Updated version of the ltc2990 driver which supports all measurement
modes (current, voltage, temperature) available in the chip.

If devicetree is used, the mode must be specified with the property
"lltc,meas-mode". The format and possible values of the property are
described in the binding.

If devicetree is not used, the mode of the chip will not be configured.
Unless the chip is configured by another source, only the internal
temperature and supply voltage will be measured.
Signed-off-by: NTom Levens <tom.levens@cern.ch>
Tested-By: mike.looijmans@topic.nl
[groeck: Fixed compiler warning]
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

The SMN (System Management Network) on Family 17h AMD CPUs is also accessed
from other drivers, specifically EDAC. Accessing it directly is racy.
On top of that, accessing the SMN through root bridge 00:00 is wrong on
multi-die CPUs and may result in reading the temperature from the wrong
die. Use available API functions to fix the problem.

For this to work, add dependency on AMD_NB. Also change the Raven Ridge
PCI device ID to point to Data Fabric Function 3, since this ID is used
by the API functions to find the CPU node.

Cc: stable@vger.kernel.org # v4.16+
Tested-by: NGabriel Craciunescu <nix.or.die@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

NCT6796D is mostly compatible to NCT6795D. It supports an additional
pwm control and fan speed channel.

While we are at it, update documentation for NCT6795D.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Create a driver to add support for SoC sensors exported by the System
Control Processor (SCP) via the System Control and Management Interface
(SCMI). The supported sensor types is one of voltage, temperature,
current, and power.

The sensor labels and values provided by the SCP are exported via the
hwmon sysfs interface.

Cc: linux-hwmon@vger.kernel.org
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>

'default n' is default, so there is no need to specify it explicitly.
Reviewed-by: NJean Delvare <jdelvare@suse.de>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Nuvoton W83773G is a hardware monitor IC providing one local
temperature and two remote temperature sensors.
Signed-off-by: NLei YU <mine260309@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

We have no users of platform data, we made platform data driver-local,
so cut all #ifdefs for the platform data case, and depend on the
Kconfig CONFIG_OF_GPIO symbol.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

MAX6621 is a PECI-to-I2C translator provides an efficient, low-cost
solution for PECI-to-SMBus/I2C protocol conversion. It allows reading the
temperature from the PECI-compliant host directly from up to four
PECI-enabled CPUs.
Signed-off-by: NVadim Pasternak <vadimp@mellanox.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Add the lantiq cpu temperature sensor support for xrx200.
Signed-off-by: NFlorian Eckert <fe@dev.tdt.de>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

With CONFIG_THERMAL=m, a built-in aspeed pwm tacho driver causes
a link error:

drivers/hwmon/aspeed-pwm-tacho.o: In function `aspeed_pwm_tacho_probe':
aspeed-pwm-tacho.c:(.text+0x7f0): undefined reference to `thermal_of_cooling_device_register'

This adds a dependency similar to what other hwmon drivers use,
ensuring that the aspeed driver cannot be built-in in this
case but has to be a module. With THERMAL=n, we still allow building it.

Fixes: 2d7a548a ("drivers: hwmon: Support for ASPEED PWM/Fan tach")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

The driver uses regmap and thus has to select it to avoid build
errors such as the following.

drivers/hwmon/aspeed-pwm-tacho.c:337:21: error: variable
	'aspeed_pwm_tacho_regmap_config' has initializer but incomplete type
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Acked-by: NJoel Stanley <joel@jms.id.au>
Fixes: 2d7a548a ("drivers: hwmon: Support for ASPEED PWM/Fan tach")
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This driver is no longer needed:

 * It has no mainline users
 * It has no DT support and OMAP is DT only
 * iio-hwmon can be used for madc, which also works with DT
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

The ASPEED AST2400/2500 PWM controller supports 8 PWM output ports.
The ASPEED AST2400/2500 Fan tach controller supports 16 tachometer
inputs.
The device driver matches on the device tree node. The configuration
values are read from the device tree and written to the respective
registers.
The driver provides a sysfs entries through which the user can
configure the duty-cycle value (ranging from 0 to 100 percent) and read
the fan tach rpm value.
Signed-off-by: NJaghathiswari Rankappagounder Natarajan <jaghu@google.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This patch adds a HWMON driver for ST Microelectronics STTS751
temperature sensors.

