linux.git/Documentation/hwmon, branch v4.15

pmbus: Add driver for Maxim MAX31785 Intelligent Fan Controller

2017-11-05T14:06:33+00:00

The Maxim MAX31785 is a PMBus device providing closed-loop, multi-channel
fan management with temperature and remote voltage sensing. It supports
various fan control features, including PWM frequency control, temperature
hysteresis, dual tachometer measurements, and fan health monitoring.

This patch presents a basic driver using only the existing features of the
PMBus subsystem.

Signed-off-by: Andrew Jeffery 
[groeck: Modified description to clarify that fan control is not yet provided]
Signed-off-by: Guenter Roeck

hwmon: (sht15) Root out platform data

2017-10-30T01:36:03+00:00

After finding out there are active users of this sensor I noticed:

- It has a single PXA27x board file using the platform data
- The platform data is only used to carry two GPIO pins, all other
  fields are unused
- The driver does not use GPIO descriptors but the legacy GPIO
  API

I saw we can swiftly fix this by:

- Killing off the platform data entirely
- Define a GPIO descriptor lookup table in the board file
- Use the standard devm_gpiod_get() to grab the GPIO descriptors
  from either the device tree or the board file table.

This compiles, but needs testing.

Cc: arm@kernel.org
Cc: Marco Franchi 
Cc: Davide Hug 
Cc: Jonathan Cameron 
Signed-off-by: Linus Walleij 
Acked-by: Arnd Bergmann 
Tested-by: Marco Franchi 
Acked-by: Arnd Bergmann 
Signed-off-by: Guenter Roeck

hwmon: (pmbus/lm25066) Add support for TI LM5066I

2017-08-30T13:31:13+00:00

The TI LM5066I hotswap controller is a more accurate version of the
LM5066 device already supported. It has different measurement conversion
coefficients than the LM5066, so it needs to be recognized as a
different device.

Signed-off-by: Xo Wang 
Signed-off-by: Guenter Roeck

Documentation: hwmon: Document the IBM CFF power supply

2017-08-30T01:07:13+00:00

Signed-off-by: Edward A. James 
Signed-off-by: Guenter Roeck

hwmon: (ftsteutates) Fix clearing alarm sysfs entries

2017-08-13T15:24:01+00:00

sysfs store functions should return the number of bytes written.
Returning zero results in an endless loop.

Fixes: 08426eda58e0 ("hwmon: Add driver for FTS BMC chip "Teutates"")
Signed-off-by: Thilo Cestonaro 
[groeck: Clean up documentation change and description]
Signed-off-by: Guenter Roeck

hwmon: (pmbus) move header file out of I2C realm

2017-06-12T00:08:19+00:00

include/linux/i2c is not for client devices. Move the header file to a
more appropriate location.

Signed-off-by: Wolfram Sang 
Signed-off-by: Guenter Roeck

hwmon: (ltc4245) move header file out of I2C realm

2017-06-12T00:08:19+00:00

include/linux/i2c is not for client devices. Move the header file to a
more appropriate location.

Signed-off-by: Wolfram Sang 
Signed-off-by: Guenter Roeck

hwmon: (ads1015) move header file out of I2C realm

2017-06-12T00:08:19+00:00

include/linux/i2c is not for client devices. Move the header file to a
more appropriate location.

Signed-off-by: Wolfram Sang 
Signed-off-by: Guenter Roeck

hwmon: (adt7475) temperature smoothing

2017-06-12T00:08:19+00:00

When enabled temperature smoothing allows ramping the fan speed over a
configurable period of time instead of jumping to the new speed
instantaneously.

Signed-off-by: Chris Packham 
Signed-off-by: Guenter Roeck

hwmon: (adt7475) fan stall prevention

2017-06-12T00:08:19+00:00

By default adt7475 will stop the fans (pwm duty cycle 0%) when the
temperature drops past Tmin - hysteresis. Some systems want to keep the
fans moving even when the temperature drops so add new sysfs attributes
that configure the enhanced acoustics min 1-3 which allows the fans to
run at the minimum configure pwm duty cycle.

Signed-off-by: Chris Packham 
Signed-off-by: Guenter Roeck