
- Converstion rate: 8 Hz
- Conversion mode: continuous
- Consecutive fault counts: 4 samples
- Alert state: high polarity
- Alert mode: comparator mode

Interrupt is supported for the alert pin.

Signed-off-by: Abdel Alkuor 
Link: https://lore.kernel.org/r/d1686678991bf8ee0d00cb08ca046798f37ca4b3.1703127334.git.alkuor@gmail.com
Signed-off-by: Guenter Roeck

hwmon: (lm75) remove now-unused include

2024-01-02T16:44:57+00:00

Including hwmon-sysfs.h is not needed since sysfs code got removed from
this file in commit 08b024338166 ("hwmon: (lm75) Convert to use new hwmon
registration API").

Signed-off-by: Luca Ceresoli 
Link: https://lore.kernel.org/r/20231228-hwmon-cleanup-include-v1-1-e36f65aee1f0@bootlin.com
Signed-off-by: Guenter Roeck

hwmon: (pmbus) Add support for MPS Multi-phase mp2856/mp2857 controller

2024-01-02T16:44:57+00:00

Add support for mp2856/mp2857 device from Monolithic Power Systems, Inc.
(MPS) vendor. This is a dual-loop, digital, multi-phase,
modulation controller.

Signed-off-by: Peter Yin 
Signed-off-by: Potin Lai 
Link: https://lore.kernel.org/r/20231211160519.21254-3-potin.lai.pt@gmail.com
[groeck: Fix checkpatch issues, use i2c_get_match_data()]
Signed-off-by: Guenter Roeck

hwmon: (aquacomputer_d5next) Remove unneeded CONFIG_DEBUG_FS #ifdef

2024-01-02T16:44:57+00:00

Remove the #ifdef check for CONFIG_DEBUG_FS and the empty variant
of aqc_debugfs_init(), because the debugfs functions already do nothing
if debugfs isn't enabled.

Signed-off-by: Aleksa Savic 
Link: https://lore.kernel.org/r/20231216140754.336775-1-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck

hwmon: (k10temp) Add support for AMD Family 19h Model 8h

2024-01-02T16:44:57+00:00

Add support for AMD Family 19h Model 8h CPUs, which appear to
be the Zen 3 based AMD Threadripper 5000WX series (Chagall).

The patch was tested with an AMD Threadripper 5955WX.

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218244
Tested-by: Jami Kurki 
Signed-off-by: Jami Kurki 
Co-developed-by: Armin Wolf 
Signed-off-by: Armin Wolf 
Link: https://lore.kernel.org/r/20231211210206.11060-1-W_Armin@gmx.de
Signed-off-by: Guenter Roeck

hwmon: Add driver for Gigabyte AORUS Waterforce AIO coolers

2024-01-02T16:44:57+00:00

This driver exposes hardware sensors of the Gigabyte AORUS Waterforce
all-in-one CPU liquid coolers, which communicate through a proprietary
USB HID protocol. Report offsets were initially discovered in [1] and
confirmed by me on a Waterforce X240 by observing the sent reports from
the official software.

Available sensors are pump and fan speed in RPM, as well as coolant
temperature. Also available through debugfs is the firmware version.

Attaching a fan is optional and allows it to be controlled from the
device. If it's not connected, the fan-related sensors will report
zeroes.

The addressable RGB LEDs and LCD screen are not supported in this
driver and should be controlled through userspace tools.

[1]: https://github.com/liquidctl/liquidctl/issues/167

Signed-off-by: Aleksa Savic 
Link: https://lore.kernel.org/r/20231207122402.107032-1-savicaleksa83@gmail.com
Signed-off-by: Guenter Roeck