Thanks-to: LABBE Corentin [for suggestions]
Thanks-to: Guenter Roeck [for suggestion and discussions]
Signed-off-by: NAndrea Merello <andrea.merello@gmail.com>
Cc: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Add support for the TI TMP108 temperature sensor with some device
configuration parameters.
Signed-off-by: NJohn Muir <john@jmuir.com>
[groeck: Initialize of_match_table]
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

The lm90 driver also supports the Texas Instruments TMP451 sensor chip.
Since the Kconfig description for the driver includes a list of all
compatible chips, mention the TI TMP451 there as well.
Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Add support for the tc654 and tc655 fan controllers from Microchip.

http://ww1.microchip.com/downloads/en/DeviceDoc/20001734C.pdfSigned-off-by: NChris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: NRob Herring <robh@kernel.org>
[groeck: Fixed continuation line alignments]
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This driver now uses regmap APIs, so it needs to select REGMAP_I2C.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Simplify code and reduce code size by using the new hwmon
registration API.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Simplify code and reduce code size by using the new hwmon
registration API.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This patch adds hardware temperature and power reading support for
APM X-Gene SoC using the mailbox communication interface.
Signed-off-by: NHoan Tran <hotran@apm.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This driver implements hardware monitoring and watchdog support
for the FTS BMC Chip "Teutates".
Signed-off-by: NThilo Cestonaro <thilo@cestona.ro>
[groeck: Updated subject and description; fixed dependencies]
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

By converting the driver to regmap, we can use regmap to cache non-volatile
registers. Stop caching the temperature register; while potentially reading
it more often can result in reading it more often than necessary, this is
offset by the gain due to not re-reading the limit registers.

A positive side effect of this change is that limit registers can now be
read and updated before the first temperature conversion is complete.
Acked-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Convert to use regmap. Leave caching to regmap and drop the register
update function. While this can result in additional read operations
if the temperature register is read continuously, it avoids re-reading
the limit registers and thus overall reduces complexity.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

MCP9808 is not officially compliant to JC-42, similar to MCP9804,
but its registers are compatible to JC-42.
Signed-off-by: NAlison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Add support for the the INA3221 26v capable, Triple channel,
Bi-Directional, Zero-Drift, Low-/High-Side, Current/Voltage Monitor
with I2C interface.
Signed-off-by: NAndrew F. Davis <afd@ti.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Signed-off-by: NAndrew F. Davis <afd@ti.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This driver implements support for the Sensirion SHT3x-DIS chip,
a humidity and temperature sensor. Temperature is measured
in degrees celsius, relative humidity is expressed as a percentage.
In the sysfs interface, all values are scaled by 1000,
i.e. the value for 31.5 degrees celsius is 31500.
Signed-off-by: NPascal Sachs <pascal.sachs@sensirion.com>
[groeck: Fixed 'Variable length array is used' gcc warning]
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

IT8628E is functionally identical to IT8620E.
Tested-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This patch adds CONFIG_CPU_SUP_AMD as the dependence of fam15h_power
driver. Because the following patch will use the interface from
x86/kernel/cpu/amd.c.

Otherwise, the below error might be encountered:

All errors (new ones prefixed by >>):

   drivers/built-in.o: In function `fam15h_power_probe':
>> fam15h_power.c:(.text+0x26e3a3): undefined reference to
>> `amd_get_cores_per_cu'
   fam15h_power.c:(.text+0x26e41e): undefined reference to
`amd_get_cores_per_cu'
Reported-by: Nbuild test robot <lkp@intel.com>
Acked-by: NBorislav Petkov <bp@suse.de>
Signed-off-by: NHuang Rui <ray.huang@amd.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Add basic support for the Maxim Integrated MAX31722/MAX31723 SPI
temperature sensors / thermostats.

Includes:
    - ACPI support;
    - raw temperature readings;
    - power management

Datasheet:
https://datasheets.maximintegrated.com/en/ds/MAX31722-MAX31723.pdfSigned-off-by: NTiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Create a driver to support the hardware monitoring chip present in
the Zyxel NSA320 and some of the other Zyxel NAS devices.

The driver reads fan speed and temperature from a suitably
pre-programmed MCU on the device.
Signed-off-by: NAdam Baker <linux@baker-net.org.uk>
[groeck: Dropped .owner field initialization]
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This patch adds support for the Murata NCP15XH103 thermistor series.
Signed-off-by: NJoseph McNally <jmcna06@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This adds support for the Linear Technology LTC2990  I2C System Monitor.
The LTC2990 supports a combination of voltage, current and temperature
monitoring. This driver currently only supports reading two currents
by measuring two differential voltages across series resistors, in
addition to the Vcc supply voltage and internal temperature.

This is sufficient to support the Topic Miami SOM which uses this chip
to monitor the currents flowing into the FPGA and the CPU parts.
Signed-off-by: NMike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

HTU21 is now supported by IIO, and can be instantiated as hwmon driver
using the iio-hwmon bridge. An explicit hwmon driver is no longer needed.

Cc: William Markezana <william.markezana@meas-spec.com>
Cc: Ludovic Tancerel <ludovic.tancerel@maplehightech.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: NJean Delvare <jdelvare@suse.de>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

If CONFIG_BITREVERSE is not built-in, the sht15 driver fails to link:

drivers/built-in.o: In function `sht15_crc8':
drivers/hwmon/sht15.c:195: undefined reference to `byte_rev_table'

This adds a Kconfig 'select' statement, like all other users of
bitrev.h have it.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Fixes: 33836ee9 ("hwmon:change sht15_reverse()")
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

The newly added scpi thermal support is broken when the scpi driver
is built-in but the thermal driver is a loadable module:

drivers/built-in.o: In function `scpi_hwmon_probe':
(.text+0x444d70): undefined reference to `thermal_zone_of_sensor_unregister'
(.text+0x444d94): undefined reference to `thermal_zone_of_sensor_register'
drivers/built-in.o: In function `scpi_hwmon_remove':
(text+0x444e6c): undefined reference to `thermal_zone_of_sensor_unregister'

This uses the same Kconfig trick that we have in a couple of other
drivers already to ensure we can only select the driver in valid
configurations when either THERMAL_OF is disabled, or when with a
dependency on CONFIG_THERMAL that can force SCPI to be a loadable
module in the case I was hitting.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Fixes: 68acc77a ("hwmon: Support thermal zones registration for SCP temperature sensors")
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Since a0de56c8 ("hwmon: (ina2xx) convert driver to using regmap")
the driver requires REGMAP_I2C to build.  Select it by default
in Kconfig.
Reported-by: NGuo Chunrong <B40290@freescale.com>
Cc: Marc Titinger <mtitinger@baylibre.com>
Signed-off-by: NLi Yang <leoli@freescale.com>
Fixes: a0de56c8 ("hwmon: (ina2xx) convert driver to using regmap")
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

The driver supports the Maxim MAX31790.
Signed-off-by: NIl Han <corone.il.han@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Create a driver to add support for SoC sensors exported by the System
Control Processor (SCP) via the System Control and Power Interface
(SCPI). The supported sensor types is one of voltage, temperature,
current, and power.

The sensor labels and values provided by the SCP are exported via the
hwmon sysfs interface.
Signed-off-by: NPunit Agrawal <punit.agrawal@arm.com>
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Cc: Sudeep Holla <sudeep.holla@arm.com>